10-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-K

/X/ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2014

or

/ / TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from _______ to _______

Commission file number 1-14303

AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

(Exact name of registrant as specified in its charter)

DELAWARE	38-3161171
(State or other jurisdiction of	(I.R.S. Employer
incorporation or organization)	Identification No.)
ONE DAUCH DRIVE, DETROIT, MICHIGAN	48211-1198
(Address of principal executive offices)	(Zip Code)

313-758-2000

(Registrant's telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Title of Each Class	Name of Each Exchange on Which Registered
COMMON STOCK, PAR VALUE $0.01 PER SHARE	NEW YORK STOCK EXCHANGE
PREFERRED SHARE PURCHASE RIGHTS, PAR VALUE $0.01 PER SHARE	NEW YORK STOCK EXCHANGE

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes x No o

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Exchange Act. Yes o No x

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes x No o

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes x No o

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant's knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. x

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting company. See definition of “accelerated filer”, “large accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act).

Large accelerated filer x Accelerated filer o Non-accelerated filer o Smaller reporting company o

(Do not check if small reporting company)

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes o No x

The closing price of the Common Stock on June 30, 2014 as reported on the New York Stock Exchange was $18.89 per share and the aggregate market value of the registrant's Common Stock held by non-affiliates was approximately $1,426.1 million.

As of February 19, 2015, the number of shares of the registrant's Common Stock, $0.01 par value, outstanding was 75,761,739 shares.

Documents Incorporated by Reference

Portions of the registrant's Annual Report to Stockholders for the year ended December 31, 2014 and Proxy Statement for use in connection with its Annual Meeting of Stockholders to be held on April 30, 2015, to be filed with the Securities and Exchange Commission pursuant to Regulation 14A not later than 120 days after December 31, 2014, are incorporated by reference in Part I (Items 1, 1A, 1B, 2, 3 and 4), Part II (Items 5, 6, 7, 7A, 8, 9, 9A and 9B), Part III (Items 10, 11, 12, 13 and 14) and Part IV (Item 15) of this Report.

AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

TABLE OF CONTENTS - ANNUAL REPORT ON FORM 10-K

Year Ended December 31, 2014

			Page Number
Part I	Item 1	Business	1
	Item 1A	Risk Factors	12
	Item 1B	Unresolved Staff Comments	17
	Item 2	Properties	18
	Item 3	Legal Proceedings	19
	Item 4	Mine Safety Disclosures	19
Part II	Item 5	Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities	19
	Item 6	Selected Financial Data	20
	Item 7	Management's Discussion and Analysis of Financial Condition and Results of Operations	21
	Item 7A	Quantitative and Qualitative Disclosures About Market Risk	36
	Item 8	Financial Statements and Supplementary Data	37
	Item 9	Changes in and Disagreements with Accountants on Accounting and Financial Disclosure	80
	Item 9A	Controls and Procedures	80
	Item 9B	Other Information	81
Part III	Item 10	Directors, Executive Officers and Corporate Governance	82
	Item 11	Executive Compensation	82
	Item 12	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters	82
	Item 13	Certain Relationships and Related Transactions, and Director Independence	82
	Item 14	Principal Accounting Fees and Services	82
Part IV	Item 15	Exhibits and Financial Statement Schedules	83
Exhibit 12		Computation of Ratio of Earnings to Fixed Charges
Exhibit 21		Subsidiaries of the Registrant
Exhibit 23		Consent of Independent Registered Public Accounting Firm
Exhibit 31.1		Certification of Chief Executive Officer Pursuant to Rule 13a-14(a) of the Securities Exchange Act
Exhibit 31.2		Certification of Chief Financial Officer Pursuant to Rule 13a-14(a) of the Securities Exchange Act
Exhibit 32		Certifications of Chief Executive Officer and Chief Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
Exhibit 101.INS		XBRL Instance Document
Exhibit 101.SCH		XBRL Taxonomy Extension Schema Document
Exhibit 101.PRE		XBRL Extension Presentation Linkbase Document
Exhibit 101.LAB		XBRL Taxonomy Extension Label Linkbase Document
Exhibit 101.CAL		XBRL Taxonomy Extension Calculation Linkbase Document
Exhibit 101.DEF		XBRL Taxonomy Extension Definition Linkbase Document

Part I

Item 1. Business

As used in this report, except as otherwise indicated in information incorporated by reference, references to “our Company,” "we," "our," "us" or “AAM” mean American Axle & Manufacturing Holdings, Inc. (Holdings) and its subsidiaries and predecessors, collectively.

(a) General Development of Business

Holdings, a Delaware corporation, is a successor to American Axle & Manufacturing of Michigan, Inc., a Michigan corporation, pursuant to a migratory merger between these entities in 1999.

(b) Financial Information About Segments

See Item 8, “Financial Statements and Supplementary Data - Note 11 - Segment and Geographic Information” included in this report.

(c) Narrative Description of Business

Company Overview

We are a Tier I supplier to the automotive industry. We manufacture, engineer, design and validate driveline and drivetrain systems and related components and chassis modules for light trucks, sport utility vehicles (SUVs), passenger cars, crossover vehicles and commercial vehicles. Driveline and drivetrain systems include components that transfer power from the transmission and deliver it to the drive wheels. Our driveline, drivetrain and related products include axles, driveheads, chassis modules, driveshafts, power transfer units, transfer cases, chassis and steering components, transmission parts, electric drive systems and metal-formed products. In addition to locations in the United States (U.S.) (Michigan, Ohio, Indiana and Pennsylvania), we also have offices or facilities in Brazil, China, Germany, India, Japan, Luxembourg, Mexico, Poland, Scotland, South Korea, Sweden and Thailand.

We are the principal supplier of driveline components to General Motors Company (GM) for its full-size rear-wheel drive (RWD) light trucks and SUVs manufactured in North America, supplying substantially all of GM's rear axle and four-wheel drive and all-wheel drive (4WD/AWD) axle requirements for these vehicle platforms. Sales to GM were approximately 68% of our consolidated net sales in 2014, 71% in 2013, and 73% in 2012.

We are the sole-source supplier to GM for certain axles and other driveline products for the life of each GM vehicle program covered by Lifetime Program Contracts and Long Term Program Contracts (collectively, LPCs). Substantially all of our sales to GM are made pursuant to the LPCs. The LPCs have terms equal to the lives of the relevant vehicle programs or their respective derivatives, which typically run 5 to 7 years, and require us to remain competitive with respect to technology, design and quality.

We also supply driveline system products to FCA US LLC, formerly known as Chrysler Group LLC (Chrysler), for heavy-duty Ram full-size pickup trucks and its derivatives, as well as the AWD Jeep Cherokee and the AWD Chrysler 200. Sales to Chrysler were approximately 18% of our consolidated net sales in 2014, 12% in 2013 and 10% in 2012. In addition to GM and Chrysler, we supply driveline systems and other related components to Volkswagen AG (Volkswagen), Audi AG (Audi), Mack Trucks Inc. (Mack Truck), Harley-Davidson Inc., Nissan Motor Co., Ltd. (Nissan), PACCAR Inc., Honda Motor Co., Ltd., Jaguar Land Rover Limited (JLR), Daimler Truck, Deere & Company, Ford Motor Company (Ford) and other original equipment manufacturers (OEMs) and Tier I supplier companies such as Jatco Ltd. and Hino Motors Ltd. Our consolidated net sales to customers other than GM increased 29% to $1,199.9 million in 2014 as compared to $926.7 million in 2013 and $792.6 million in 2012.

We estimate our principal served market to be approximately $36 billion based on information available at the end of 2014. Our principal served market is the driveline market, which consists of driveline, drivetrain and related components and chassis modules for light trucks, SUVs, passenger cars, crossover vehicles and commercial vehicles, in the regions in which we compete.

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The following chart sets forth the percentage of total revenues attributable to our products for the periods indicated:

	Year ended December 31,
	2014		2013		2012
Axles and driveshafts	82	%	82	%	82	%
Drivetrain components, forged products and other	18	%	18	%	18	%
Total	100	%	100	%	100	%

Business Strategy

We are focused on profitable net sales growth and strengthening our balance sheet by capitalizing on our competitive strengths and continuing to diversify our customer, product and geographic sales mix while providing exceptional value to our customers. Over the past several years, we have taken necessary actions that allowed us to make significant, sustainable structural cost reductions which have enabled us to be market cost competitive on a global basis.

We have aligned our business strategy to build value for our key stakeholders. This strategy emphasizes a commitment to deliver industry leading quality, technology leadership and operational excellence. By focusing on this commitment, we can achieve our key critical business objectives of product and customer diversification, globalization and solid financial performance. This strategy includes the following actions:

Maintain our high quality standards which are the foundation of our product durability and reliability.

• AAM has an outstanding daily track record for delivering quality products, having averaged less than 10 discrepant parts per million (PPM) since 2003, as measured by our largest customer.

• Our quality performance has resulted in improved warranty performance for our customers. As a result, the cost per vehicle has improved an average of approximately 10% annually since 2006, as measured by our largest customer.

• During 2014, our Colfor Minerva Facility in Ohio, Dietronik location in Michigan and Changshu Manufacturing Facility in China were recognized with the GM Supplier Quality Excellence Award for outstanding performance.

Achieve technology leadership by delivering innovative driveline products which improve the diversification of our product portfolio while increasing our total global served market.

• AAM's significant investment in research and development (R&D) has resulted in the development of advanced technology products designed to assist our customers in meeting the market demands for improved fuel-efficiency; lower emissions; enhanced power density; advanced, sophisticated electronic controls; improved safety, ride and handling performance; and enhanced reliability and durability for light trucks, SUVs, passenger cars, crossover vehicles and commercial vehicles.

• AAM has established a high efficiency product portfolio that is designed to improve axle efficiency and fuel economy through innovative product design technologies. As our customers look to reduce weight through the use of aluminum and other conventional means, AAM is well positioned to offer innovative, industry leading solutions for lightweighting. Our portfolio includes high efficiency axles, aluminum axles and also AWD applications for plug-in hybrid electrical vehicles to full-electric vehicles.

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• AAM's EcoTrac^® Disconnecting AWD system is a fuel-efficient and environmentally friendly driveline system that provides OEMs the option of an all-wheel-drive system that disconnects when not needed to improve fuel efficiency and reduce CO₂ emissions compared to conventional AWD systems. AAM's EcoTrac^® Disconnecting AWD system is featured on the AWD Jeep Cherokee, which was named by Motor Week as its 2014 Best Small Utility Vehicle, and the AWD Chrysler 200. We are currently designing the next generation of our EcoTrac^® Disconnecting AWD system which is smaller, lighter in weight and aims to recover up to 90% of fuel penalty, compared to 80% currently.

• e-AAM Driveline Systems AB (e-AAM) was created to design and commercialize electric and hybrid driveline systems designed to improve fuel efficiency, reduce CO₂ emissions and provide AWD capability. We will continue engineering, developing and commercializing electric and hybrid driveline systems for passenger cars and crossover vehicles. In 2013, we secured a new driveline systems contract featuring patented e-AAM^TM hybrid & electric driveline systems technology with Qoros Auto Co., Ltd. in China.

• AAM continues to invest in R&D in emerging technology such as torque biasing capability. AAM has developed capabilities in the areas of control systems and mechatronics to further integrate electronic components such as motors, actuators, and sensors into AAM's mechanical technology to enhance vehicle performance and provide superior torque management.

• To accelerate AAM's technological advancements, we announced in 2014 our plan to construct an Advanced Technology Development Center (ATDC) at our Detroit Campus. With a $15 to $20 million investment and the estimated creation of 75 to 100 jobs, we plan to open the state-of-the-art center for technology benchmarking, prototype development, advanced technology development, supplier collaboration, customer showcasing and associate training on our future products, processes, and systems by mid-2015.

Sustain our operational excellence and focus on cost management to deliver exceptional value to our customers.

• Our top priority for 2014 has been to flawlessly launch 16 critical programs for our customers. These launches included GM's next generation Heavy Duty pickups and SUVs (K2XX Program).

• Our focus on cost management has led to sustainable structural reductions in AAM's fixed cost structure. We continue to focus on cost management through the implementation of the AAM Manufacturing System to improve quality, eliminate waste, and reduce lead time and total costs globally.

• Our stand alone United Automobile, Aerospace and Agricultural Implement Workers of America (UAW) agreement, that covers hourly associates at our Three Rivers Manufacturing Facility, ensures market competitiveness at AAM's largest U.S. facility into 2017. The collective bargaining agreements that cover our hourly associates at our MSP Industries Corporation and Colfor Manufacturing Inc. subsidiaries expire in 2017 and 2018, respectively.

• With the closure of our Detroit Manufacturing Complex (DMC) and Cheektowaga Manufacturing Facility (CKMF) in 2012, we have achieved market competitive labor cost structures at each of our global locations.

Diversify our business through the growth of new and existing customer relationships and expansion of our product portfolio.

• In addition to maintaining and building upon our longstanding relationships with GM and Chrysler, we have focused on generating profitable growth with new and existing global OEM customers. New business launches in 2014 and 2015 include business with key international customers such as Ford, Honda, Jaguar Land Rover, Nissan, Mercedes-Benz and others.

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• We have accelerated the development and launch of products for passenger cars and crossover vehicles and the global light truck and commercial vehicle markets. We have approximately $825 million of new and incremental business backlog launching from 2015 to 2017, of which approximately 80% relates to AWD and RWD applications for passenger cars, crossover vehicles and driveline applications for the commercial vehicle market.

• Approximately 70% of our new and incremental business backlog launching from 2015 to 2017 is for customers other than GM. In addition, we have over $1 billion in quoted and emerging new business opportunities. These opportunities would allow us to continue the diversification and expansion of our customer base, product portfolio and global footprint. Substantially all of these opportunities are for customers other than GM.

• We also continue to evaluate and consider strategic growth investments to accelerate the profitable growth and diversification of our business.

Achieve globalization by increasing our presence in global markets to support our customers' platforms.

• As our customers continue to design their products for global markets, they will continue to require global support from their suppliers. For this reason, it is critical that we maintain a global presence in these markets in order to remain competitive for new contracts. Over the past few years, we have significantly increased our installed capacity in cost competitive global markets to support current programs and future opportunities. Specific actions included expanding capacity in Brazil, China, Mexico, Poland, Thailand and the U.S. and new facilities in Mexico and the U.S.

• Our joint venture (JV) with Hefei Automobile Axle Co., Ltd. (HAAC), a subsidiary of the JAC Group (Anhui Jianghuai Automotive Group Co., Ltd.), which includes 100% of HAAC's light commercial axle business, continues to be a strong advantage for building relationships with leading Chinese light truck manufacturers. We supply front and rear beam axles to several leading Chinese light truck manufacturers, including JAC and BAIC Foton, making AAM the second largest axle supplier in China's light commercial truck segment.

• Approximately 60% of our $825 million of new and incremental business backlog launching from 2015 to 2017 is for end use markets outside the U.S. and approximately 85% has been sourced to our manufacturing facilities outside the U.S.

Achieve solid financial performance to build value for our key stakeholders.

• Over the past five years, AAM's compound annual growth rate (CAGR) for sales has exceeded the growth rate of the industry. We expect AAM's new and incremental business backlog will continue to drive our sales to grow at a rate that is higher than the industry through 2017, based on current industry estimates.

• We have established a cost competitive, operationally flexible global manufacturing, engineering and sourcing footprint to increase our presence in global growth markets, support global product development initiatives and establish regional cost competitiveness. This includes having manufacturing and engineering facilities in Brazil, China, Germany, India, Mexico, Poland, Sweden, Thailand and the U.S.

• In 2013, we successfully closed on over $1.25 billion in new and amended financing agreements. As a result, we reduced our weighted average interest cost, extended our debt maturities and improved debt covenant terms and conditions. By taking advantage of favorable market conditions, we improved our flexibility to manage and grow our business and to support AAM's long-term strategic objectives. As of December 31, 2014, we had over $800 million in available liquidity and no significant debt maturities until 2018.

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Competition and Strengths

We compete with a variety of independent suppliers and distributors, as well as with the in-house operations of certain OEMs. Our principal competitors include Dana Holding Corporation, GKN plc, Magna International Inc., ZF Friedrichshafen AG, Linamar Corporation, Meritor Inc. and the in-house operations of various global OEMs. The sector is also attracting new competitors, some of whom are entering our product segment through the acquisition of non-core OEM operations.

With a focus on engineering and manufacturing, we support our business strategy and differentiate ourselves through outstanding long-term daily track records on quality, warranty, reliability, delivery and launch performance. We reduced our discrepant PPM performance, as measured by our largest customer, from 13,441 PPM in 1994 to an average of less than 10 PPM for each of the last 10 years.

As global OEM’s race to meet tighter fuel efficiency emissions standards, the automotive industry is entering a new, more advanced phase of innovation and design. This encompasses independent drive vehicles, hybrid and electric vehicles, advanced powertrain applications and other equally sophisticated technologies. AAM is meeting these challenges with an aggressive plan to increase our investment in advanced product, process and systems technology.

All of our global facilities utilize the AAM Manufacturing System, a business philosophy focused on lean manufacturing designed to facilitate cost reductions, improve quality, reduce inventory and improve our operating flexibility. This philosophy is demonstrated through the following:

• In the past, our largest two facilities, Guanajuato Manufacturing Complex and Three Rivers Manufacturing Facility, were recognized for outstanding performance as a "Shingo Prize" recipient and by being named by IndustryWeek Magazine as one of the 10 best plants in North America, respectively.

Industry Trends

See Item 7, “Management's Discussion and Analysis - Industry Trends.”

Productive Materials

We believe that we have adequate sources of supply of productive materials and components for our manufacturing needs.  Most raw materials (such as steel) and semi-processed or finished items (such as castings) are available within the geographical regions of our operating facilities from qualified sources in quantities sufficient for our needs.  We currently have contracts with our steel suppliers that ensure continuity of supply to our principal operating facilities in North America.  We also have validation and testing capabilities that enable us to strategically qualify steel sources on a global basis. As we continue to expand our global manufacturing footprint, we will rely on suppliers in local markets that have not yet proven their ability to meet our requirements. 

Research and Development (R&D)

We continue to invest in the development of new products, processes and systems to improve efficiency and flexibility in our operations and continue to deliver innovative new products, chassis modules and integrated driveline systems to our customers.

In 2014, R&D spending, net of customer engineering, design and development recoveries, was $103.9 million as compared to $103.4 million in 2013 and $123.4 million in 2012. The focus of this investment continues to be developing innovative driveline and drivetrain systems and related components for light trucks, passenger cars, SUVs, crossover vehicles and commercial vehicles in the global marketplace. Product development in this area includes power transfer units, transfer cases, driveline and transmission differentials, multi-piece driveshafts, constant velocity joints, torque transfer devices, chassis modules and front and rear drive axles. We continue to focus on electronic integration in our existing and future products to advance their performance. We also continue to support the development of hybrid and electric vehicle systems. Special emphasis is also placed on the development of products and systems that provide our customers with advancements in fuel efficiency and emissions reduction and improved performance metrics such as noise vibration harshness (NVH) and power

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density. Our efforts in these areas have resulted in the development of prototypes and various configurations of these driveline systems for several OEMs throughout the world.

We have also developed and commercialized a disconnecting AWD system, which strengthens AAM's position as a leader in global driveline systems technology. AAM's EcoTrac^® Disconnecting AWD system is an industry-first technology that seamlessly engages AWD functionality while improving fuel efficiency and reducing CO₂ emissions. This system is now featured on the award-winning Jeep Cherokee and the Chrysler 200.

AAM also develops and manufactures high-efficiency axle systems through the use of proprietary technologies to optimize product design and lubrication management, while also significantly reducing friction and improving fuel economy. In 2012, AAM launched a high efficiency axle on the Cadillac ATS compact luxury sport sedan and in 2014 we launched our high efficiency rear-drive modules on the Cadillac CTS, Motor Trend's 2014 Car of the Year.

Our e-AAM subsidiary engineers and develops electric and hybrid driveline systems to be commercialized for passenger cars and crossover vehicles. These systems are designed to improve fuel efficiency by up to 30%, reduce CO₂ emissions and provide AWD capability with the additional benefit of improved vehicle stability when compared to traditional mechanical AWD systems.

Through the development of our EcoTrac^® Disconnecting AWD system, our high efficiency axles and our e-AAM hybrid and electric driveline systems, we have significantly advanced our efforts to improve fuel efficiency and ride and handling performance while reducing emissions.

As our customers move toward ways to reduce vehicle weight through the use of aluminum or other conventional means, AAM is well positioned to offer innovative, industry leading solutions, through proprietary technologies such as PowerLite^® axles, PowerDense^® gears and PowerFilm^® lubricant for passenger car, light truck and AWD applications.

Backlog

We typically enter into agreements with our customers to provide axles or other driveline or drivetrain products for the life of our customers' vehicle programs. Our new and incremental business includes awarded programs and incremental content and volume including customer requested engineering changes. Our backlog may be impacted by various assumptions, many of which are provided by our customers based on their long range production plans. These assumptions include future production volume estimates, changes in program launch timing and fluctuation in foreign currency exchange rates.

Our new and incremental business backlog is approximately $825 million for programs launching from 2015 to 2017. Approximately 80% of our new and incremental business backlog relates to RWD and AWD applications for passenger cars, crossover vehicles and driveline applications for the commercial vehicle markets. Approximately 60% of our new and incremental business backlog will be for end use markets outside the U.S. and approximately 85% has been sourced to our non-U.S. manufacturing facilities. Approximately 70% of our new and incremental business backlog is for customers other than GM.  

Patents and Trademarks

We maintain and have pending various U.S. and foreign patents, trademarks and other rights to intellectual property relating to our business, which we believe are appropriate to protect our interest in existing products, new inventions, manufacturing processes and product developments. We do not believe that any single patent or trademark is material to our business nor would expiration or invalidity of any patent or trademark have a material adverse effect on our business or our ability to compete.

Cyclicality and Seasonality

Our operations are cyclical because they are directly related to worldwide automotive production, which is itself cyclical and dependent on general economic conditions and other factors. Our business is also moderately seasonal as our major OEM customers historically have an extended shutdown of operations (typically 1 to 2 weeks) in conjunction with their model year changeover and an approximate one-week shutdown in December. Accordingly, our quarterly results may reflect these trends.

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Environmental Matters

We are subject to various federal, state, local and foreign environmental and occupational safety and health laws, regulations and ordinances, including those regulating air emissions, water discharge, waste management and environmental cleanup. We closely monitor our environmental conditions to ensure that we are in compliance with applicable laws, regulations and ordinances. We have made, and will continue to make, capital and other expenditures to comply with environmental requirements, including recurring administrative costs. Such expenditures were not significant in 2014, 2013 and 2012.

Associates

We employ approximately 12,820 associates on a global basis, including our joint venture affiliates, of which approximately 3,810 are employed in the U.S. Approximately 2,300 associates are represented by the UAW. Approximately 1,570 of our hourly associates at our Three Rivers Manufacturing Facility in Michigan are subject to a stand alone UAW agreement that expires September 13, 2017. An additional 730 associates at our MSP Industries Corporation and Colfor Manufacturing, Inc. subsidiaries are represented by the UAW under collective bargaining agreements that expire April 18, 2017 and June 8, 2018, respectively. In addition, approximately 110 associates at our Albion Automotive subsidiary in Scotland, approximately 3,475 associates at our Guanajuato Manufacturing Complex in Mexico and approximately 570 associates at our Araucaria Manufacturing Facility in Brazil are represented by labor unions that are subject to collective bargaining agreements. The current collective bargaining agreement at Albion will expire on March 31, 2017. The collective bargaining agreements in Mexico and Brazil expire annually.

Executive Officers of the Registrant

Name	Age	Position
David C. Dauch .........................................	50	Chairman of the Board, President & Chief Executive Officer
Michael K. Simonte ...................................	51	Executive Vice President & Chief Financial Officer
Alberto L. Satine .......................................	58	Senior Vice President - Global Driveline Operations
Terry J. Woychowski..................................	59	Senior Vice President - Advanced Engineering & Quality
Mark S. Barrett ..........................................	54	Group Vice President - Program Management, Material Cost Optimization, Procurement and Driveshaft Business Unit
Steven J. Proctor ......................................	58	Group Vice President - Strategic & Business Development
Michael J. Bly ............................................	47	President - AAM Europe, Vice President - AAM Corporate
David A. Culton .........................................	49	Vice President - Material Cost Optimization
Nigel J. Francis ........................................	54	Vice President - Corporate Planning
Philip R. Guys ..........................................	52	Vice President - Product Engineering & Development
Donald L. Joseph......................................	59	President - AAM Asia, Vice President - AAM Corporate
Terri M. Kemp ...........................................	49	Vice President - Human Resources
Michael J. Lynch .......................................	51	Vice President - Finance & Controller
Allan R. Monich .........................................	61	Vice President - Quality, Warranty & Customer Satisfaction
Jon R. Morrison .........................................	56	President - AAM North America, Vice President - AAM Corporate
John S. Sofia ............................................	55	Vice President - Global Program Management
Thomas J. Szymanski ...............................	53	Vice President - Driveline Manufacturing Services
Norman Willemse .....................................	58	Vice President - Metal Formed Products Business Unit

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David C. Dauch, age 50, has been Chairman of the Board, President and Chief Executive Officer since September 2013 and has served on AAM's Board of Directors since April 2009. Prior to that, he served as President and Chief Executive Officer (since September 2012), President & Chief Operating Officer (since June 2008), Executive Vice President & Chief Operating Officer (since December 2007); Executive Vice President - Commercial & Strategic Development (since January 2005); Senior Vice President, Commercial (since May 2004); Senior Vice President, Sales, Marketing & Driveline Division (since September 2003); Vice President, Manufacturing - Driveline Division (since January 2001); Vice President, Sales and Marketing (since 1998) and Director of Sales, GM Full-Size Truck Programs (since May 1996). Mr. Dauch joined our Company in July 1995 as Manager, Sales Administration. Prior to joining our Company, Mr. Dauch held various positions and served on the Board of Directors at Collins & Aikman Products Company. Presently, he serves on the Boards of Directors of Business Leaders for Michigan, the Detroit Regional Chamber, the Great Lakes Council Boy Scouts of America, the Boys & Girls Clubs of Southeastern Michigan, the Original Equipment Suppliers Association and Amerisure Mutual Holdings, Inc. Mr. Dauch also serves on the Miami University Business Advisory Council.

Michael K. Simonte, age 51, has been Executive Vice President & Chief Financial Officer since December 2011. Simonte previously served as Executive Vice President - Finance & Chief Financial Officer (since February 2009), Group Vice President - Finance & Chief Financial Officer (since December 2007); Vice President - Finance & Chief Financial Officer (since January 2006); Vice President & Treasurer (since May 2004); and Treasurer (since September 2002). Simonte joined AAM in December 1998 as Director, Corporate Finance. Prior to joining our Company, Simonte served as Senior Manager at the Detroit office of Ernst & Young LLP. Simonte is a certified public accountant.

Alberto L. Satine, age 58, has been Senior Vice President - Global Driveline Operations since January 2014. Prior to that, he served as Group Vice President - Global Sales & Business Development (since December 2011), Vice President - Strategic & Business Development (since November 2005), Vice President - Procurement (since January 2005); Executive Director, Global Procurement Direct Materials (since January 2004); General Manager, Latin American Driveline Sales and Operations (since August 2003) and General Manager of International Operations (since joining our Company in May 2001). Prior to joining our Company, Mr. Satine held several management positions at Dana Corporation, including the position of President of Dana's Andean Operations in South America from 1997 to 2000 and General Manager of the Spicer Transmission Division in Toledo, Ohio from 1994 to 1997.

Terry J. Woychowski, age 59 , has been Senior Vice President - Advanced Engineering & Quality since February 2013. Prior to joining AAM, Mr. Woychowski spent more than 30 years with General Motors, where he held numerous senior management positions including Vice President, Global Quality & Vehicle Launches, Vice President, Global Vehicle Program Management and Global Chief Engineer Full-size Trucks & Executive Director.

Mark S. Barrett, age 54, has been Group Vice President - Program Management, Material Cost Optimization, Procurement and Driveshaft Business Unit since November 2014. Prior to that, he served as Group Vice President - Procurement, Program Management and Driveshaft Business Unit (since August 2013), Group Vice President - Procurement and Program Management (since February 2013), Group Vice President - Engineering & Procurement (since November 2012), Group Vice President - Engineering, Product Development & Procurement (since December 2011), Vice President - Engineering & Product Development (since October 2008), Executive Director, Engineering & Product Development (since January 2008); Executive Director, Axle & Drivetrain (since November 2006); Executive Director, Powertrain, Driveshaft and Halfshaft Engineering (since January 2006); Executive Director, Released and Domestic Programs (since January 2004); Director, Mid Size Axle Programs (since December 1998) and Staff Project Engineer (since joining our Company in March 1994).  Prior to joining our Company, Mr. Barrett served at General Motors for nine years in a variety of manufacturing and engineering positions.   

Steven J. Proctor, age 58, has been Group Vice President - Strategic & Business Development since December 2014. Prior to that, he served as Group Vice President - Global Sales and Business Development (since January 2014); President - AAM Europe, Vice President - AAM Corporate (since June 2012), President - AAM Asia, Vice President - AAM Corporate (since October 2008); Vice President - Sales & Marketing (since June 2004); Executive Director, Driveline Sales & Marketing (since September 2003); President and Chief Operating Officer of AAM do Brasil (since September 1999); Director, GMT-360, I-10/GMT-355 (since December 1998); Director, Worldwide Programs (since February 1998); Director, Strategic Planning (since July 1996) and Director, General Motors Programs (since joining our Company in March 1994). Prior to joining our Company, Mr. Proctor worked for

8

General Motors for 20 years in the areas of product and industrial engineering, production, material management and sales.

Michael J. Bly, age 47, has been President - AAM Europe, Vice President - AAM Corporate since joining our Company in January 2014. Prior to joining AAM, he spent more than 27 years with General Motors in a variety of management roles in the areas of powertrain, engineering and electrification. Mr. Bly's position prior to leaving General Motors was Vice President of European Powertrain Engineering.

David A. Culton, age 49, has been Vice President - Material Cost Optimization since January 2014. Prior to that, he served as President - AAM Americas, Vice President - AAM Corporate (since June 2012), President - AAM Europe, Vice President - AAM Corporate (since November 2010), Vice President - Commercial (since September 2009); Vice President - Unibody Vehicle Business Unit (since October 2008); Controller (since April 2007); Executive Director, Sales (since July 2006);  Director, Commercial Analysis (since August 2004); Director, Finance - Operations (Since June 2003); Finance Manager (since August 1999); and Assistant Finance Manager (since joining our Company in September 1998).  Prior to joining our Company, Mr. Culton served at Chrysler Corporation for 10 years in a variety of management, finance, engineering and manufacturing positions.

Nigel J. Francis, age 54, has been Vice President - Corporate Planning since joining our Company in November 2014. Prior to joining AAM, Mr. Francis has nearly 30 years of experience in the global automotive sector having held executive level positions at OEM and Tier I companies in North America and Europe including, Senior Vice President Automotive Office State of Michigan and Senior Adviser to the Governor of Michigan, Chief Engineering and Program Management - Tata Technologies, Chief Operating Officer and Chief Technology Officer - Trexa LLC, Executive Vice President - Bright Automotive; and Vice President of Vehicle Engineering - Mercedes-Benz Technology. Mr. Francis has spent the majority of his career in advanced design and engineering product development and in recent years has been closely involved with clean technology through hybrid and electric vehicle development and strategic planning in the global automotive sector.

Philip R. Guys, age 52, has been Vice President - Product Engineering & Development since November 2012. Prior to that, he served as Vice President - Product Engineering since joining AAM in December 2011. Prior to joining our Company, Mr. Guys served for four years at Linamar Corporation in various senior management positions, including Vice President - Engineering, and over 20 years in various engineering positions of increasing responsibility at Ford Motor Company and General Motors.

Donald L. Joseph, age 59, has been President - AAM Asia, Vice President - AAM Corporate since January 2015. Mr. Joseph joined AAM in 1994 as a Manufacturing Manager at AAM's Three Rivers Manufacturing Facility. Since then, he has served in various manufacturing and management positions with increasing responsibility throughout AAM's global operations, including his most recent position of Managing Director - AAM Asia. Mr. Joseph's professional career began with General Motors in 1977. While at General Motors, Mr. Joseph served in a variety of positions with increasing responsibility at the Hydra-matic and Saginaw Divisions. He also spent time at the NUMMI facility studying lean manufacturing.

Terri M. Kemp, age 49, has been Vice President - Human Resources since September 2012. Prior to that, she served as Executive Director - Human Resources & Labor Relations (since November 2010); Executive Director - Human Resources (since September 2009); Director - Human Resources Operations (since October 2008); Director - Program Management (since March 2008); Director - Program Management, Mexico (since August 2006); Launch Manager (since May 2006); Manager - Manufacturing (since August 2005); Manager - Manufacturing, Front Axles and Gears (since June 2005); Area Manager - Plant 1 (since October 2004); Director - Personnel, Detroit Gear & Axle (since January 2003); Area Manager - Plant 6 (since March 2002); Manager - Program Management (since February 2001); Area Manager - Manufacturing Plant 8 (since June 1999); Supervisor - I.E. Plants 1, 6 and 8 (since August 1998); Production Coordinator (since September 1997); and Manager - Productivity since joining the Company in July 1996. Prior to joining our Company, Mrs. Kemp served for nine years at Corning Incorporated, where she progressed through a series of manufacturing positions with increasing responsibility, including Industrial Engineer, Department Head and Operations Manager.

9

Michael J. Lynch, age 51, has been Vice President - Finance & Controller since September 2012. Prior to that, he served as Executive Director & Controller (since October 2008); Director - Commercial Analysis (since July 2006); Director - Finance, Driveline Americas (since March 2006); Director - Investment & Commercial Analysis (since November 2005); Director - Finance, Driveline (since October 2005); Director - Finance Operations, U.S. (since April 2005); Manager - Finance (since June 2003); Manager - Finance, Forge Division (since September 2001); Finance Manager - Albion Automotive (since October 1998); Supervisor - Cost Estimating (since February 1998) and Financial Analyst at the Detroit Manufacturing Facility since joining AAM in September 1996. Prior to joining our Company, Mr. Lynch served at Stellar Engineering for nine years in various capacities.

Allan R. Monich, age 61, has been Vice President - Quality, Warranty & Customer Satisfaction since November 2010. Prior to that, he served as Executive Director - Warranty (since January 2010); Vice President - Quality Assurance & Customer Satisfaction (since July 2006); Vice President - Program Management & Capital Planning (since October 2005); Vice President - Program Management & Launch (since May 2004); Vice President, Manufacturing Forging Division (since October 2001); Vice President, Human Resources (since 1998); Vice President, Personnel (since November 1997) and Plant Manager for the Buffalo Gear & Axle Plant in Buffalo, NY since the formation of our Company in March 1994.  Prior to joining our Company in March 1994, Mr. Monich worked for General Motors for 22 years in the areas of manufacturing, quality assurance, sales and engineering, including four years as a Plant Manager.

Jon R. Morrison, age 56 , has been President - AAM North America, Vice President - AAM Corporate since joining our Company in November 2014. Prior to joining AAM, Mr. Morrison has held executive level positions in the automotive industry including Vice President Vehicle Dynamics and Controls - WABCO Holdings Inc., President and General Manager - Meritor WABCO Vehicle Control Systems; General Manager, Plant Manager, Global Director of Sales and Engineering - Dana Corp., President - PBR Knoxville LLC (a joint venture between PBR International and Delphi Corp) and Vice President of Sales and Product Planning North America - PBR International. Morrison’s 30-year automotive and heavy vehicle career includes responsibilities in Finance, Manufacturing, Sales and Marketing, Engineering as well as managing global customer relationships.

John S. Sofia, age 55, has been Vice President - Global Program Management since November 2012. Prior to that, he served as Vice President - Commercial Vehicle Business (since March 2008); Vice President - Product Engineering, Commercial Vehicle Operations & Chief Technology Officer (since December 2007); Vice President - Engineering & Product Development (since July 2006); Vice President - Quality Assurance & Customer Satisfaction (since October 2004); Director, Advanced Quality Planning (since August 2002); Plant Manager, Detroit Forge (since April 2001); Director, Product Engineering (since June 2000); Manager of the Current Production & Process Engineering Group (since September 1997) and Engineering Manager (since joining our Company in May 1994). Prior to joining our Company, Mr. Sofia served at Chrysler Corporation for 10 years in a variety of manufacturing and engineering positions.

Thomas J. Szymanski, age 53, has been Vice President - Driveline Manufacturing Services since November 2014. Prior to that, he served as President - AAM North America, Vice President - AAM Corporate (since January 2014), Vice President - Operations - AAM Americas (since November 2012), Vice President - Global Manufacturing Services (since November 2010); Executive Director - Manufacturing Planning (since October 2008); Executive Director - Corporate Manufacturing Services Unibody Vehicles (since January 2008); Director - Cost Estimating & Advanced Manufacturing Engineering (since August 2006); President & Chief Operating Officer - Colfor Manufacturing, Inc. (since August 2004); Director - Corporate Manufacturing Engineering (since January 2003); Plant Manager - Three Rivers Gear & Axle (since March 2000); Plant Manager - Tonawanda Forge (since December 1998); Manufacturing Manager - Tonawanda Forge (since March 1994); and Area Manager, Axle Assembly - Buffalo Gear & Axle (since the formation of our Company in March 1994). Prior to joining our Company in March 1994, Mr. Szymanski worked for General Motors for 11 years in a variety of manufacturing and plant management positions.

Norman Willemse, age 58, has been Vice President - Metal Formed Product Business Unit since December 2011. Prior to that, he served as Vice President - Global Metal Formed Product Business Unit (since October 2008), Vice President - Global Metal Formed Product Operations (since December 2007); General Manager - Metal Formed Products Division (since July 2006) and Managing Director - Albion Automotive (since joining our Company in August 2001). Prior to joining our Company, Mr. Willemse served at ATSAS for seven years as Executive Director Engineering & Commercial and John Deere for over 17 years in various engineering positions of increasing responsibility. Mr. Willemse is a professional certified mechanical engineer.

10

Internet Website Access to Reports

The website for American Axle & Manufacturing Holdings, Inc. is www.aam.com. Our Annual Reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and amendments to those reports filed or furnished pursuant to section 13(a) or 15(d) of the Securities Exchange Act of 1934 are available free of charge through our website as soon as reasonably practicable after they are electronically filed with, or furnished to, the Securities and Exchange Commission (SEC). The SEC also maintains a website at www.sec.gov that contains reports, proxy and information statements, and other information regarding issuers that file electronically with the SEC. The information contained in the Company's website is not included, or incorporated by reference, in this Annual Report on Form 10-K.

(d) Financial Information About Geographic Areas

International operations are subject to certain additional risks inherent in conducting business outside the U.S., such as changes in currency exchange rates, price and currency exchange controls, import restrictions, nationalization, expropriation and other governmental action. Financial information relating to our operations by geographic area is presented in the following table. Net sales are attributed to countries based upon location of customer. Long-lived assets exclude deferred income taxes.

	December 31,
	2014		2013		2012
	(in millions)
Net sales
United States	$	2,073.6	$	1,682.0	$	1,576.6
Canada	64.6		74.4		75.0
Mexico	1,055.5		865.6		755.1
South America	156.5		201.1		216.4
Asia	238.6		255.2		214.5
Europe and other	107.2		129.0		93.3
Total net sales	$	3,696.0	$	3,207.3	$	2,930.9
Long-lived assets
United States	$	885.9	$	850.0	$	865.3
Mexico	513.2		469.3		417.7
South America	80.5		100.2		113.3
Asia	177.3		176.7		159.0
Europe	94.0		93.2		72.5
Total long-lived assets	$	1,750.9	$	1,689.4	$	1,627.8

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Item 1A. Risk Factors

The following risk factors and other information included in this Annual Report on Form 10-K should be considered. If any of the following risks occur, our business, financial condition, operating results and cash flows could be materially adversely affected.

Our business is significantly dependent on sales to GM and Chrysler.

We are the principal supplier of driveline components to GM for its full-size RWD light trucks and SUVs manufactured in North America, supplying substantially all of GM's rear axle and 4WD/AWD axle requirements for these vehicle platforms. Sales to GM were approximately 68% of our consolidated net sales in 2014, 71% in 2013, and 73% in 2012. A reduction in our sales to GM or a reduction by GM of its production of RWD light trucks or SUVs, as a result of market share losses of GM or otherwise, could have a material adverse effect on our results of operations and financial condition.

We also supply driveline system products for Chrysler's heavy-duty Ram full-size pickup trucks and its derivatives, as well as the AWD Jeep Cherokee and the AWD Chrysler 200. Sales to Chrysler accounted for approximately 18% of our consolidated net sales in 2014, 12% in 2013 and 10% in 2012. A reduction in our sales to Chrysler or a reduction by Chrysler of its production of the Ram program, as a result of market share losses of Chrysler or otherwise, could have a material adverse effect on our results of operations and financial condition.

Our business may also be adversely affected by reduced demand for the product programs we currently support, or if we do not obtain sales orders for successor programs that replace our current product programs.

Our business is dependent on the rear-wheel drive light truck and SUV market segments in North America.

A substantial portion of our revenue is derived from products supporting RWD light truck and SUV platforms in North America. Sales and production levels of light trucks and SUVs are being affected by many factors, including changes in consumer demand; product mix shifts favoring other types of light vehicles, such as front-wheel drive based crossover vehicles and passenger cars; fuel prices; and government regulation, such as the corporate average fuel economy (CAFE) regulations and related emissions standards promulgated by federal and state regulators. In 2012, the Obama Administration announced new CAFE standards for cars and light-duty trucks, raising the standard to the equivalent of 54.5 miles per gallon by 2025. Our customers are currently planning for these regulations and the potential impact on consumer preferences and demand for vehicles. A reduction in the market segment we currently supply could have a material adverse impact on our results of operations and financial condition.

We are under continuing pressure from our customers to reduce our prices.

Annual price reductions are a common practice in the automotive industry. The majority of our products are sold under long-term contracts with prices scheduled at the time the contracts are established. Many of our contracts require us to reduce our prices in subsequent years and most of our contracts allow us to adjust prices for engineering changes. If we must accommodate a customer's demand for higher annual price reductions and are unable to offset the impact of any such price reductions through continued technology improvements, cost reductions or other productivity initiatives, our results of operations and financial condition could be adversely affected.

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Our business faces substantial competition.

The automotive industry is highly competitive. Our competitors include the driveline component manufacturing facilities controlled by OEMs, as well as many other domestic and foreign companies possessing the capability to produce some or all of the products we supply. Some of our competitors are affiliated with OEMs and others have economic advantages as compared to our business, such as patents, existing underutilized capacity and lower wage and benefit costs. Technology, design, quality, delivery and cost are the primary elements of competition in our industry segment. As a result of these competitive pressures and other industry trends, OEMs and suppliers are developing strategies to reduce costs. These strategies include supply base consolidation and global sourcing. Our business may be adversely affected by increased competition from suppliers benefiting from OEM affiliate relationships or financial and other resources that we do not possess. Our business may also be adversely affected if we do not sustain our ability to meet customer requirements relative to technology, design, quality, delivery and cost.

Our business could be adversely affected by disruptions in our supply chain and our customers' supply chain.

We depend on a limited number of suppliers for certain key components and materials needed for our products. We rely upon, and expect to continue to rely upon, certain suppliers for critical components and materials that are not readily available in sufficient volume from other sources. As we continue to expand our global manufacturing footprint, we need to rely on suppliers in local markets that have not yet proven their ability to meet our requirements. These supply chain characteristics make us susceptible to supply shortages and price increases. In addition, over the past several years, many of our direct material suppliers have filed for bankruptcy protection and restructured their operations to significantly reduce their installed capacity. If production volumes increase rapidly, there can be no assurance that the suppliers of critical components and materials will be able or willing to meet our future needs on a timely basis. A significant disruption in the supply of these materials could have a material adverse effect on our results of operations and financial condition.

Natural disasters, such as the earthquake in Japan and floods in Thailand, affected the automotive industry's supply chain in 2011. Although our direct supply chain did not suffer material adverse effects from these natural disasters, future natural disasters could cause a disruption in the supply of critical components to us and our customers and have a material adverse effect on our results of operations and financial condition.

A failure of our information technology (IT) networks and systems, or the inability to successfully implement upgrades to our enterprise resource planning systems, could adversely impact our business and operations.

We rely upon information technology networks and systems to process, transmit and store electronic information, and to manage or support a variety of business processes or activities. Additionally, we and certain of our third-party vendors collect and store personal information in connection with human resources operations and other aspects of our business. The secure operation of these information technology networks and systems and the proper processing and maintenance of this information are critical to our business operations. Despite the implementation of security measures, our IT systems are at risk to damages from computer viruses, unauthorized access, cyber attack and other similar disruptions. The occurrence of any of these events could compromise our networks, and the information stored there could be accessed, publicly disclosed or lost. Any such access, disclosure or other loss of information could result in legal claims or proceedings, liability or regulatory penalties under laws protecting the privacy of personal information, the disruption of our operations or damage to our reputation. We may be required to incur significant costs to protect against damage caused by these disruptions or security breaches in the future.

Further, we are continually expanding and updating our networks and systems in response to the changing needs of our business. We are currently in the process of developing and testing global enterprise resource planning (ERP) systems to upgrade many of our existing operating and financial systems. We began implementing these ERP systems in the first quarter of 2015. Such an implementation is a major undertaking, both financially and from a management and personnel perspective. Should the systems not be implemented successfully, or if the systems do not perform in a satisfactory manner once implementation is complete, our business and operations could be disrupted and our results of operations could be adversely affected, including our ability to report accurate and timely financial results.

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General global economic conditions may have an adverse impact on our operating performance and results of operations.

The automotive industry has continued to improve over the past five years after suffering the effects of the global financial crisis experienced in 2008 and 2009. The U.S. Seasonally Adjusted Annual Rate of sales (SAAR) has returned to a more normalized rate of 16.4 million units in 2014 from 15.5 million in 2013 and 14.4 million in 2012, as the automotive industry has recovered from the effects of the unprecedented decline in consumer demand and production volumes. Deteriorating conditions in the U.S. or global economy that result in another reduction or depressed levels of automotive production and sales by our largest customers may adversely affect our business, financial condition and results of operations. Additionally, in a flat or declining economic environment, we may experience the negative effects of increased competitive pricing pressure and customer turnover.

Our company's global operations are subject to risks and uncertainties.

We have business and technical offices and manufacturing facilities in many foreign countries, including Brazil, China, India, Mexico, Poland, Scotland, Sweden and Thailand. Approximately 9,010 of our 12,820 associates are located outside of the U.S. International operations are subject to certain risks inherent in conducting business outside the U.S., such as changes in currency exchange rates, tax laws, price and currency exchange controls, import restrictions, nationalization, expropriation and other governmental action. Our global operations may also be adversely affected by political events and domestic or international terrorist events and hostilities. These uncertainties could have a material adverse effect on the continuity of our business and our results of operations and financial condition. As we continue to expand our business globally, our success will depend, in part, on our ability to anticipate and effectively manage these and other risks.

We may incur material losses and costs as a result of product recall or field action, product liability and warranty claims, litigation and other disputes and claims.

We are exposed to warranty, product recall or field action and product liability claims in the event that our products fail to perform as expected, and we may be required to participate in a recall of such products. Historically, we have experienced negligible warranty charges from our customers due to the quality, reliability and durability performance of our products. We are not responsible for certain warranty claims that may be incurred by our customers. This includes returned components for which no trouble was found upon inspection, discretionary acts of dealer goodwill, defects related to certain directed buy components, or build to print design issues. We review warranty claim activity in detail, and we may have disagreements with our customers as to responsibility for these types of costs incurred by our customer. In addition, as we continue to diversify our customer base, we have an increased obligation to share in the cost of providing warranties as part of our agreements with new customers. Costs and expenses associated with warranties, field actions, product recalls and product liability claims could have a material adverse impact on our results of operations and financial condition and may differ materially from the estimated liabilities that we have recorded in our consolidated financial statements.

In addition to warranty claims relating directly to products we produce, potential product recalls for our customers and their other suppliers, and the potential reputational harm that may result from such product recalls, could have a material adverse impact on our results of operations and financial condition.

We are also involved in various legal proceedings incidental to our business. Although we believe that none of these matters are likely to have a material adverse effect on our results of operations or financial condition, there can be no assurance as to the ultimate outcome of any such legal proceeding or any future legal proceedings.

14

Our business could be adversely affected if we fail to maintain satisfactory labor relations or if our customers fail to maintain satisfactory labor relations.

The majority of our hourly associates worldwide are members of industrial trade unions employed under the terms of collective bargaining agreements. Substantially all of our hourly associates in the U.S. are represented by the UAW. Approximately 4,045 of our hourly associates at our facilities in Mexico and Brazil are also covered by collective bargaining agreements which expire annually. There can be no assurance that future negotiations with our labor unions will be resolved favorably or that we will not experience a work stoppage or disruption that could have a material adverse impact on our results of operations and financial condition. In addition, there can be no assurance that such future negotiations will not result in labor cost increases or other terms and conditions that could adversely affect our results of operations and financial condition or our ability to compete for future business.

Further, the inability of our largest customers to maintain satisfactory labor relations with the UAW could also impact our operations. If our largest customers fail to successfully negotiate labor contracts on or before their expiration in 2015, potential work stoppages and disruptions in production schedules could result, which may have a material adverse impact to our results of operations and financial condition.

Our company or our customers may not be able to successfully and efficiently manage the timing and costs of new product program launches.

Certain of our customers are preparing to launch, or have recently launched, new product programs for which we will supply newly developed driveline system products and related components.  There can be no assurance that we will successfully complete the transition of our manufacturing facilities and resources to support these new product programs or other future product programs on a timely and cost efficient basis.  Accordingly, the launch of new product programs may adversely affect production rates or other operational efficiency and profitability measures at our facilities.  We may also experience difficulties with the performance of our supply chain on program launches, which could result in our inability to meet our contractual obligations to key customers. Production shortfalls or production delays, if any, could result in our failure to effectively manage our material and freight costs relating to these program launches. In addition, our customers may delay the launch or fail to successfully execute the launch of these new product programs, or any additional future product program for which we will supply products. Our revenues, operating results and financial condition could be adversely impacted if our customers fail to timely launch such programs or if we are unable to manage the timing requirements and costs of new product program launches.

Our company may not realize all of the revenue expected from our new and incremental business backlog.

The realization of incremental revenues from awarded business is inherently subject to a number of risks and uncertainties, including the accuracy of customer estimates relating to the number of vehicles to be produced in new and existing product programs and the timing of such production. It is also possible that our customers may delay or cancel a product program that has been awarded to us. Our revenues, operating results and financial condition could be adversely affected relative to our current financial plans if we do not realize substantially all the revenue from our new and incremental business backlog.

Negative or unexpected tax consequences could adversely affect our results of operations.

We file income tax returns in the U.S. federal jurisdiction, as well as various states and foreign jurisdictions. We are also subject to examinations of these income tax returns by the relevant tax authorities. As of December 31, 2014 and 2013, we have recorded a liability for unrecognized income tax benefits and related interest and penalties of $59.5 million and $25.8 million, respectively. Based on the status of these audits and the protocol of finalizing audits by the relevant tax authorities, it is not possible to estimate the impact of changes, if any, to previously recorded uncertain tax positions. Any negative or unexpected outcomes of these examinations and audits could have a material adverse impact on our results of operations and financial condition.

15

Our business could be adversely affected by volatility in the price of raw materials.

Worldwide commodity market conditions have resulted in volatility in the cost of steel and other metallic materials in recent years. As general economic conditions have improved and customer demand has increased, the cost of steel and metallic materials needed for our products has increased. If we are unable to pass cost increases on to our customers, this could have a material adverse effect on our results of operations and financial condition.

We may be unable to consummate and successfully integrate acquisitions and joint ventures.

As we continue to expand globally and accelerate our diversification efforts, we may pursue strategic growth initiatives with greater frequency going forward. Engaging in acquisitions and joint ventures involves potential risks, including failure to successfully integrate and realize the expected benefits of such acquisitions and joint ventures. Integrating acquired operations is a significant challenge and there is no assurance that we will be able to manage the integrations successfully. Failure to successfully integrate acquired operations or to realize the expected benefits of such acquisitions may have an adverse impact on our results of operations and financial condition.

Our company's ability to operate effectively could be impaired if we lose key personnel.

Our success depends, in part, on the efforts of our executive officers and other key associates, such as engineers and global operational leadership. In addition, our future success will depend on, among other factors, our ability to continue to attract and retain qualified personnel, particularly engineers and other employees with critical expertise and skills that support key customers and products. The loss of the services of our executive officers or other key associates, unexpected turnover, or the failure to attract or retain associates, could have a material adverse effect on our results of operations and financial condition.

We use important intellectual property in our business. If we are unable to protect our intellectual property or if a third party makes assertions against us or our customers relating to intellectual property rights, our business could be adversely affected.

We own important intellectual property, including patents, trademarks, copyrights and trade secrets, and are involved in numerous licensing arrangements. Our intellectual property plays an important role in maintaining our competitive position in a number of the markets that we serve. Our competitors may develop technologies that are similar to our proprietary technologies or design around the patents we own or license. Further, as we expand our operations in jurisdictions where the protection of intellectual property rights is less robust, the risk of others duplicating our proprietary technologies increases, despite efforts we undertake to protect them. Developments or assertions by or against us relating to intellectual property rights, and any inability to protect these rights, could materially adversely affect our business and our competitive position.

16

Our financial condition and operations may be adversely affected by a violation of financial and other covenants.

Our revolving credit facility contains financial covenants related to secured and unsecured indebtedness leverage and interest coverage.  The revolving credit facility limits our ability to make certain investments, loans and guarantees, declare dividends or distributions on capital stock, redeem or repurchase capital stock and certain debt obligations, incur liens, incur indebtedness, enter into certain restrictive agreements, merge, make acquisitions or sell all or substantially all of our assets.  The indenture governing our senior unsecured notes also restricts our ability to incur debt secured by liens, engage in consolidations or mergers or sell all or substantially all of our assets, and engage in certain sale and leaseback transactions. The revolving credit facility also significantly restricts our ability to incur additional secured debt.  The revolving credit facility and the indentures governing our senior unsecured notes also include customary events of default.  Obligations under the revolving credit facility, the 7.75% senior unsecured notes due 2019 (7.75% Notes), the 6.625% senior unsecured notes due 2022 (6.625% Notes), the 6.25% senior unsecured notes due 2021 (6.25% Notes) and our 5.125% senior unsecured notes due 2019 (5.125% Notes) are required to be guaranteed by most of our U.S. subsidiaries that hold domestic assets.  In addition, the revolving credit facility is secured on a first priority basis by all or substantially all of the assets of AAM, Inc., the assets of Holdings and each guarantor's assets, including a pledge of capital stock of our U.S. subsidiaries that hold domestic assets, including each guarantor, and a portion of the capital stock of the first tier foreign subsidiaries of AAM.  A violation of any of these covenants or agreements could result in a default under these contracts, which could permit the lenders or note holders to accelerate repayment of any borrowings or notes outstanding at that time and levy on the collateral granted in connection with these contracts.  A default or acceleration under the revolving credit facility or the indentures governing the senior unsecured notes may result in increased capital costs and defaults under our other debt agreements and may adversely affect our ability to operate our business, our subsidiaries' and guarantors' ability to operate their respective businesses and our results of operations and financial condition.

Our company faces substantial pension and other postretirement benefit obligations.

We have significant pension and other postretirement benefit obligations to certain of our associates and retirees. Our ability to satisfy the funding requirements associated with these obligations will depend on our cash flow from operations and our ability to access credit and the capital markets. The funding requirements of these benefit plans, and the related expense reflected in our financial statements, are affected by several factors that are subject to an inherent degree of uncertainty and volatility, including governmental regulation. Key assumptions used to value these benefit obligations and the cost of providing such benefits, funding requirements and expense recognition include the discount rate, the expected long-term rate of return on pension assets, mortality rates and the health care cost trend rate. If the actual trends in these factors are less favorable than our assumptions, this could have an adverse effect on our results of operations and financial condition.

Our business is subject to costs associated with environmental, health and safety regulations.

Our operations are subject to various federal, state, local and foreign laws and regulations governing, among other things, emissions to air, discharge to waters and the generation, handling, storage, transportation, treatment and disposal of waste and other materials. We believe that our operations and facilities have been and are being operated in compliance, in all material respects, with such laws and regulations, many of which provide for substantial fines and criminal sanctions for violations. The operation of our manufacturing facilities entails risks in these areas, however, and there can be no assurance that we will not incur material costs or liabilities. In addition, potentially significant expenditures could be required in order to comply with evolving environmental, health and safety laws, regulations or other pertinent requirements that may be adopted or imposed in the future by governmental authorities.

Item 1B. Unresolved Staff Comments

None.

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Item 2. Properties

We operate in 13 countries and have 37 manufacturing, engineering and business office facilities worldwide of which the principal facilities are:

Name	Type of Interest	Function
Three Rivers Manufacturing Facility Three Rivers, MI	Owned	Front and rear axles, rear drive modules, power transfer units, driveheads and steering linkages
Lancaster Manufacturing Facility        Lancaster, Pennsylvania	Leased	Assembly of axles and driveheads for commercial vehicles
Colfor Manufacturing, Inc. Malvern, OH Minerva, OH	Owned	Forged products Forged and machined products and rear axles
MSP Industries Oxford, MI	Leased	Forged and machined products
Oxford Forge Oxford, MI	Owned	Forged products
AccuGear, Inc.        Fort Wayne, IN	Owned	Forged and machined products
DieTronik        Auburn Hills, MI	Owned	Tool & die manufacturer and machined products
Guanajuato Manufacturing Complex Guanajuato, Mexico	Owned	Rear axles and driveshafts, front axles, front auxiliary driveshafts, forging products, rear drive modules, power transfer units and transfer cases
Silao Manufacturing Facility Silao, Mexico	Leased	Machined products
AccuGear - Silao        Silao, Mexico	Owned	Forged and machined products
Araucária Manufacturing Facility Araucária, Brazil	Owned	Front and rear axles, machining of forged and cast products and constant velocity joints
Rayong Manufacturing Facility       Rayong, Thailand	Owned	Front and rear axles and driveshafts
Albion Automotive Glasgow, Scotland	Leased	Front and rear axles for medium and heavy-duty trucks and buses and transfer cases
Changshu Manufacturing Facility Changshu, China	Owned	Front axles, independent rear drive axles, rear drive modules, gear sets and machined cases
Pantnagar Manufacturing Facility       Pantnagar, India	Owned	Rear axles and driveshafts
Pune Manufacturing Facility       Pune, India	Owned	Rear axles and driveheads
Chennai Manufacturing Facility Chennai, India	Owned	Assembly of front and rear axles
Swidnica Manufacturing Facility        Swidnica, Poland	Owned	Transmission differentials and machined products
World Headquarters Detroit, MI	Owned	Executive and administrative offices
Quality Engineering Technical Center       Auburn Hills, MI	Owned	Prototypes, R&D and design engineering
Technical Center       Rochester Hills, MI	Owned	R&D, design engineering, metallurgy, testing and validation

We believe that our property and equipment is properly maintained and in good operating condition. We will continue to evaluate capacity requirements in light of current and projected market conditions. We also intend to continue redeploying assets in order to increase our capacity utilization and reduce future capital expenditures to support program launches.

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Item 3. Legal Proceedings

We are involved in various legal proceedings incidental to our business. Although the outcome of these matters cannot be predicted with certainty, we do not believe that any of these matters, individually or in the aggregate, will have a material effect on our financial condition, results of operations or cash flows.

We are subject to various federal, state, local and foreign environmental and occupational safety and health laws, regulations and ordinances, including those regulating air emissions, water discharge, waste management and environmental cleanup. We closely monitor our environmental conditions to ensure that we are in compliance with applicable laws, regulations and ordinances. We have made, and will continue to make, capital and other expenditures to comply with environmental requirements, including recurring administrative costs. Such expenditures were not significant in 2014, 2013 and 2012.

Item 4. Mine Safety Disclosures

Not applicable.

Part II

Item 5. Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities

Market Information

Our common stock, par value $0.01 per share, is listed for trading on the New York Stock Exchange (NYSE) under the symbol “AXL.”

Stockholders and High and Low Sales Prices

2014		1st  Quarter		2nd  Quarter		3rd  Quarter		4th  Quarter		Full Year
	High	$	21.15	$	19.61	$	19.81	$	22.79	$	22.79
	Low	$	17.84	$	17.29	$	16.77	$	16.40	$	16.40
2013
	High	$	13.72	$	18.63	$	20.94	$	20.45	$	20.94
	Low	$	11.03	$	11.94	$	18.65	$	17.41	$	11.03

Prices are the quarterly high and low closing sales prices for our common stock as reported by the NYSE. We had approximately 315 stockholders of record as of February 19, 2015.

Dividends

We did not declare or pay any cash dividends on our common stock in 2014. Our revolving credit agreement limits our ability to declare or pay dividends or distributions on capital stock.

Securities Authorized for Issuance under Equity Compensation Plans

The information regarding our securities authorized for issuance under equity compensation plans is incorporated by reference from our Proxy Statement.

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Item 6. Selected Financial Data

FIVE YEAR CONSOLIDATED FINANCIAL SUMMARY

Year Ended December 31,

	2014				2013				2012				2011				2010
	(in millions, except per share data)
Statement of income data
Net sales	$	3,696.0			$	3,207.3			$	2,930.9			$	2,585.0			$	2,283.0
Gross profit	522.8				478.7				399.7				458.0			(f)	407.2			(f)
Selling, general and
administrative expenses	255.2				238.4				243.3				231.7				197.6
Operating income	267.6				240.3				156.4				226.3			(f)	209.6			(f)
Net interest expense	(97.8		)		(115.3		)		(101.0		)		(82.7		)		(85.2		)
Net income	143.0			(a)	94.5			(b)	366.7			(b)(c)(d)	139.5			(b)(e)(f)	119.0			(f)
Net income attributable to AAM	143.0			(a)	94.5			(b)	367.7			(b)(c)(d)	145.2			(b)(e)(f)	119.9			(f)
Diluted earnings per share	$	1.85			$	1.23			$	4.87			$	1.93		(f)	$	1.61		(f)
Balance sheet data
Cash and cash equivalents	$	249.2			$	154.0			$	62.4			$	169.2			$	244.6
Total assets	3,259.2				3,027.5			(f)	2,864.5			(f)	2,327.2			(f)	2,113.7			(f)
Total long-term debt	1,523.4				1,559.1				1,454.1				1,180.2				1,010.0
Total AAM stockholders' equity (deficit)	113.4				40.5			(f)	(113.9		)	(f)	(418.6		)	(f)	(475.0		)	(f)
Dividends declared per share	—				—				—				—				—
Statement of cash flows data
Cash provided by (used in) operating    activities	$	318.4			$	223.0			$	(175.5	)		$	(56.3	)		$	240.3
Cash used in investing activities	(195.3		)		(218.7		)		(185.4		)		(184.1		)		(107.0		)
Cash provided by (used in) financing    activities	(21.4		)		88.8				253.5				167.2				(66.4		)
Other data
Depreciation and amortization	$	199.9			$	177.0			$	152.2			$	139.4			$	131.6
Capital expenditures	206.5				251.9				207.6				163.1				108.3
Purchase buyouts of leased equipment	—				—				—				13.4				7.8
Proceeds from sale-leaseback of equipment	—				24.1				12.1				—				—

(a) Includes a settlement charge of $23.1 million, net of tax, related to our terminated vested lump-sum pension payout in the U.S.

(b) Includes charges of $35.1 million, net of tax, in 2013, $19.8 million in 2012, and $3.1 million in 2011 related to debt refinancing and redemption costs.

(c) Includes net special charges, curtailment gains, asset impairments and asset redeployment and other restructuring costs associated with plant closures of $40.6 million (including $28.7 million of expense related to contractual termination benefits provided to certain eligible UAW associates as a result of the DMC and CKMF plant closures).

(d) Includes the impact of the reversal of our valuation allowance on U.S. federal deferred tax assets of $337.5 million in the fourth quarter of 2012.

(e) Includes asset impairments, other non-recurring costs and tax refunds of $16.6 million in 2011 (including $0.5 million related to the non-controlling interest portion of a $1.6 million asset impairment recorded by e-AAM).

(f) Due to the immaterial error discussed in Note 1, these balances have been revised. For further discussion of the revision, see Note 1 - Organization and Summary of Significant Accounting Policies.

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Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations

COMPANY OVERVIEW

American Axle & Manufacturing Holdings, Inc. (Holdings) and its subsidiaries (collectively, we, our, us or AAM) is a Tier I supplier to the automotive industry. We manufacture, engineer, design and validate driveline and drivetrain systems and related components and chassis modules for light trucks, sport utility vehicles (SUVs), passenger cars, crossover vehicles and commercial vehicles. Driveline and drivetrain systems include components that transfer power from the transmission and deliver it to the drive wheels. Our driveline, drivetrain and related products include axles, chassis modules, driveshafts, power transfer units, transfer cases, chassis and steering components, driveheads, transmission parts, electric drive systems and metal-formed products. In addition to locations in the United States (U.S.) (Michigan, Ohio, Indiana and Pennsylvania), we also have offices or facilities in Brazil, China, Germany, India, Japan, Luxembourg, Mexico, Poland, Scotland, South Korea, Sweden and Thailand.

We are the principal supplier of driveline components to General Motors Company (GM) for its full-size rear-wheel drive (RWD) light trucks and SUVs manufactured in North America, supplying substantially all of GM's rear axle and four-wheel drive and all-wheel drive (4WD/AWD) axle requirements for these vehicle platforms. Sales to GM were approximately 68% of our consolidated net sales in 2014, 71% in 2013, and 73% in 2012.

We are the sole-source supplier to GM for certain axles and other driveline products for the life of each GM vehicle program covered by Lifetime Program Contracts and Long Term Program Contracts (collectively, LPCs). Substantially all of our sales to GM are made pursuant to the LPCs. The LPCs have terms equal to the lives of the relevant vehicle programs or their respective derivatives, which typically run 5 to 7 years, and require us to remain competitive with respect to technology, design and quality.

We also supply driveline system products to FCA US LLC, formerly known as Chrysler Group LLC (Chrysler), for heavy-duty Ram full-size pickup trucks and its derivatives, as well as the AWD Jeep Cherokee and the AWD Chrysler 200. Sales to Chrysler were approximately 18% of our consolidated net sales in 2014, 12% in 2013 and 10% in 2012. In addition to GM and Chrysler, we supply driveline systems and other related components to Volkswagen AG (Volkswagen), Audi AG (Audi), Mack Trucks Inc. (Mack Truck), Harley-Davidson Inc., Nissan Motor Co., Ltd. (Nissan), PACCAR Inc., Honda Motor Co., Ltd., Jaguar Land Rover Limited (JLR), Daimler Truck, Deere & Company, Ford Motor Company (Ford) and other original equipment manufacturers (OEMs) and Tier I supplier companies such as Jatco Ltd. and Hino Motors Ltd. Our consolidated net sales to customers other than GM increased 29% to $1,199.9 million in 2014 as compared to $926.7 million in 2013 and $792.6 million in 2012.

INDUSTRY TRENDS

There are a number of significant trends affecting the highly competitive automotive industry. As general economic and industry specific conditions have stabilized and improved, the global automotive industry continues to experience intense competition, volatility in fuel, steel, metallic and other commodity prices and significant pricing pressures. At the same time, the industry is intently focused on investing in future products that will incorporate the latest technology, meet changing customer demands and comply with more stringent government regulations.

In 2014, the U.S. SAAR increased to 16.4 million units, which compares to 15.5 million units in 2013 and 14.4 million units in 2012, as the U.S. economy and domestic automotive industry continued to recover. As a result of a reduction in oil prices, pent-up demand and the increasing age of vehicles currently on the road, we believe that the U.S. domestic OEMs and their suppliers will continue to be able to capitalize on these trends and provide improved financial performance.

MORE STRINGENT GOVERNMENT REGULATIONS FOR FUEL-EFFICIENCY AND EMISSIONS REDUCTIONS With a shift towards aggressive, environmentally focused legislation in the U.S., there has been an increased demand for technologies designed to help reduce emissions, increase fuel economy and minimize the environmental impact of vehicles. In 2012, the Obama Administration announced the new CAFE standard for cars and light-duty trucks, raising the standard to the equivalent of 54.5 miles per gallon, by 2025. As a result, OEMs and suppliers are competing intensely to develop and market new and alternative technologies, such as electric vehicles, hybrid vehicles, fuel cells, diesel engines and efficiency improvements of driveline systems to improve fuel economy and emissions.

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We are responding to the continuing change in vehicle mix in the North American market as well as expected increases in CAFE regulations, with ongoing research and development (R&D) efforts that focus on fuel economy, emission reduction and environmental improvements. These efforts have led to new business awards for products that support AWD and RWD passenger cars and crossover vehicles and further position us to compete as this product mix shift continues. We are continuing to invest in the development of advanced products focused on fuel economy, mass reductions, vehicle safety and performance, while leveraging electronics and technology. We have increased our focus on alternative energy and electronics by investing in product development that is consistent with the continued shift in market demand. Approximately 75% of AAM's new and incremental business backlog launching from 2015 to 2017, which is an estimated $825 million, relates to AAM's newest AWD systems for passenger cars and crossover vehicles. These systems are designed to improve fuel efficiency by up to 30%, reduce CO₂ emissions and provide AWD capability with the additional benefit of improved vehicle stability when compared to traditional mechanical AWD systems. We have also developed and commercialized a disconnecting AWD system, which strengthens AAM's position as a leader in global driveline systems technology. AAM's EcoTrac^® Disconnecting AWD system is an industry-first technology that seamlessly engages AWD functionality while improving fuel efficiency and reducing CO₂ emissions. The system is featured on the award-winning Jeep Cherokee and Chrysler 200.

AAM has established a high-efficiency product portfolio that is designed to improve axle efficiency and fuel economy through innovative product design technology. Our lineup of high efficiency axles for rear-wheel drive and AWD applications is featured on multiple new vehicles, including GM's Cadillac ATS, which was named the 2013 North American Car of the Year. Our high efficiency rear-drive module is also featured on the Cadillac CTS, Motor Trend's 2014 Car of the Year. Through the development of our EcoTrac^® Disconnecting AWD system, our high efficiency axles, PowerLite^® axles, PowerDense^® gears and our e-AAM hybrid and electric driveline systems, we have significantly advanced our efforts to improve fuel efficiency and ride and handling performance while reducing emissions and mass.

INCREASE IN DEMAND FOR ELECTRONIC INTEGRATION The electronic content of vehicles continues to expand, largely driven by consumer demand for greater vehicle performance, functionality, and affordable convenience options. This demand is a result of increased communication abilities in vehicles as well as increasingly stringent regulatory standards for energy efficiency, emissions reduction and increased safety. As these electronics continue to become more reliable and affordable, we expect this trend to continue. The increased use of electronics provides greater flexibility in vehicles and enables the OEMs to better control vehicle stability, fuel efficiency and safety while improving the overall driving experience. Suppliers with enhanced capability in electronic integration have greater sourcing opportunities with OEMs and may be able to obtain more favorable pricing for these products.

GLOBAL AUTOMOTIVE PRODUCTION The trend toward the globalization of automotive production continues to intensify in regions such as Asia (particularly China, India, South Korea and Thailand), Eastern Europe and South America. Automotive production in these regions is expected to continue to grow while production in the traditional automotive centers such as North America and Western Europe have improved from recent declines. As our customers continue to design their products for global markets, they will continue to require global support from their suppliers. For this reason, it is critical that we maintain a global presence in these markets in order to remain competitive for new contracts. We have significantly increased our global installed capacity to support current programs and future opportunities. We have expanded our capacity in Brazil, China, Mexico, Poland, Thailand and the U.S. and constructed new facilities in Mexico and the U.S. We also have offices in China, India and South Korea to support these developing markets. We expect our business activity in these markets to increase significantly over the next several years. Approximately 60% of our new and incremental business backlog is for end use markets outside the U.S. and approximately 85% has been sourced to our manufacturing facilities outside the U.S.

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RESULTS OF OPERATIONS

NET SALES Net sales increased by 15% to $3,696.0 million in 2014 as compared to $3,207.3 million in 2013 and $2,930.9 million in 2012.

The increase in sales in 2014, as compared to 2013, primarily reflects an increase of approximately 8% in production volumes for the North American light truck and SUV programs we currently support for GM and Chrysler and higher sales in support of Chrysler's AWD Jeep Cherokee.

Our sales in 2013, as compared to 2012, reflect an increase in global launch activity principally related to higher production volumes for the major North American light truck programs we currently support, additional content on GM and Chrysler's next generation full-size pickup truck programs and a 17% increase in non-GM sales.

Our content-per-vehicle (CPV) (as measured by the dollar value of our products supporting our customers' North American light truck and SUV programs) increased to $1,667 in 2014 as compared to $1,550 in 2013 and $1,473 in 2012. The increases in CPV in 2014 as compared to 2013, and 2013 as compared to 2012, principally reflect additional content on GM and Chrysler's next generation full-size pickup truck programs.

Our 4WD/AWD penetration rate increased to 68.5% in 2014 as compared to 66.1% in 2013 and 64.4% in 2012. We define 4WD/AWD penetration as the total number of front axles we produce divided by the total number of rear axles we produce for the vehicle programs we support.

GROSS PROFIT Gross profit increased to $522.8 million in 2014 as compared to $478.7 million in 2013 and $399.7 million in 2012. Gross margin was 14.1% in 2014 as compared to 14.9% in 2013 and 13.6% in 2012. The increase in gross profit in 2014 as compared to 2013 is primarily due to the profit contribution from higher sales, including our largest North American light truck programs and other global launches. Gross profit in 2014 also included the adverse impact of a $31.2 million settlement charge related to a voluntary lump-sum pension payout which was offered to eligible terminated vested participants in our U.S. hourly pension plans.

The increase in gross profit in 2013 as compared to 2012 is primarily due to the profit contribution from higher sales, including our largest North American light truck programs and other global launches. The increase in gross profit in 2013 also reflected lower warranty accruals and the impact of stabilized levels of global launch activity, which includes lower material and freight costs, as compared to 2012. In addition, our gross profit in 2013 also included the impact of receiving $11.4 million related to settling a capacity increase cancellation claim with one of our largest customers, which is partially offset by other costs associated with this capacity increase.

Gross profit in 2012 included special charges of $28.7 million of expense related to contractual termination benefits provided to certain eligible UAW associates as a result of the DMC and CKMF plant closures and $32.5 million of expense primarily related to asset impairments, asset redeployment and other restructuring costs associated with the closure of DMC and CKMF. The impact on gross profit as a result of these special charges was partially offset by a $21.8 million other postretirement benefits (OPEB) curtailment gain recorded as a result of the DMC and CKMF hourly associates who have terminated employment from AAM as a result of our plant closures and a $5.2 million settlement gain related to the termination of the UAW Legal Services Plan. Also included in gross profit in 2012, is a gain of $2.2 million related to the sale of CKMF.

SELLING, GENERAL AND ADMINISTRATIVE EXPENSES (SG&A) SG&A (including R&D) was $255.2 million in 2014 as compared to $238.4 million in 2013 and $243.3 million in 2012. SG&A as a percentage of net sales was 6.9% in 2014, 7.4% in 2013 and 8.3% in 2012. R&D spending in product, process and systems, net of customer engineering, design and development (ED&D) recoveries, was $103.9 million in 2014 as compared to $103.4 million in 2013 and $123.4 million in 2012. The change in SG&A in 2014 as compared to 2013 is primarily due to an increase in costs associated with upgrades to our enterprise resource planning (ERP) systems. SG&A in 2014 also included the adverse impact of a $4.3 million settlement charge related to a voluntary lump-sum pension payout which was offered to eligible terminated vested participants in our U.S. salaried pension plan.

The change in SG&A in 2013 as compared to 2012 primarily reflects the favorable impact of lower R&D expense, which included customer ED&D recoveries. This was partially offset by higher incentive compensation accruals and stock-based compensation expense.

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OPERATING INCOME Operating income increased to $267.6 million in 2014 as compared to $240.3 million in 2013 and $156.4 million in 2012. Operating margin was 7.2% in 2014 as compared to 7.5% in 2013 and 5.3% in 2012. The changes in operating income and operating margin in 2014, 2013 and 2012 were due to the factors discussed in Sales, Gross Profit and SG&A.

INTEREST EXPENSE Interest expense was $99.9 million in 2014, $115.9 million in 2013 and $101.6 million in 2012. The decrease in interest expense in 2014 as compared to 2013 reflects the decrease in our weighted-average interest rate and lower average outstanding borrowings during 2014 as compared to 2013. The increase in interest expense in 2013 as compared to 2012 reflects higher average outstanding borrowings.

The weighted-average interest rate of our total debt outstanding was 6.3%, 7.3% and 7.8% during 2014, 2013 and 2012, respectively.

INVESTMENT INCOME Investment income was $2.1 million in 2014 and $0.6 million in both 2013and 2012. Investment income includes interest and dividends earned on cash and cash equivalents during the period. 

OTHER INCOME (EXPENSE) Following are the components of Other Income (Expense) for 2014, 2013 and 2012:

Debt refinancing and redemption costs In 2013, we expensed $36.8 million of unamortized debt issuance costs, discount and prepayment premiums related to the termination of our class C loan facility, the purchase and voluntary redemption of $300.0 million of our 7.875% senior unsecured notes (7.875% Notes) and the voluntary redemption of the remaining $340.0 million of our 9.25% senior secured notes (9.25% Notes). In 2012, we expensed $19.8 million of unamortized debt issuance costs, discount and prepayment premiums related to our amended and restated revolving credit agreement, the purchase and redemption of $250.0 million of our 5.25% senior unsecured notes and the voluntary redemption of $42.5 million of our 9.25% Notes.

Other, net Other, net, which includes the net effect of foreign exchange gains and losses and our proportionate share of earnings from equity in unconsolidated subsidiaries, was income of $6.9 million in 2014, and expense of $1.9 million and $4.1 million in 2013 and 2012, respectively.

INCOME TAX EXPENSE (BENEFIT) Income tax expense (benefit) was expense of $33.7 million in 2014 as compared to a benefit of $8.2 million and $335.2 million in 2013 and 2012, respectively. Our effective income tax rate was 19.1% in 2014 as compared to negative 9.5% in 2013 and negative 1,064.2% in 2012.

The following is a reconciliation of our provision for income taxes to the expected amounts using statutory rates:

	2014		2013		2012
Federal statutory	35.0	%	35.0	%	35.0	%
Foreign income taxes	(25.1	)	(48.5	)	(85.0	)
Change in enacted tax rates	—		(9.9	)	—
State and local	0.1		0.2		3.5
Tax credits	(11.4	)	—		—
Valuation allowance	4.5		12.4		(985.0	)
U.S. tax on unremitted foreign earnings	1.9		(0.2	)	(29.5	)
Uncertain tax positions	13.0		(0.5	)	(5.2	)
Other	1.1		2.0		2.0
Effective income tax rate	19.1	%	(9.5	)%	(1,064.2	)%

Our income tax expense and effective tax rate for 2014 and 2013 primarily reflect favorable foreign tax rates, along with our inability to realize a tax benefit for current foreign losses. In 2014, we recorded tax expense of $23.1 million for changes to prior year uncertain tax positions related to transfer pricing and expense of $3.4 million for a change in estimate for U.S. tax on unremitted foreign earnings. We also recorded a net tax benefit of $20.1 million in 2014 related to our ability to utilize tax credits in future periods resulting in the recognition of a deferred tax asset.

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In 2013, new Mexican tax reform was enacted that, among other things, increased the tax rate related to Maquiladora Companies from 17.5% to 30%. We recorded a tax benefit of $8.5 million as a result of revaluing our deferred tax assets at the newly enacted rate. In 2013, we recorded tax expense of $4.8 million relating to changes in estimates in the U.S. and certain foreign jurisdictions. Our income tax benefit and effective tax rate for 2013 also reflects the impact of recording a tax benefit of $1.5 million relating to the release of a prior year unrecognized tax benefit due to the expiration of the applicable statute of limitations and a tax benefit of $3.3 million relating to an election we made in 2013 regarding the treatment of foreign exchange gains and losses in a foreign jurisdiction. During 2013, we also settled various income tax audits resulting in a reduction of our liability for unrecognized income tax benefits of $8.4 million and a cash payment of $4.7 million.

In 2012, our business returned to a position of cumulative profitability on a pre-tax basis, considering our operating results for the three years ended December 31, 2012. We concluded that this record of cumulative profitability in recent years, in addition to the restructuring of our U.S. operations and our long range forecast showing continued profitability, provided sufficient positive evidence that our net U.S. federal tax benefits more likely than not would be realized. Accordingly, in 2012, we released the valuation allowance against our net federal deferred tax assets for entities in the U.S., resulting in a $337.5 million benefit in our 2012 provision for income taxes. Our income tax benefit and effective tax rate in 2012 reflected the impact of this valuation allowance reversal.

Our income tax expense and effective tax rate for 2012 also reflect a net tax expense of $1.3 million related to the amendment of state income tax returns as a result of the settlement of federal income tax audits for the tax years 2004 through 2007.

As of December 31, 2014 and December 31, 2013, we have a valuation allowance of $156.9 million and $163.7 million, respectively, related to net deferred tax assets in several foreign jurisdictions and U.S. state and local jurisdictions. See "Critical Accounting Estimates – Valuation of Deferred Tax Assets and Other Tax Liabilities" below for more detail on the impact of this reversal.

NET INCOME ATTRIBUTABLE TO AAM AND EARNINGS PER SHARE (EPS) Net income attributable to AAM was $143.0 million in 2014 as compared to $94.5 million in 2013 and $367.7 million in 2012. Diluted earnings per share was $1.85 in 2014 as compared to $1.23 per share in 2013 and $4.87 per share in 2012. Net Income and EPS were primarily impacted by the factors discussed in Gross Profit, SG&A, Interest Expense, Debt Refinancing and Redemption Costs and Income Tax Expense (Benefit).

LIQUIDITY AND CAPITAL RESOURCES

Our primary liquidity needs are to fund capital expenditures, debt service obligations and our working capital requirements.  We believe that operating cash flow, available cash and cash equivalent balances and available committed borrowing capacity under our revolving credit facility will be sufficient to meet these needs.

OPERATING ACTIVITIES Net cash provided by operating activities was $318.4 million in 2014 as compared to net cash provided by operating activities of $223.0 million in 2013 and net cash used in operating activities of $175.5 million in 2012.

Sales and production volumes Cash provided by operating activities was favorably impacted by higher profits related to an increase in sales and production activity in 2014, 2013 and 2012.

Deferred Revenue In the first quarter of 2014, we reached an agreement with GM to increase installed capacity and adjust product mix for our largest vehicle program. As a result of this agreement, we received $32.8 million in 2014 and recorded the payments as deferred revenue, of which we recognized $5.4 million of revenue related to this agreement in 2014. As of December 31, 2014, we have $6.9 million of deferred revenue that is classified as a current liability and $20.5 million of deferred revenue that is recorded as a noncurrent liability on our Consolidated Balance Sheet.

Also in the first quarter of 2014, we reached an agreement with GM to recover certain costs related to the delay of another major product program. We initially recorded deferred revenue of $9.3 million related to this agreement. We began recognizing this deferred revenue as revenue in the third quarter of 2014 when this program launched in certain markets. In 2014, we recognized revenue of $0.5 million related to this agreement. As of December 31,

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2014 we have recorded deferred revenue of $8.8 million, $1.1 million of which is classified as a current liability and $7.7 million which is recorded as a noncurrent liability on our Consolidated Balance Sheet.

Interest paid Interest paid in 2014 was $91.1 million as compared to $123.2 million in 2013 and $88.9 million in 2012. The decrease in interest paid in 2014 as compared to 2013 primarily relates to a reduction in interest expense driven by lower average outstanding borrowings and lower average interest rates in 2014 as compared to 2013. The increase in interest paid in 2013, as compared to 2012, primarily reflects higher average outstanding borrowings during the year and the early payment of interest related to debt refinancing.

Pension and OPEBDue to our significant pension contributions made in 2012, we were not required to make any cash payments in 2014 or 2013 to satisfy our regulatory funding requirements. We contributed $225.4 million to our pension trusts in 2012, which included our regulatory funding requirements of $35.0 million. These funding figures compare to our annual pension expense, including special and contractual termination benefits and settlements of $32.0 million in 2014, $5.7 million in 2013 and $24.6 million in 2012.

In 2012, AAM and the Pension Benefit Guaranty Corporation entered into an agreement regarding any liability that may have arisen under the Employee Retirement Income Security Act of 1974 in connection with the closures of DMC and CKMF. As part of this agreement, in 2012, we contributed $114.7 million in excess of our statutory minimum to our U.S. hourly pension plan, which is included in the contributions described above.

Our cash outlay for OPEB, net of GM cost sharing, was $11.8 million in 2014, $11.2 millionin 2013, and$11.5 million in 2012. This compares to our annual postretirement cost, including special and contractual termination benefits, curtailment gains and settlements, of $13.4 million in 2014, $12.7 million in 2013, and $3.3 million in 2012. We expect our cash outlay for other postretirement benefit obligations in 2015, net of GM cost sharing, to be approximately $16 million.

On September 22, 2014, we announced a plan to offer a voluntary one-time lump sum payment option to certain eligible terminated vested participants in our U.S. pension plans that, if accepted, would settle our pension obligations to them (“AAM Pension Payout Offer”). The lump sum settlements, which were paid from plan assets, reduced our liabilities and administrative costs going forward.

The AAM Pension Payout Offer was open from October 2, 2014 through November 12, 2014 to approximately 6,000 of our 14,000 total U.S. pension plan participants. In addition to the lump sum payment option, the AAM Pension Payout Offer allowed participants to commence payment of their monthly benefits early.

In total, 3,335 participants accepted the offer and we made a one-time lump sum payment from our pension trust of $104.2 million on December 19, 2014. As a result of this settlement, we remeasured the assets and liabilities of our U.S. pension plans, which reduced our projected benefit obligation by $131.1 million and resulted in a non-cash charge of $35.5 million in the fourth quarter of 2014 related to the accelerated recognition of certain deferred losses.

Accounts receivable Accounts receivable at year-end 2014 were $532.7 million as compared to $458.5 million at year-end 2013 and $463.4 million at year-end 2012. The increase in our year-end 2014 accounts receivable balance was primarily due to increased sales in November and December 2014 as compared to November and December of 2013, as well as the timing of weekly payments from GM.

Inventories At year-end 2014, inventories were $248.8 million as compared to $261.8 million at year-end 2013 and $224.3 million at year-end 2012. The decrease in inventory in 2014, as compared to 2013, primarily reflects a reduction in launch related activities at year-end, as well as inventory reduction initiatives. The increase in inventory in 2013, as compared to 2012, primarily reflects increased materials on hand to support increased production levels in our current programs and new programs launched in 2014.

Accounts payable At year-end 2014, accounts payable were $444.3 million as compared to $437.4 million at year-end 2013 and $387.7 million at year-end 2012. The increase in accounts payable at year-end 2013, as compared to year-end 2012, primarily reflects an increase in sales and production volumes.

Cash paid for special charges In 2012, we made cash payments of $37.9 million for special charges primarily related to asset redeployment, capital expenditures and other costs associated with the closure of DMC and CKMF in 2012.

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GM Payment Terms As a result of a change in the administration of GM supplier payment terms from pay on shipment to pay on receipt, our operating cash flow was negatively impacted by approximately $33.1 million in 2012.

INVESTING ACTIVITIES Capital expenditures were $206.5 million in 2014, $251.9 million in 2013 and $207.6 million in 2012. Our capital spending primarily supported our significant global program launches within our new and incremental business backlog, as well as the upgrades to our ERP systems.

We expect our capital spending in 2015 to be approximately 5% of sales, which includes support for our global program launches in 2015 and 2016 within our new and incremental business backlog.

In the first quarter of 2014, we sold our Detroit Manufacturing Complex and received net proceeds of $9.2 million related to this transaction. For the year ended December 31, 2014, we have classified $7.2 million of these proceeds, which represents the amount related to the land and building for which we will have no future continuing involvement, in the Investing Activities section of our Consolidated Statement of Cash Flows.

In 2013 and 2012, we entered into various sale-leaseback transactions for equipment recently purchased. We received proceeds of $24.1 million and $12.1 million in 2013 and 2012, respectively, related to these transactions.

FINANCING ACTIVITIES Net cash used in financing activities was $21.4 million in 2014 as compared to cash provided by financing activities of $88.8 million in 2013 and $253.5 million in 2012. Total debt outstanding was $1,536.4 million at year-end 2014, $1,559.1 million at year-end 2013 and $1,454.1 million at year-end 2012. The decrease in total debt outstanding at year-end 2014, as compared to year-end 2013, was primarily due to repayments on certain current maturities of long-term debt. The increase in total debt outstanding at year-end 2013, as compared to year-end 2012, was primarily due to the issuance of $400.0 million of 6.25% senior unsecured notes, $200.0 million of 5.125% senior unsecured notes (5.125% Notes) and $150.0 million drawn under our term facility, which was partially offset by using these proceeds to purchase and redeem $300.0 million of our 7.875% Notes and to redeem the remaining $340.0 million of our 9.25% Notes.

REVOLVING CREDIT FACILITY AND TERM FACILITY As of December 31, 2014, the revolving credit facility provided up to $523.5 million of revolving bank financing commitments through September 13, 2018. At December 31, 2014, $505.5 million was available under the revolving credit facility, which reflected a reduction of $18.0 million for standby letters of credit issued against the facility.

The credit agreement provides for a senior secured term loan A facility in an aggregate principal amount of $150.0 million (term facility). During 2014, we made principal payments of $7.5 million on our term facility. We also paid remaining debt issuance costs of $0.1 million in 2014 associated with the execution of amending our revolving credit facility and term facility. In 2013 and 2012, we paid debt issuance costs of $6.9 million and $1.7 million, respectively, associated with the amendments and restatements of our revolving credit facility.

Borrowings under the revolving credit facility and term facility bear interest at rates based on adjusted LIBOR or an alternate base rate, plus an applicable margin. The applicable margin for LIBOR-based loans will be between 1.5% and 3.0%.

Under the revolving credit facility, certain negative covenants were revised to provide increased flexibility. In the event AAM achieves investment grade corporate credit ratings from S&P and Moody's, AAM may elect to release all of the collateral from the liens granted pursuant to the collateral agreement, subject to notice requirements and other conditions. The revolving credit facility and term facility are secured on a first priority basis by all or substantially all of the assets of AAM and each guarantor under the collateral agreement dated as of November 7, 2008, as amended and restated as of September 13, 2013.

The revolving credit facility provides back-up liquidity for our foreign credit facilities. We intend to use the availability of long-term financing under the revolving credit facility to refinance any current maturities related to such debt agreements that are not otherwise refinanced on a long-term basis in their local markets, except where otherwise reclassified to current portion of long-term debt on our Consolidated Balance Sheet.

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In the first quarter of 2013, we terminated our class C loan facility of $72.8 million, which would have matured on June 30, 2013. Upon termination, we expensed $0.5 million of unamortized debt issuance costs related to the class C facility. We had been amortizing the debt issuance costs over the expected life of the borrowing.

9.25% NOTES In 2009, we issued $425.0 million of 9.25% Notes. The notes were issued at a discount of $5.5 million. Net proceeds from these notes were used for the repayment of certain indebtedness.

In 2012, we elected to exercise an option to redeem 10% of the original amount of our 9.25% Notes outstanding at a redemption price of 103% of the principal amount. This resulted in a principal payment of $42.5 million and $1.3 million for the redemption premium, as well as payment of accrued interest. We expensed $1.0 million in 2012 for the write-off of a proportional amount of unamortized debt discount and issuance costs related to this debt that we had been amortizing over the expected life of the borrowing.

Pursuant to the terms of our 9.25% Notes, in the fourth quarter of 2013, we voluntarily redeemed the remaining outstanding 9.25% Notes using the proceeds from the term facility and the issuance of the 5.125% Notes. This resulted in a principal payment of $340.0 million and $18.9 million for redemption premiums, as well as payments of accrued interest. We expensed $6.7 million in 2013 related to the write-off of the remaining unamortized debt discount and issuance costs related to our 9.25% Notes that we had been amortizing over the expected life of the borrowing.

7.875% NOTES In the first quarter of 2013, we voluntarily purchased and redeemed $300.0 million of our 7.875% Notes, and paid accrued interest. Upon purchase and redemption, we expensed $8.5 million related to redemption premiums, $0.1 million of professional fees and unamortized debt issuance costs of $2.1 million related to this debt. We had been amortizing the debt issuance costs over the expected life of the borrowing.

7.75% NOTES In 2011, we issued $200.0 million of 7.75% senior unsecured notes due 2019 (7.75% Notes). Net proceeds from these notes were used for general corporate purposes, including the repayment of certain amounts outstanding under our revolving credit facility.

6.625% NOTES In 2012, we issued $550.0 million of 6.625% senior unsecured notes due 2022 (6.625% Notes). Net proceeds from the 6.625% Notes were used to fund the purchase and redemption of $250.0 million of the outstanding 5.25% Notes, including the payment of interest, the redemption of $42.5 million aggregate principal amount of our 9.25% Notes, certain pension obligations and for other general corporate purposes. We paid debt issuance costs of $8.9 million related to the 6.625% Notes in 2012.

6.25% NOTES In 2013, we issued $400.0 million of 6.25% senior unsecured notes due 2021 (6.25% Notes). Net proceeds from the 6.25% Notes were used to fund the purchase and redemption of our 7.875% Notes and for other general corporate purposes. We paid debt issuance costs of $6.6 million in 2013 related to the 6.25% Notes.

5.125% NOTES In the fourth quarter of 2013, we issued$200.0 millionof5.125%senior unsecured notes due 2019 (5.125%Notes). Net proceeds from the5.125%Notes were used to redeem the remaining$190.0 millionoutstanding under our9.25%Notes. We paid debt issuance costs related to the5.125%Notes of$0.2 million and $3.1 million in 2014 and 2013, respectively.

Foreign credit facilities We utilize local currency credit facilities to finance the operations of certain foreign subsidiaries. At December 31, 2014, $38.9 million was outstanding under these facilities and an additional $51.1 million was available.

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Credit ratings To access public debt capital markets, the Company relies on credit rating agencies to assign short-term and long-term credit ratings to our securities as an indicator of credit quality for fixed income investors. A credit rating agency may change or withdraw its ratings based on its assessment of our current and future ability to meet interest and principal repayment obligations. Credit ratings affect our cost of borrowing under our revolving credit facility and may affect our access to debt capital markets and other costs to fund our business. The credit ratings and outlook currently assigned to our securities by the rating agencies are as follows:

	Corporate Family Rating	Senior Unsecured Notes Rating	Outlook
Standard & Poor's	BB-	B+	Stable
Moody's Investors Services	B1	B2	Stable
Fitch Ratings	BB-	BB-	Stable

Dividend program We have not declared or paid any cash dividends on our common stock in 2014, 2013 or 2012.

Purchase of noncontrolling interest In 2012, we paid $4.0 million to acquire the remaining shares of e-AAM. e-AAM, previously a JV between AAM and Saab Automobile AB, was created to design and commercialize electric and hybrid driveline systems designed to improve fuel efficiency, reduce CO₂ emissions and provide AWD capability with the additional benefit of improved vehicle stability when compared to traditional mechanical AWD systems.

Stock repurchase In 2014, we repurchased shares of AAM common stock for $0.3 million; in 2013, we repurchased shares of AAM common stock for $0.4 million; and in 2012, we repurchased 0.5 million shares of AAM common stock for $5.9 million, each to satisfy employee tax withholding obligations due upon the vesting of our restricted stock grants.

Exercise of employee stock options We received $1.2 million in 2014, $1.1 million in 2013, and $0.1 million in 2012 related to the exercise of employee stock options.

Off-balance sheet arrangements Our off-balance sheet financing relates principally to operating leases for machinery and equipment, commercial office and production facilities, vehicles and other assets. We lease certain machinery and equipment under operating leases with various expiration dates.  In 2013 and 2012, we entered into various sale-leaseback transactions for $24.1 million and $12.1 million, respectively, for machinery and equipment. Pursuant to these operating leases, we may have the option to purchase the underlying equipment on specified dates. Remaining lease repurchase options are $17.9 million through 2017.

Contractual obligations The following table summarizes payments due on our contractual obligations as of December 31, 2014:

	Payments due by period
	Total		<1yr		1-3 yrs		3-5 yrs		>5 yrs
	(in millions)
Current and long-term debt	$	1,531.4	$	34.8	$	35.3	$	511.3	$	950.0
Interest obligations	591.5		97.0		190.0		169.2		135.3
Capital lease obligations	5.0		0.4		0.9		1.3		2.4
Operating leases (1)	75.0		19.9		33.6		11.4		10.1
Purchase obligations(2)	109.8		98.8		11.0		—		—
Other long-term liabilities(3)	631.3		55.5		127.7		128.7		319.4
Total	$	2,944.0	$	306.4	$	398.5	$	821.9	$	1,417.2

(1) Operating leases include all lease payments through the end of the contractual lease terms, which includes elections for repurchase options and excludes any non-exercised purchase options. These commitments include machinery and equipment, commercial office and production facilities, vehicles and other assets.

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(2) Purchase obligations represent our obligated purchase commitments for capital expenditures and related project expense.

(3) Other long-term liabilities represent our estimated pension and other postretirement benefit obligations, net of GM cost sharing, that were actuarially determined through 2024, lease payments due to our continuing involvement with a building we sold during 2014, as well as our unrecognized income tax benefits.

CYCLICALITY AND SEASONALITY

Our operations are cyclical because they are directly related to worldwide automotive production, which is itself cyclical and dependent on general economic conditions and other factors. Our business is also moderately seasonal as our major OEM customers historically have an extended shutdown of operations (typically 1-2 weeks) in conjunction with their model year changeover and an approximate one-week shutdown in December. Accordingly, our quarterly results may reflect these trends.

LEGAL PROCEEDINGS

We are involved in various legal proceedings incidental to our business. Although the outcome of these matters cannot be predicted with certainty, we do not believe that any of these matters, individually or in the aggregate, will have a material effect on our financial condition, results of operations or cash flows.

We are subject to various federal, state, local and foreign environmental and occupational safety and health laws, regulations and ordinances, including those regulating air emissions, water discharge, waste management and environmental cleanup. We closely monitor our environmental conditions to ensure that we are in compliance with applicable laws, regulations and ordinances. We have made, and will continue to make, capital and other expenditures (including recurring administrative costs) to comply with environmental requirements, including recurring administrative costs. Such expenditures were not significant in 2014, 2013 and 2012.

EFFECT OF NEW ACCOUNTING STANDARDS

On January 1, 2014, new accounting guidance became effective regarding financial statement presentation of an unrecognized tax benefit when a net operating loss (NOL) carryforward, a similar tax loss, or a tax credit carryforward exists. The new guidance requires entities to present an unrecognized tax benefit, or a portion of an unrecognized tax benefit, in the financial statements as a reduction to a deferred tax asset for an NOL carryforward, a similar tax loss, or a tax credit carryforward, except when one is not available as of the reporting date or the entity does not intend to use the deferred tax asset for this purpose. This guidance does not affect the tabular reconciliation of the total amounts of unrecognized tax benefits, as the tabular reconciliation presents the gross amount of unrecognized tax benefits. The adoption of this new guidance has had no impact on our consolidated financial statements.

In May 2014, new accounting guidance was issued that outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. The guidance is based on the principle that an entity should recognize revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services.  The guidance also requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments and assets recognized from costs incurred to fulfill a contract.  Entities have the option of using either a full retrospective or a modified retrospective approach for the adoption of the new standard.  This guidance becomes effective for AAM at the beginning of our 2017 fiscal year and early adoption is not permitted.  We are currently assessing the impact that this standard will have on our consolidated financial statements.

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CRITICAL ACCOUNTING ESTIMATES

In order to prepare consolidated financial statements in conformity with accounting principles generally accepted in the United States of America (GAAP), we are required to make estimates and assumptions that affect the reported amounts and disclosures in our consolidated financial statements. These estimates are subject to an inherent degree of uncertainty and actual results could differ from our estimates.

Other items in our consolidated financial statements require estimation. In our judgment, they are not as critical as those disclosed below. We have discussed and reviewed our critical accounting estimates disclosure with the Audit Committee of our Board of Directors.

PENSION AND OTHER POSTRETIREMENT BENEFITS In calculating our assets, liabilities and expenses related to pension and OPEB, key assumptions include the discount rate, expected long-term rates of return on plan assets and rates of increase in health care costs.

The discount rates used in the valuation of our U.S. pension and OPEB obligations were based on an actuarial review of a hypothetical portfolio of long-term, high quality corporate bonds matched against the expected payment stream for each of our plans. In 2014, the weighted average discount rates determined on that basis were 4.10% for the valuation of our pension benefit obligations and 4.15% for the valuation of our OPEB obligations. The discount rate used in the valuation of our U.K. pension obligation was based on a review of long-term bonds, including published indices in the applicable market. In 2014, the discount rate determined on that basis was 3.70%. The expected long-term rates of return on our plan assets were 7.50% for our U.S. plans and 5.00% for our U.K. plan in 2014. We developed these rates of return assumptions based on future capital market expectations for the asset classes represented within our portfolio and a review of long-term historical returns. The asset allocation for our plans was developed in consideration of the demographics of the plan participants and expected payment stream of the liability. Our investment policy allocates approximately 30-65% of the U.S. plans' assets to equity securities, depending on the plan, with the remainder invested in fixed income securities, hedge fund investments and cash. The rates of increase in health care costs are based on current market conditions, inflationary expectations and historical information.

All of our assumptions were developed in consultation with our actuarial service providers. While we believe that we have selected reasonable assumptions for the valuation of our pension and OPEB obligations at year-end 2014, actual trends could result in materially different valuations.

The effect on our pension plans of a 0.5% decrease in both the discount rate and expected return on assets is shown below as of December 31, 2014, our valuation date.

			Expected
	Discount		Return on
	Rate		Assets
	(in millions)
Decline in funded status	$	51.0	N/A
Increase in 2014 expense	$	1.4	$	3.3

No changes in benefit levels or in the amortization of gains or losses have been assumed. The increase in 2014 expense excludes the impact of the settlement charge.

For 2015, we assumed a weighted average annual increase in the per-capita cost of covered health care benefits of 7.0% for OPEB. The rate is assumed to decrease gradually to 5.0% by 2023 and remain at that level thereafter. A 0.5% decrease in the discount rate for our OPEB would have decreased total expense in 2014 and increased the postretirement obligation, net of GM cost sharing, at December 31, 2014 by $0.7 million and $25.8 million, respectively. A 1.0% increase in the assumed health care trend rate would have increased total service and interest cost in 2014 and the postretirement obligation, net of GM cost sharing, at December 31, 2014 by $1.6 million and $41.3 million, respectively.

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AAM and GM share in the cost of OPEB for eligible retirees proportionally based on the length of service an employee had with AAM and GM. We estimate the future cost sharing payments and present it as an asset on our Consolidated Balance Sheet. As of December 31, 2014, we estimated $287.8 million in future GM cost sharing. If, in the future, GM were unable to fulfill this financial obligation, our OPEB obligations may be different than our current estimates.

VALUATION OF DEFERRED TAX ASSETS AND OTHER TAX LIABILITIES Because we operate in many different geographic locations, including several foreign, state and local tax jurisdictions, the evaluation of our ability to use all recognized deferred tax assets is complex.

We are required to estimate whether recoverability of our deferred tax assets is "more likely than not," based on forecasts of taxable income in the related tax jurisdictions. In these estimates, we use historical results, projected future operating results based upon approved business plans, eligible carryforward periods, tax planning opportunities and other relevant considerations. This includes the consideration of tax law changes, prior profitability performance and the uncertainty of future projected profitability.

Under applicable GAAP, a sustained period of profitability in our operations is required before we would change our judgment regarding the need for a valuation allowance against our net deferred tax assets.  In 2012, our business returned to a position of cumulative profitability on a pre-tax basis, considering our operating results for the three years ended December 31, 2012. We concluded that this record of cumulative profitability in recent years, in addition to the restructuring of our U.S. operations and our long range forecast showing continued profitability, had provided sufficient positive evidence that our net U.S. federal tax benefits more likely than not will be realized. Accordingly, in the fourth quarter of 2012, we released the valuation allowance against our net federal deferred assets for entities in the U.S., resulting in a $337.5 million benefit in our 2012 provision for income taxes.

As of December 31, 2014, we have a valuation allowance of approximately $156.9 million related to net deferred tax assets in several foreign jurisdictions and U.S. state and local jurisdictions. As of December 31, 2013 and 2012, our valuation allowance was $163.7 million and $166.1 million, respectively.

If, in the future, we generate taxable income on a sustained basis in foreign and U.S. state jurisdictions for which we have recorded valuation allowances, our current estimate of the recoverability of our deferred tax assets could change and result in the future reversal of some or all of the valuation allowance. While we believe we have made appropriate valuations of our deferred tax assets, unforeseen changes in tax legislation, regulatory activities, audit results, operating results, financing strategies, organization structure and other related matters may result in material changes in our deferred tax asset valuation allowances or our tax liabilities.

We record uncertain tax positions on the basis of a two-step process whereby: (1) we determine whether it is "more likely than not" that the tax positions will be sustained based on the technical merits of the position: and (2) for those positions that meet the "more likely than not" recognition threshold, we recognize the largest amount of tax benefit that is greater than 50% likely to be realized upon ultimate settlement with the related tax authority. We record interest and penalties on uncertain tax positions in income tax expense (benefit).

As of December 31, 2014, 2013 and 2012, we have recorded a liability for unrecognized income tax benefits and related interest and penalties of $59.5 million, $25.8 million and $30.9 million, respectively. Based on the status of the IRS audits and audits outside the U.S., and the protocol of finalizing audits by the relevant tax authorities, it is not possible to estimate the impact of changes, if any, to previously recorded uncertain tax positions. Although it is not possible to predict the timing of the conclusion of all ongoing audits with certainty, we anticipate that the current U.S. IRS audit will be completed during 2015. It is also possible that the current 2007 and 2008 audits with the Mexican tax authorities will be completed before the end of 2016. Although it is difficult to estimate with certainty the amount of an audit settlement for the years currently under audit, we do not expect any settlements will be materially different from what we have recorded in unrecognized tax benefits. We will continue to monitor the progress and conclusions of all ongoing audits and will adjust our estimated liability as necessary.

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PRODUCT WARRANTY We record a liability and related charge to cost of goods sold for estimated warranty obligations at the dates our products are sold or when specific warranty issues are identified. Product warranties not expected to be paid within one year are recorded as a non-current liability on our Consolidated Balance Sheet. Our estimated warranty obligations for products sold are based on significant management estimates, with input from our warranty, sales, engineering, quality and legal departments. For products and customers with actual warranty payment experience, we estimate warranty costs principally based on past claims history. For certain products and customers, actual warranty payment experience does not exist or is not mature. In these cases, we estimate our costs based on the contractual arrangements with our customers, existing customers' warranty program terms and internal and external warranty data, which includes a determination of our responsibility for potential warranty issues or claims and estimates of repair costs. We actively study trends of our warranty claims and take action to improve product quality and minimize warranty claims. We continuously evaluate these estimates and our customers' administration of their warranty programs. We closely monitor actual warranty claim data and adjust the liability, as necessary, on a quarterly basis.

In addition to our ordinary warranty provisions with our customers, we are also liable for product recalls and field actions, which are recorded at the time our obligation is probable and can be reasonably estimated. For warranty obligations of this nature, we bear the full responsibility of these costs. We recorded $2.3 million and $9.9 million of expense in 2013 and 2012, respectively, related to a specific field action with our largest customer.

Our warranty accrual, including both our ordinary warranty and specific field action accruals, was $12.4 million as of December 31, 2014 and $14.3 million as of December 31, 2013. In 2013, we made warranty payments of $12.3 million, of which $11.3 million related to the field action. During 2014 and 2013, we also made adjustments to our warranty accrual to reflect revised estimates regarding our projected future warranty obligations. Actual experience could differ from the amounts estimated requiring adjustments to these liabilities in future periods. It is possible that changes in our assumptions or future warranty issues could materially affect our financial position and results of operations.

GOODWILL We record goodwill when the purchase price of acquired businesses exceeds the value of their identifiable net tangible and intangible assets acquired. We periodically evaluate goodwill for impairment in accordance with the accounting guidance for goodwill and other indefinite-lived intangibles that are not amortized. We review our goodwill for impairment annually during the fourth quarter. In addition, we review goodwill for impairment whenever adverse events or changes in circumstances indicate a possible impairment.  This review utilizes a two-step impairment test which is performed at a consolidated level, as AAM has a single reporting unit. The first step involves a comparison of the fair value of the reporting unit with its carrying amount, including goodwill.  If the fair value of the reporting unit exceeds its carrying amount, goodwill of the reporting unit is not considered impaired and thus the second step of the impairment test is unnecessary. If the carrying amount of the reporting unit exceeds its fair value, the second step of the process involves a measurement and comparison of the fair value of goodwill with its carrying amount.  If the carrying amount of the reporting unit's goodwill exceeds the fair value of that goodwill, an impairment loss is recognized in an amount equal to the excess.  

The determination of our reporting unit and impairment indicators require us to make significant judgments. In order to approximate the fair value of our reporting unit for purposes of testing recoverability, we use the total market capitalization of AAM, a market approach, which is then compared to the total carrying amount of AAM. Under the market approach, the fair value is based on observed market prices. We performed our annual impairment test in the fourth quarter and determined there was no impairment to goodwill in 2014.

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IMPAIRMENT OF LONG-LIVED ASSETS Long-lived assets, excluding goodwill and other indefinite-lived intangible assets, to be held and used are reviewed for impairment whenever adverse events or changes in circumstances indicate a possible impairment. Recoverability of each “held for use” asset group affected by impairment indicators is determined by comparing the forecasted undiscounted cash flows of the operations to which the assets relate to their carrying amount.  If the carrying amount of an asset group exceeds the undiscounted cash flows and is therefore nonrecoverable, the assets in this group are written down to their estimated fair value.  We estimate fair value based on market prices, when available, or on a discounted cash flow analysis.  Long-lived assets held for sale are recorded at the lower of their carrying amount or fair value less cost to sell. Significant judgments and estimates used by management when evaluating long-lived assets for impairment include:

• An assessment as to whether an adverse event or circumstance has triggered the need for an impairment review;  

• Determination of asset groups, the primary asset within each group, and the primary asset's average estimated useful life;

• Undiscounted future cash flows generated by the assets; and

• Determination of fair value when an impairment is deemed to exist, which may require assumptions related to future general economic conditions, future expected production volumes, product pricing and cost estimates, working capital and capital investment requirements, discount rates and estimated liquidation values.

In 2012, we recorded asset impairment charges of $5.8 million related to previously purchased lease buyouts of equipment that we no longer expect to use in our operations.

ESTIMATED USEFUL LIVES FOR DEPRECIATION   At December 31, 2014, approximately 80% of our capitalized investment in property, plant and equipment was related to productive machinery and equipment used in support of our manufacturing operations.  The selection of appropriate useful life estimates for such machinery and equipment is a critical element of our ability to properly match the cost of such assets with the operating profits and cash flow generated by their use.  We currently depreciate productive machinery and equipment on the straight-line method using composite useful life estimates up to 12 years.

While we believe that the useful life estimates currently being used for depreciation purposes reasonably approximate the period of time we will use such assets in our operations, unforeseen changes in product design and technology standards or cost, quality and delivery requirements may result in actual useful lives that differ materially from the current estimates.

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Forward-Looking Statements

In this MD&A and elsewhere in this Annual Report, we make statements concerning our expectations, beliefs, plans, objectives, goals, strategies, and future events or performance. Such statements are “forward-looking” statements within the meaning of the Private Securities Litigation Reform Act of 1995 and relate to trends and events that may affect our future financial position and operating results. The terms such as “will,” “may,” “could,” “would,” “plan,” “believe,” “expect,” “anticipate,” “intend,” “project,” "target," and similar words or expressions, as well as statements in future tense, are intended to identify forward-looking statements.

Forward-looking statements should not be read as a guarantee of future performance or results, and will not necessarily be accurate indications of the times at, or by, which such performance or results will be achieved. Forward-looking statements are based on information available at the time those statements are made and/or management’s good faith belief as of that time with respect to future events and are subject to risks and may differ materially from those expressed in or suggested by the forward-looking statements. Important factors that could cause such differences include, but are not limited to:

• reduced purchases of our products by General Motors Company (GM), FCA US LLC, formerly known as Chrysler Group LLC (Chrysler), or other customers;

• reduced demand for our customers' products (particularly light trucks and sport utility vehicles (SUVs) produced by GM and Chrysler);

• our ability to develop and produce new products that reflect market demand;

• lower-than-anticipated market acceptance of new or existing products;

• our ability to attract new customers and programs for new products;

• our ability to respond to changes in technology, increased competition or pricing pressures;

• our ability to achieve the level of cost reductions required to sustain global cost competitiveness;

• supply shortages or price increases in raw materials, utilities or other operating supplies for us or our customers as a result of natural disasters or otherwise;

• our ability to successfully implement upgrades to our enterprise resource planning systems;

• global economic conditions;

• risks inherent in our international operations (including adverse changes in political stability, taxes and other law changes, potential disruptions of production and supply, and currency rate fluctuations);

• liabilities arising from warranty claims, product recall or field actions, product liability and legal proceedings to which we are or may become a party, or the impact of product recall or field actions on our customers;

• our ability to maintain satisfactory labor relations and avoid work stoppages;

• our suppliers', our customers' and their suppliers' ability to maintain satisfactory labor relations and avoid work stoppages;

• our ability or our customers' and suppliers' ability to successfully launch new product programs on a timely basis;

• our ability to realize the expected revenues from our new and incremental business backlog;

• negative or unexpected tax consequences;

• price volatility in, or reduced availability of, fuel;

• our ability to consummate and integrate acquisitions and joint ventures;

• our ability to attract and retain key associates;

• our ability to protect our intellectual property and successfully defend against assertions made against us;

• availability of financing for working capital, capital expenditures, research and development (R&D) or other general corporate purposes including acquisitions, as well as our ability to comply with financial covenants;

• our customers' and suppliers' availability of financing for working capital, capital expenditures, R&D or other general corporate purposes;

• changes in liabilities arising from pension and other postretirement benefit obligations;

• risks of noncompliance with environmental laws and regulations or risks of environmental issues that could result in unforeseen costs at our facilities;

• adverse changes in laws, government regulations or market conditions affecting our products or our customers' products (such as the Corporate Average Fuel Economy (CAFE) regulations);

• our ability or our customers' and suppliers' ability to comply with the Dodd-Frank Act and other regulatory requirements and the potential costs of such compliance; and

• other unanticipated events and conditions that may hinder our ability to compete.

It is not possible to foresee or identify all such factors and we make no commitment to update any forward-looking statement or to disclose any facts, events or circumstances after the date hereof that may affect the accuracy of any forward-looking statement.

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Item 7A. Quantitative and Qualitative Disclosures about Market Risk

MARKET RISK

Our business and financial results are affected by fluctuations in world financial markets, including interest rates and currency exchange rates. Our hedging policy has been developed to manage these risks to an acceptable level based on management's judgment of the appropriate trade-off between risk, opportunity and cost. We do not hold financial instruments for trading or speculative purposes.

CURRENCY EXCHANGE RISK From time to time, we use foreign currency forward contracts to reduce the effects of fluctuations in exchange rates, primarily relating to the Mexican Peso, Euro, Swedish Krona, Polish Zloty and Pound Sterling. At December 31, 2014, we had forward contracts with a notional amount of $99.3 million outstanding.  The potential decrease in fair value of foreign exchange contracts, assuming a 10% adverse change in the foreign currency exchange rates, would be approximately $9.0 million and $6.1 million at December 31, 2014 and December 31, 2013, respectively.

Future business operations and opportunities, including the expansion of our business outside North America, may further increase the risk that cash flows resulting from these activities may be adversely affected by changes in currency exchange rates. If and when appropriate, we intend to manage these risks by utilizing local currency funding of these expansions and various types of foreign exchange contracts.

INTEREST RATE RISK We are exposed to variable interest rates on certain credit facilities. From time to time, we have used interest rate hedging to reduce the effects of fluctuations in market interest rates. As of December 31, 2014, there are no interest rate swaps in place. The pre-tax earnings and cash flow impact of a one-percentage-point increase in interest rates (approximately 16% of our weighted-average interest rate at December 31, 2014) on our long-term debt outstanding at December 31, 2014 and December 31, 2013 would be approximately $1.8 million and $2.0 million, respectively, on an annualized basis.

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AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

Item 8. Financial Statements and Supplementary Data

Consolidated Statements of Income

Year Ended December 31,

	2014			2013			2012
	(in millions, except per share data)
Net sales	$	3,696.0		$	3,207.3		$	2,930.9
Cost of goods sold	3,173.2			2,728.6			2,531.2
Gross profit	522.8			478.7			399.7
Selling, general and administrative expenses	255.2			238.4			243.3
Operating income	267.6			240.3			156.4
Interest expense	(99.9		)	(115.9		)	(101.6		)
Investment income	2.1			0.6			0.6
Other income (expense)
Debt refinancing and redemption costs	—			(36.8		)	(19.8		)
Other, net	6.9			(1.9		)	(4.1		)
Income before income taxes	176.7			86.3			31.5
Income tax expense (benefit)	33.7			(8.2		)	(335.2		)
Net income	$	143.0		$	94.5		$	366.7
Net loss attributable to noncontrolling interests	—			—			1.0
Net income attributable to AAM	$	143.0		$	94.5		$	367.7
Basic earnings per share	$	1.85		$	1.23		$	4.88
Diluted earnings per share	$	1.85		$	1.23		$	4.87

See accompanying notes to consolidated financial statements

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AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

Consolidated Statements of Comprehensive Income

Year Ended December 31,

	2014			2013			2012
	(in millions)
Net income	$	143.0		$	94.5		$	366.7
Other comprehensive income (loss), net of tax
Defined benefit plans, net of $23.2 million, $(41.3) million and $32.3 million of tax in 2014, 2013 and 2012, respectively	(42.7		)	76.6			(58.9		)
Foreign currency translation adjustments	(30.3		)	(26.2		)	(9.4		)
Change in derivatives	(7.7		)	(2.0		)	7.8
Other comprehensive income (loss)	(80.7		)	48.4			(60.5		)
Comprehensive income	62.3			142.9			306.2
Net loss attributable to noncontrolling interests	—			—			1.0
Foreign currency translation adjustments attributable to noncontrolling interests	—			—			0.3
Comprehensive income attributable to AAM	$	62.3		$	142.9		$	306.9

See accompanying notes to consolidated financial statements

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AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

Consolidated Balance Sheets

December 31,

	2014			2013
Assets	(in millions, except per share data)
Current assets
Cash and cash equivalents	$	249.2		$	154.0
Accounts receivable, net	532.7			458.5
Inventories, net	248.8			261.8
Deferred income taxes	40.2			34.9
Prepaid expenses and other	68.6			87.1
Total current assets	1,139.5			996.3
Property, plant and equipment, net	1,061.1			1,058.5
Deferred income taxes	368.8			341.8
Goodwill	155.0			156.4
GM postretirement cost sharing asset	274.5			242.0
Other assets and deferred charges	260.3			232.5
Total assets	$	3,259.2		$	3,027.5
Liabilities and Stockholders' Equity
Current liabilities
Current portion of long-term debt	$	13.0		$	—
Accounts payable	444.3			437.4
Accrued compensation and benefits	109.1			110.1
Deferred revenue	22.1			17.0
Deferred income taxes	0.1			0.1
Other accrued expenses	98.6			94.1
Total current liabilities	687.2			658.7
Long-term debt	1,523.4			1,559.1
Deferred income taxes	9.1			9.8
Deferred revenue	94.2			76.4
Postretirement benefits and other long-term liabilities	831.9			683.0
Total liabilities	3,145.8			2,987.0
Stockholders' equity
Series A junior participating preferred stock, par value $0.01 per share;
0.1 million shares authorized; no shares outstanding in 2014 or 2013	—			—
Preferred stock, par value $0.01 per share; 10.0 million shares
authorized; no shares outstanding in 2014 or 2013	—			—
Common stock, par value $0.01 per share; 150.0 million shares authorized;
81.9 million and 81.6 million shares issued as of December 31, 2014 and 2013, respectively	0.8			0.8
Series common stock, par value $0.01 per share; 40.0 million
shares authorized; no shares outstanding in 2014 or 2013	—			—
Paid-in capital	623.7			612.8
Accumulated deficit	(31.4		)	(174.4		)
Treasury stock at cost, 6.1 million shares in 2014 and 6.0 million shares in 2013	(182.8		)	(182.5		)
Accumulated other comprehensive income (loss), net of tax
Defined benefit plans	(240.6		)	(197.9		)
Foreign currency translation adjustments	(48.9		)	(18.6		)
Unrecognized gain (loss) on derivatives	(7.4		)	0.3
Total AAM stockholders' equity	113.4			40.5
Noncontrolling interests in subsidiaries	—			—
Total stockholders' equity	113.4			40.5
Total liabilities and stockholders' equity	$	3,259.2		$	3,027.5

See accompanying notes to consolidated financial statements

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AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

Consolidated Statements of Cash Flows

Year Ended December 31,

	2014			2013			2012
	(in millions)
Operating Activities
Net income	$	143.0		$	94.5		$	366.7
Adjustments to reconcile net income to net cash provided by (used in) operating activities
Asset impairments and related indirect inventory obsolescence	—			—			5.8
Depreciation and amortization	199.9			177.0			152.2
Deferred income taxes	(9.2		)	(18.7		)	(343.8		)
Stock-based compensation	9.7			10.8			2.4
Pensions and other postretirement benefits, net of contributions	31.8			6.5			(208.4		)
Gain on disposal of property, plant and equipment, net	(2.6		)	(3.5		)	(1.9		)
Debt refinancing and redemption costs	—			9.2			1.5
Changes in operating assets and liabilities
Accounts receivable	(78.3		)	(0.3		)	(130.6		)
Inventories	10.9			(42.5		)	(49.9		)
Accounts payable and accrued expenses	13.7			66.3			60.9
Deferred revenue	24.5			(5.6		)	(21.6		)
Other assets and liabilities	(25.0		)	(70.7		)	(8.8		)
Net cash provided by (used in) operating activities	318.4			223.0			(175.5		)
Investing activities
Purchases of property, plant and equipment	(206.5		)	(251.9		)	(207.6		)
Proceeds from sale of property, plant and equipment	9.1			9.1			10.1
Proceeds from sale-leaseback of equipment	—			24.1			12.1
Proceeds from government grants	2.1			—			—
Net cash used in investing activities	(195.3		)	(218.7		)	(185.4		)
Financing activities
Net short-term borrowings (repayments) under credit facilities	—			(29.9		)	10.4
Proceeds from issuance of long-term debt and other	5.0			786.7			562.6
Payments of other long-term debt, capital lease obligations and other	(27.0		)	(652.0		)	(299.1		)
Debt issuance costs	(0.3		)	(16.7		)	(10.6		)
Purchase of noncontrolling interest	—			—			(4.0		)
Employee stock option exercises, including tax benefit	1.2			1.1			0.1
Purchase of treasury stock	(0.3		)	(0.4		)	(5.9		)
Net cash provided by (used in) financing activities	(21.4		)	88.8			253.5
Effect of exchange rate changes on cash	(6.5		)	(1.5		)	0.6
Net increase (decrease) in cash and cash equivalents	95.2			91.6			(106.8		)
Cash and cash equivalents at beginning of year	154.0			62.4			169.2
Cash and cash equivalents at end of year	$	249.2		$	154.0		$	62.4
Supplemental cash flow information
Interest paid	$	91.1		$	123.2		$	88.9
Income taxes paid, net	$	11.3		$	11.6		$	14.7

See accompanying notes to consolidated financial statements

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AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

Consolidated Statement of Stockholders' Equity (Deficit)

													Accumulated Other
													Comprehensive
	Common Stock												Income (Loss)			Noncontrolling
	Shares		Par		Paid-in		Accumulated			Treasury			Attributable to			Interests in
	Outstanding		Value		Capital		Deficit			Stock			AAM			Subsidiaries
	(in millions)
Balance at January 1, 2012, as revised (see Note 1)	73.8		$	0.8	$	597.2	$	(636.6	)	$	(176.2	)	$	(203.8	)	$	5.9
Net income							367.7									(1.0		)
Change in derivatives													7.8
Foreign currency translation													(9.7		)	0.3
Defined benefit plans, net													(58.9		)
Exercise of stock options and vesting of restricted stock	1.5				0.1
Stock-based compensation					2.4
Acquisition of noncontrolling interest					1.2											(5.2		)
Purchase of treasury stock	(0.5	)								(5.9		)
Balance at December 31, 2012	74.8		0.8		600.9		(268.9		)	(182.1		)	(264.6		)	—
Net income							94.5									—
Change in derivatives													(2.0		)
Foreign currency translation													(26.2		)
Defined benefit plans, net													76.6
Exercise of stock options and vesting of restricted stock	0.8				1.1
Stock-based compensation					10.8
Purchase of treasury stock	—									(0.4		)
Balance at December 31, 2013	75.6		$	0.8	$	612.8	$	(174.4	)	$	(182.5	)	$	(216.2	)	$	—
Net income							143.0									—
Change in derivatives													(7.7		)
Foreign currency translation													(30.3		)
Defined benefit plans, net													(42.7		)
Exercise of stock options and vesting of restricted stock	0.2				1.2
Stock-based compensation					9.7
Purchase of treasury stock	—									(0.3		)
Balance at December 31, 2014	75.8		$	0.8	$	623.7	$	(31.4	)	$	(182.8	)	$	(296.9	)	$	—

See accompanying notes to consolidated financial statements

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AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1. ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

ORGANIZATION American Axle & Manufacturing Holdings, Inc. (Holdings) and its subsidiaries (collectively, we, our, us or AAM) is a Tier I supplier to the automotive industry. We manufacture, engineer, design and validate driveline and drivetrain systems and related components and chassis modules for light trucks, sport utility vehicles (SUVs), passenger cars, crossover vehicles and commercial vehicles. Driveline and drivetrain systems include components that transfer power from the transmission and deliver it to the drive wheels. Our driveline, drivetrain and related products include axles, chassis modules, driveshafts, power transfer units, transfer cases, chassis and steering components, driveheads, transmission parts, electric drive systems and metal-formed products. In addition to locations in the United States (U.S.) (Michigan, Ohio, Indiana and Pennsylvania), we also have offices or facilities in Brazil, China, Germany, India, Japan, Luxembourg, Mexico, Poland, Scotland, South Korea, Sweden and Thailand.

PRINCIPLES OF CONSOLIDATION We include the accounts of Holdings and its subsidiaries in our consolidated financial statements. We eliminate the effects of all intercompany transactions, balances and profits in our consolidation.

REVISION OF PRIOR PERIOD FINANCIAL STATEMENTS In connection with the preparation of our consolidated financial statements for the year ended December 31, 2014, we determined that entries recorded in the third quarter of 2014 to reduce certain accrued accounts payable balances by $8.4 million were previously recorded as a reduction of cost of goods sold but should have been recorded as an adjustment to opening accumulated deficit because the amounts giving rise to the correction originated in periods prior to January 1, 2012.

In accordance with ASC 250 Accounting Changes and Error Corrections as well as the SEC's Staff Accounting Bulletin No. 99, Materiality, we evaluated the materiality of this error on prior period financial statements and determined that it did not result in a material misstatement to the financial conditions, results of operations, or cash flows for any of the periods presented.

We also determined that the effect of recording the correction during the third quarter of 2014 was material to the financial statements for the three months ended September 30, 2014. As a result, prior period financial statements have been revised in accordance with ASC 250 and the SEC's Staff Accounting Bulletin No. 108, Considering the Effects of Prior Year Misstatements when Quantifying Misstatements in Current Year Financial Statements, and accumulated deficit at January 1, 2012 was reduced by $6.9 million. Consequently, the previously reported December 31, 2013 balances for accounts payable of $445.8 million, accumulated deficit of $181.3 million and current deferred income tax assets of $36.4 million were reduced by $8.4 million, $6.9 million and $1.5 million, respectively.

REVENUE RECOGNITION We recognize revenue when products are shipped to our customers and title transfers under standard commercial terms or when realizable in accordance with our commercial agreements. If we are uncertain as to whether we will be successful collecting a balance in accordance with our understanding of a commercial agreement, we do not recognize the revenue or cost recovery until such time as the uncertainty is removed.

In the first quarter of 2014, we reached an agreement with General Motors Company (GM) to increase installed capacity and adjust product mix for our largest vehicle program. As a result of this agreement, we received $32.8 million in 2014 and recorded the payments as deferred revenue. We will recognize this deferred revenue into sales over the life of the program on a straight line basis over approximately 5 years, which is the period we expect GM to benefit from this capacity and mix change. In 2014, we recognized revenue of $5.4 million related to this agreement. As of December 31, 2014, we have $6.9 million of deferred revenue that is classified as a current liability and $20.5 million of deferred revenue that is recorded as a noncurrent liability on our Consolidated Balance Sheet.

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AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

Also in the first quarter of 2014, we reached an agreement with GM to recover certain costs related to the delay of another major product program. We received $9.3 million in 2014 related to this agreement and initially recorded deferred revenue of $9.3 million. We will recognize this deferred revenue into sales over the life of the program on a straight-line basis over approximately 8 years, which is the period we expect GM to benefit from this agreement. We began recognizing this deferred revenue as revenue in the third quarter of 2014 when this program launched in certain markets. In 2014, we recognized revenue of $0.5 million related to this agreement. As of December 31, 2014, we have recorded deferred revenue of $8.8 million, $1.1 million of which is classified as a current liability and $7.7 million which is recorded as a noncurrent liability on our Consolidated Balance Sheet.

In 2009, we entered into a settlement and commercial agreement (2009 Settlement and Commercial Agreement) with General Motors Company (GM). As part of this agreement, we received $110.0 million from GM, of which we recorded $79.7 million as deferred revenue.  As of December 31, 2014, our deferred revenue related to the 2009 Settlement and Commercial Agreement is $37.5 million, $8.0 million of which is classified as a current liability and $29.5 million of which is recorded as a noncurrent liability on our Consolidated Balance Sheet.  We recognize this deferred revenue into revenue on a straight-line basis over 120 months, which ends September 2019 and is the period that we expect GM to benefit under the 2009 Settlement and Commercial Agreement.  We recognized revenue of $8.0 million, in 2014, 2013 and 2012 related to this agreement.

As of December 31, 2014, the majority of the remaining deferred revenue primarily relates to customer payments to implement capacity programs, which is generally recognized into revenue over the life of these programs. We recognized $7.5 million, $10.5 million and $13.1 million of revenue for these programs in 2014, 2013 and 2012, respectively.

RESEARCH AND DEVELOPMENT (R&D) COSTS We expense R&D, as incurred, in selling, general and administrative expenses on our Consolidated Statement of Income. R&D spending, net of engineering, design and development recoveries, was $103.9 million, $103.4 million and $123.4 million in 2014, 2013 and 2012, respectively.

CASH AND CASH EQUIVALENTS Cash and cash equivalents include all cash balances and highly liquid investments in money market funds with maturities of 90 days or less at the time of purchase.

ACCOUNTS RECEIVABLE The majority of our accounts receivable are due from original equipment manufacturers (OEMs) in the automotive industry and are past due when payment is not received within the stated terms. Trade accounts receivable for our largest customer, GM, are generally due within approximately 50 days from the date of receipt.

Amounts due from customers are stated net of allowances for doubtful accounts. We determine our allowances by considering factors such as the length of time accounts are past due, our previous loss history, the customer's ability to pay its obligation to us, and the condition of the general economy and the industry as a whole. The allowance for doubtful accounts was $4.6 million and $4.9 million as of December 31, 2014 and 2013, respectively. We write-off accounts receivable when they become uncollectible.

CUSTOMER TOOLING AND PRE-PRODUCTION COSTS RELATED TO LONG-TERM SUPPLY AGREEMENTS Engineering, R&D, and other pre-production design and development costs for products sold on long-term supply arrangements are expensed as incurred unless we have a contractual guarantee for reimbursement from the customer. Costs for tooling used to make products sold on long-term supply arrangements for which we have either title to the assets or the noncancelable right to use the assets during the term of the supply arrangement are capitalized in property, plant and equipment. Capitalized items and customer receipts in excess of tooling costs specifically related to a supply arrangement are amortized over the shorter of the term of the arrangement or over the estimated useful lives of the related assets.

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AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

INVENTORIES We state our inventories at the lower of cost or market.  The cost of our inventories is determined using the FIFO method.  When we determine that our gross inventories exceed usage requirements, or if inventories become obsolete or otherwise not saleable, we record a provision for such loss as a component of our inventory accounts.

Inventories consist of the following:

	December 31,
	2014			2013
	(in millions)
Raw materials and work-in-progress	$	243.8		$	263.4
Finished goods	32.9			25.7
Gross inventories	276.7			289.1
Inventory valuation reserves	(27.9		)	(27.3		)
Inventories, net	$	248.8		$	261.8

PROPERTY, PLANT AND EQUIPMENT We state property, plant and equipment, including amortizable tooling, at historical cost, as adjusted for impairments. Construction in progress includes costs incurred for the construction of buildings and building improvements, and machinery and equipment in process. Repair and maintenance costs that do not extend the useful life or otherwise improve the utility of the asset beyond its existing useful state are expensed in the period incurred.

We record depreciation and tooling amortization on the straight-line method over the estimated useful lives of the depreciable assets. Depreciation and tooling amortization amounted to $166.5 million, $151.8 million and $130.9 million in 2014, 2013 and 2012, respectively.

Property, plant and equipment consists of the following:

	Estimated	December 31,
	Useful Lives	2014			2013
	(years)	(in millions)
Land		$	26.2		$	29.5
Land improvements	10-15	19.0			18.9
Buildings and building improvements	15-40	314.3			306.6
Machinery and equipment	3-12	1,770.7			1,648.6
Construction in progress		91.4			95.1
		2,221.6			2,098.7
Accumulated depreciation and amortization		(1,160.5		)	(1,040.2		)
Property, plant and equipment, net		$	1,061.1		$	1,058.5

IMPAIRMENT OF LONG-LIVED ASSETS When impairment indicators exist, we evaluate the carrying value of long-lived assets for potential impairment. We consider projected future undiscounted cash flows, trends and other circumstances in making such estimates and evaluations. If impairment is deemed to exist, the carrying amount of the asset is adjusted based on its fair value. Recoverability of assets “held for use” is determined by comparing the forecasted undiscounted cash flows of the operations to which the assets relate to their carrying amount. When the carrying value of an asset group exceeds its fair value and is therefore nonrecoverable, those assets are written down to fair value. Fair value is determined based on market prices, when available, or a discounted cash flow analysis performed using management estimates.

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AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

GOODWILL We record goodwill when the purchase price of acquired businesses exceeds the value of their identifiable net tangible and intangible assets acquired. We periodically evaluate goodwill for impairment in accordance with the accounting guidance for goodwill and other indefinite-lived intangibles. We completed impairment tests in 2014 and 2013 and concluded that there was no impairment of our goodwill. The following table provides a reconciliation of changes in goodwill:

	December 31,
	2014			2013
	(in millions)
Beginning balance	$	156.4		$	156.4
Foreign currency translation	(1.4		)	—
Ending balance	$	155.0		$	156.4

INTANGIBLE ASSETS We are currently in the process of testing, validating and launching global enterprise resource planning (ERP) systems, at certain key locations, to upgrade many of our existing operating and financial systems. In connection with the development of these ERP systems, we have recorded an intangible asset of $19.2 million on our Consolidated Balance Sheet as of December 31, 2014. The intangible asset is related to costs incurred to obtain software licenses from a third party, as well as costs to design and develop this internal-use software. We incurred and capitalized $11.4 million and $7.8 million of these costs in 2014 and 2013, respectively. This intangible asset is classified as other assets and deferred charges on our Consolidated Balance Sheet and will be amortized over the estimated useful life of our ERP systems. We recorded $0.4 million and $0.1 million of expense for the amortization of these intangible assets in 2014 and 2013, respectively.

In connection with our e-AAM subsidiary, we have in-process research and development intangible assets which represent the technology that will be utilized in products to be launched in 2016. Accordingly, we will begin amortizing this asset on a straight-line basis at the start of production through the expected life cycle of the related products, which is expected to be approximately 5-7 years. These intangible assets are classified as other assets and deferred charges on our Consolidated Balance Sheet. The following table provides a reconciliation of changes in the carrying value of our in-process research and development intangible assets:

	December 31,
	2014			2013
	(in millions)
Beginning balance	$	7.4		$	7.4
Foreign currency translation	(1.2		)	—
Ending balance	$	6.2		$	7.4

DEBT ISSUANCE COSTS The costs related to the issuance or modification of long-term debt are deferred and amortized into interest expense over the life of each debt issue. As of December 31, 2014 and December 31, 2013, our unamortized debt issuance costs were $29.5 million and $35.6 million, respectively. Deferred amounts associated with the extinguishment of debt are expensed and classified as debt refinancing and redemption costs on our Consolidated Statement of Income.

DERIVATIVES We recognize all derivatives on the balance sheet at fair value and we are not subject to a master netting agreement. If a derivative qualifies under the accounting guidance as a hedge, depending on the nature of the hedge, changes in the fair value of the derivative are either offset against the change in fair value of the hedged asset, liability or firm commitment through earnings or recognized in other comprehensive income until the hedged item is recognized in earnings. The ineffective portion of a derivative's change in fair value, and changes in the fair value of derivatives that do not qualify as hedges, are immediately recognized in earnings. See Note 3 - Derivatives and Risk Management, for more detail on our derivatives.

CURRENCY TRANSLATION We translate the assets and liabilities of our foreign subsidiaries to U.S. dollars at end-of-period exchange rates. We translate the income statement elements of our foreign subsidiaries to U.S. dollars at average-period exchange rates. We report the effect of translation for our foreign subsidiaries that use the local currency as their functional currency as a separate component of stockholders' equity. Gains and losses

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AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

resulting from the remeasurement of assets and liabilities in a currency other than the functional currency of a subsidiary are reported in current period income. We also report any gains and losses arising from transactions denominated in a currency other than the functional currency of a subsidiary in current period income. These foreign currency gains and losses resulted in a gain of $6.4 million and losses of $4.2 million and $6.3 million, for the years ended 2014, 2013 and 2012, respectively.

USE OF ESTIMATES In order to prepare consolidated financial statements in conformity with accounting principles generally accepted in the United States of America (GAAP), we are required to make estimates and assumptions that affect the reported amounts and disclosures in our consolidated financial statements. Actual results could differ from those estimates.

EFFECT OF NEW ACCOUNTING STANDARDS On January 1, 2014, new accounting guidance became effective regarding financial statement presentation of an unrecognized tax benefit when a net operating loss (NOL) carryforward, a similar tax loss, or a tax credit carryforward exists. The new guidance requires entities to present an unrecognized tax benefit, or a portion of an unrecognized tax benefit, in the financial statements as a reduction to a deferred tax asset for an NOL carryforward, a similar tax loss, or a tax credit carryforward, except when one is not available as of the reporting date or the entity does not intend to use the deferred tax asset for this purpose. This guidance does not affect the tabular reconciliation of the total amounts of unrecognized tax benefits, as the tabular reconciliation presents the gross amount of unrecognized tax benefits. The adoption of this new guidance has had no impact on our consolidated financial statements.

In May 2014, new accounting guidance was issued that outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. The guidance is based on the principle that an entity should recognize revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services.  The guidance also requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments and assets recognized from costs incurred to fulfill a contract.  Entities have the option of using either a full retrospective or a modified retrospective approach for the adoption of the new standard.  This guidance becomes effective for AAM at the beginning of our 2017 fiscal year and early adoption is not permitted.  We are currently assessing the impact that this standard will have on our consolidated financial statements.

2. LONG-TERM DEBT AND LEASE OBLIGATIONS

Long-term debt consists of the following:

	December 31,
	2014		2013
	(in millions)
Revolving Credit Facility	$	—	$	—
Term Facility	142.5		150.0
7.75% Notes	200.0		200.0
6.625% Notes	550.0		550.0
6.25% Notes	400.0		400.0
5.125% Notes	200.0		200.0
Foreign credit facilities	38.9		53.8
Capital lease obligations	5.0		5.3
Debt	1,536.4		1,559.1
Less: Current portion of long-term debt	13.0		—
Long-term debt	$	1,523.4	$	1,559.1

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AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

REVOLVING CREDIT FACILITY AND TERM FACILITY As of December 31, 2014, the revolving credit facility provided up to $523.5 million of revolving bank financing commitments through September 13, 2018. At December 31, 2014, $505.5 million was available under the revolving credit facility, which reflected a reduction of $18.0 million for standby letters of credit issued against the facility.

The credit agreement provides for a senior secured term loan A facility in an aggregate principal amount of $150.0 million (term facility). During 2014, we made principal payments of $7.5 million on our term facility. We paid remaining debt issuance costs of $0.1 million in 2014 associated with the execution of amending our revolving credit facility and term facility. In 2013 and 2012, we paid debt issuance costs of $6.9 million and $1.7 million, respectively, associated with the amendments and restatements of our revolving credit facility.

Borrowings under the revolving credit facility and term facility bear interest at rates based on adjusted LIBOR or an alternate base rate, plus an applicable margin. The applicable margin for LIBOR-based loans will be between 1.5% and 3.0%.

In the event AAM achieves investment grade corporate credit ratings from S&P and Moody's, AAM may elect to release all of the collateral from the liens granted pursuant to the collateral agreement, subject to notice requirements and other conditions. The revolving credit facility and term facility are secured on a first priority basis by all or substantially all of the assets of AAM and each guarantor under the collateral agreement dated as of November 7, 2008, as amended and restated as of September 13, 2013. The revolving credit facility limits our ability to make certain investments, loans and guarantees, declare dividends or distributions on capital stock, redeem or repurchase capital stock and certain debt obligations, incur liens, incur indebtedness, enter into certain restrictive agreements, merge, make acquisitions or sell all or substantially all of our assets. 

The revolving credit facility provides back-up liquidity for our foreign credit facilities. We intend to use the availability of long-term financing under the revolving credit facility to refinance any current maturities related to such debt agreements that are not otherwise refinanced on a long-term basis in their local markets, except where otherwise reclassified to current portion of long-term debt on our Consolidated Balance Sheet.

In the first quarter of 2013, we terminated our class C loan facility of $72.8 million, which would have matured on June 30, 2013. Upon termination, we expensed $0.5 million of unamortized debt issuance costs related to the class C facility. We had been amortizing the debt issuance costs over the expected life of the borrowing.

9.25% NOTES In 2009, we issued $425.0 million of 9.25% senior secured notes due 2017 (9.25% Notes). The notes were issued at a discount of $5.5 million. Net proceeds from these notes were used for the repayment of certain indebtedness.

In 2012, we elected to exercise an option to redeem 10% of the original amount of our 9.25% Notes outstanding at a redemption price of 103% of the principal amount. This resulted in principal payments of $42.5 million and $1.3 million for the redemption premium, as well as payments of accrued interest in both 2012. We expensed $1.0 million in 2012 for the write-off of a proportional amount of unamortized debt discount and issuance costs related to this debt that we had been amortizing over the expected life of the borrowing.

Pursuant to the terms of our 9.25% Notes, in the fourth quarter of 2013, we voluntarily redeemed the remaining outstanding 9.25% Notes using the proceeds from the Term Facility and the issuance of the 5.125% Notes. This resulted in a principal payment of $340.0 million and $18.9 million for redemption premiums, as well as payments of accrued interest. We expensed $6.7 million in 2013 related to the write-off of the remaining unamortized debt discount and issuance costs related to our 9.25% Notes that we had been amortizing over the expected life of the borrowing.

7.875% NOTES In 2007, we issued $300.0 million of 7.875% senior unsecured notes due 2017 (7.875% Notes). Net proceeds from these notes were used for general corporate purposes, including payment of amounts outstanding under our revolving credit facility.

In the first quarter of 2013, we voluntarily purchased and redeemed $300.0 million of our 7.875% Notes, and paid accrued interest. Upon purchase and redemption, we expensed $8.5 million related to redemption premiums, $0.1 million of professional fees and unamortized debt issuance costs of $2.1 million related to this debt. We had been amortizing the debt issuance costs over the expected life of the borrowing.

47

AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

7.75% NOTES In 2011, we issued $200.0 million of 7.75% senior unsecured notes due 2019 (7.75% Notes). Net proceeds from these notes were used for general corporate purposes, including the repayment of certain amounts outstanding under our revolving credit facility.

6.625% NOTES In 2012, we issued $550.0 million of 6.625% senior unsecured notes due 2022 (6.625% Notes). Net proceeds from the 6.625% Notes were used to fund the purchase and redemption of $250.0 million of the outstanding 5.25% senior unsecured notes, including the payment of interest, the redemption of $42.5 million aggregate principal amount of our 9.25% Notes, certain pension obligations and for other general corporate purposes. We paid debt issuance costs of $8.9 million related to the 6.625% Notes in 2012.

6.25% NOTES In 2013, we issued $400.0 million of 6.25% senior unsecured notes due 2021 (6.25% Notes). Net proceeds from the 6.25% Notes were used to fund the purchase and redemption of our 7.875% Notes and for other general corporate purposes. We paid debt issuance costs of $6.6 million in 2013 related to the 6.25% Notes.

5.125% NOTES In the fourth quarter of 2013, we issued$200.0 millionof5.125%senior unsecured notes due 2019 (5.125%Notes). Net proceeds from the5.125%Notes were used to redeem the remaining$190.0 millionoutstanding under our9.25%Notes. We paid debt issuance costs related to the5.125%Notes of$0.2 million and $3.1 million in 2014 and 2013, respectively.

LEASES We lease certain facilities under capital leases expiring at various dates. The gross asset cost of our capital lease was $6.7 million at both December 31, 2014 and December 31, 2013. The net book value included in property, plant and equipment, net on the balance sheet was $5.0 million and $5.3 million at December 31, 2014 and 2013, respectively. The weighted-average interest rate on this capital lease obligation at December 31, 2014 was 8.9%.

We also lease certain manufacturing machinery and equipment, commercial office and production facilities, vehicles and other assets under operating leases expiring at various dates. In 2013 and 2012, we entered into various sale-leaseback transactions for equipment to be used in production starting in 2013. We received proceeds of $24.1 million and $12.1 million in 2013 and 2012, respectively, as a result of these transactions. Future minimum payments under noncancelable operating leases are as follows: $19.9 million in 2015, $18.5 million in 2016, $15.1 million in 2017, $7.9 million in 2018, and $3.5 million in 2019. Our total expense relating to operating leases was $23.6 million, $17.6 million and $9.0 million in 2014, 2013 and 2012, respectively.

FOREIGN CREDIT FACILITIES We utilize local currency credit facilities to finance the operations of certain foreign subsidiaries. These credit facilities, some of which are guaranteed by Holdings and/or AAM, Inc., expire at various dates through July 2019. At December 31, 2014, $38.9 million was outstanding under these facilities and an additional $51.1 million was available.

DEBT MATURITIES Aggregate maturities of long-term debt are as follows (in millions):

2015	$	35.2
2016	17.1
2017	19.1
2018	109.2
2019	403.4
Thereafter	952.4
Total	$	1,536.4

INTEREST EXPENSE AND INVESTMENT INCOME Interest expense was $99.9 million in 2014, $115.9 million in 2013 and $101.6 million in 2012. The decrease in interest expense in 2014 as compared to 2013 is primarily due to the decrease in our weighted-average interest rate for the full year 2014 as compared to full year 2013. The decrease is also driven by lower average outstanding borrowings in 2014 as compared to 2013. The increase in interest expense in 2013 as compared to 2012 reflects higher average outstanding borrowings, during those comparable periods.

48

AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

We capitalized interest of $5.8 million in 2014, $6.6 million in 2013 and $8.2 million in 2012. The weighted-average interest rate of our long-term debt outstanding at December 31, 2014 was 6.4% as compared to 6.3% and 7.9% at December 31, 2013 and 2012, respectively.

Investment income was $2.1 million in 2014 as compared to $0.6 million in both 2013 and 2012. Investment income includes interest and dividends earned on cash and cash equivalents and realized and unrealized gains and losses on our short-term investments during the period.

3. DERIVATIVES AND RISK MANAGEMENT

DERIVATIVE FINANCIAL INSTRUMENTS In the normal course of business, we are exposed to market risk associated with changes in foreign currency exchange rates and interest rates. To manage a portion of these inherent risks, we may purchase certain types of derivative financial instruments based on management's judgment of the trade-off between risk, opportunity and cost. We do not hold or issue derivative financial instruments for trading or speculative purposes. The ineffective portion of any hedge is included in current earnings. The impact of hedge ineffectiveness was not significant in any of the periods presented.

CURRENCY FORWARD CONTRACTS From time to time, we use foreign currency forward contracts to reduce the effects of fluctuations in exchange rates, primarily relating to the Mexican Peso, Euro, Swedish Krona, Polish Zloty and Pound Sterling. We had forward contracts with a notional amount of $99.3 million and $67.2 million outstanding at December 31, 2014 and 2013, respectively, that hedge our exposure to changes in foreign currency exchange rates for our payroll expenses, indirect inventory and other working capital items.

The following table summarizes the reclassification of pre-tax derivative gains (losses) into net income from accumulated other comprehensive income (loss):

	Location of Gain Reclassified into Net Income	Gain Reclassified During the Twelve Months Ended December 31,				Loss Expected to be Reclassified During the Next 12 Months
		2014		2013
		(in millions)
Currency forward contracts	Cost of Goods Sold	$	0.9	$	2.8	$	(7.2	)

CONCENTRATIONS OF CREDIT RISK In the normal course of business, we provide credit to customers. We periodically evaluate the creditworthiness of our customers and we maintain reserves for potential credit losses.

Sales to GM were approximately 68% of our consolidated net sales in 2014, 71% in 2013, and 73% in 2012 . Accounts and other receivables due from GM were $343.1 million at year-end 2014 and $278.5 million at year-end 2013. Sales to FCA US LLC, formerly known as Chrysler Group LLC, (Chrysler) were approximately 18% of our consolidated net sales in 2014, 12% in 2013 and 10% in 2012. Accounts receivable due from Chrysler were $99.3 million at year-end 2014 and $85.9 million at year-end 2013. No other single customer accounted for more than 10% of our consolidated net sales in any year presented.

In addition, our total GM postretirement cost sharing asset was $287.8 million as of December 31, 2014 and $255.9 million as of December 31, 2013. See Note 5 - Employee Benefit Plans for more detail on this cost sharing asset.

We diversify the concentration of invested cash and cash equivalents among different financial institutions and we monitor the selection of counterparties to other financial instruments to avoid unnecessary concentrations of credit risk.

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AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

4. FAIR VALUE

The fair value accounting guidance defines fair value as “the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date.”  The definition is based on an exit price rather than an entry price, regardless of whether the entity plans to hold or sell the asset.  This guidance also establishes a fair value hierarchy to prioritize inputs used in measuring fair value as follows:

• Level 1:  Observable inputs such as quoted prices in active markets;

• Level 2:  Inputs, other than quoted prices in active markets, that are observable either directly or indirectly; and

• Level 3:  Unobservable inputs in which there is little or no market data, which require the reporting entity to develop its own assumptions.

FINANCIAL INSTRUMENTSThe estimated fair values of our financial assets and liabilities that are recognized at fair value on a recurring basis, using available market information and other observable data are as follows:

	December 31, 2014				December 31, 2013
	Carrying Amount		Fair Value		Carrying Amount		Fair Value		Input
	(in millions)				(in millions)
Balance Sheet Classification
Cash equivalents	$	35.3	$	35.3	$	6.1	$	6.1	Level 1
Prepaid expenses and other
Currency forward contracts	—		—		0.7		0.7		Level 2
Other accrued expenses
Currency forward contracts	8.3		8.3		0.4		0.4		Level 2
Other long-term liabilities
Currency forward contracts	0.1		0.1		—		—		Level 2

The carrying values of our cash, accounts receivable, accounts payable and accrued liabilities approximate their fair values due to the short-term maturities of these instruments.  The carrying values of our borrowings under the foreign credit facilities approximate their fair values due to the frequent resetting of the interest rates.  We estimated the fair value of our outstanding debt using available market information and other observable data to be as follows:

	December 31, 2014				December 31, 2013
	Carrying Amount		Fair Value		Carrying Amount		Fair Value		Input
	(in millions)				(in millions)
Revolving Credit Facility	$	—	$	—	$	—	$	—	Level 2
Term Facility	142.5		141.1		150.0		147.8		Level 2
7.75% Notes	200.0		224.0		200.0		227.5		Level 2
6.625% Notes	550.0		583.0		550.0		578.9		Level 2
6.25% Notes	400.0		419.0		400.0		423.0		Level 2
5.125% Notes	200.0		202.6		200.0		206.0		Level 2

Investments in our defined benefit pension plans are stated at fair value. See Note 5 - Employee Benefit Plans for additional fair value disclosures of our pension plan assets.

LONG-LIVED ASSETS In 2012 as part of our impairment analysis, we were required to measure the fair value of certain long-lived assets.  We considered the expected future use of certain long-lived assets remaining at our Detroit Manufacturing Complex (DMC). Assets that were not to be redeployed to other AAM facilities were determined to be fully impaired.

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AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

The following table summarizes impairments of long-lived assets measured at fair value on a nonrecurring basis subsequent to initial recognition:

Balance Sheet Classification	Fair Value Measurements using Level 3 Inputs		Asset Impairment Recorded in Twelve Months ended December 31, 2012
Property, plant and equipment, net	$	—	$	5.8

In 2012, we reassessed the expected future use of certain assets remaining at DMC that were previously leased assets that had been purchased in 2011 for $18.6 million. As a result, we recorded an impairment charge of $5.8 million related to the assets that we no longer intended to redeploy and use at another AAM facility.

5. EMPLOYEE BENEFIT PLANS

PENSION AND OTHER POSTRETIREMENT DEFINED BENEFIT PLANS We sponsor various qualified and non-qualified defined benefit pension plans for our eligible associates. We also maintain hourly and salaried benefit plans that provide postretirement medical, dental, vision and life insurance benefits (OPEB) to our eligible retirees and their dependents in the U.S.

AAM and GM share proportionally in the cost of OPEB for eligible retirees based on the length of service an employee had with AAM and GM.  We have included in our OPEB obligation the amounts expected to be received pursuant to this agreement of $287.8 million and $255.9 million at December 31, 2014 and December 31, 2013, respectively. We have also recorded a corresponding asset for these amounts on our Consolidated Balance Sheet, $13.3 million that is classified as a current asset and $274.5 million that is classified as a noncurrent asset as of December 31, 2014.

Actuarial valuations of our benefit plans were made as of December 31, 2014 and 2013. The principal weighted-average assumptions used in the year-end valuation of our U.S. and U.K. plans appear in the following table. The U.S. discount rates are based on an actuarial review of a hypothetical portfolio of long-term, high quality corporate bonds matched against the expected payment stream for each of our plans. The U.K. discount rate is based on a review of long-term bonds, in consideration of the average duration of plan liabilities. The assumptions for expected return on plan assets are based on future capital market expectations for the asset classes represented within our portfolios and a review of long-term historical returns. The rates of increase in compensation and health care costs are based on current market conditions, inflationary expectations and historical information.

	Pension Benefits												OPEB
	2014				2013				2012				2014		2013		2012
	U.S.		U.K		U.S.		U.K		U.S.		U.K.
Discount rate	4.10	%	3.70	%	5.00	%	4.50	%	4.10	%	4.30	%	4.15	%	4.95	%	4.05	%
Expected return on plan assets	7.50	%	5.00	%	7.50	%	5.15	%	7.50	%	4.35	%	N/A		N/A		N/A
Rate of compensation increase	4.00	%	3.30	%	4.00	%	3.60	%	4.00	%	3.15	%	4.00	%	4.00	%	4.00	%

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AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

The accumulated benefit obligation for all defined benefit pension plans was $723.9 million and $744.5 million at December 31, 2014 and December 31, 2013, respectively. As of December 31, 2014, the accumulated benefit obligation for our underfunded defined benefit pension plans was $586.5 million, the projected benefit obligation was $598.3 million and the fair value of assets for these plans was $496.3 million. The following table summarizes the changes in projected benefit obligations and plan assets and reconciles the funded status of the benefit plans, which is the net benefit plan liability:

	Pension Benefits						OPEB
	December 31,						December 31,
	2014			2013			2014			2013
	(in millions)						(in millions)
Change in benefit obligation
Benefit obligation at beginning of year	$	755.4		$	842.8		$	577.9		$	601.3
Service cost	3.5			3.4			0.3			0.4
Interest cost	36.1			33.8			15.3			13.2
Plan amendments	—			—			—			(8.1		)
Actuarial loss (gain)	119.3			(92.6		)	41.2			(0.7		)
Change in GM portion of OPEB obligation	—			—			31.8			(17.0		)
Participant contributions	0.4			0.4			—			—
Settlements	(131.1		)	—			—			—
Benefit payments	(36.5		)	(35.3		)	(11.8		)	(11.2		)
Currency fluctuations	(8.3		)	2.9			—			—
Net change	(16.6		)	(87.4		)	76.8			(23.4		)
Benefit obligation at end of year	$	738.8		$	755.4		$	654.7		$	577.9
Change in plan assets
Fair value of plan assets at beginning of year	$	713.4		$	695.4		$	—		$	—
Actual return on plan assets	77.2			49.2			—			—
Employer contributions	1.9			0.8			11.8			11.2
Participant contributions	0.4			0.4			—			—
Benefit payments	(36.5		)	(35.3		)	(11.8		)	(11.2		)
Settlements	(104.2		)	—			—			—
Currency fluctuations	(8.5		)	2.9			—			—
Net change	(69.7		)	18.0			—			—
Fair value of plan assets at end of year	$	643.7		$	713.4		$	—		$	—

During 2014, the society of actuaries issued updated mortality tables for our U.S. benefit plans. These new mortality tables increased our projected benefit obligations for our U.S. pension and OPEB plans by $25.2 million and $19.0 million, respectively.

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AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

Amounts recognized in our balance sheets are as follows:

	Pension Benefits						OPEB
	December 31,						December 31,
	2014			2013			2014			2013
	(in millions)						(in millions)
Noncurrent assets	$	6.9		$	9.3		$	—		$	—
Current liabilities	(3.0		)	(2.3		)	(29.6		)	(30.8		)
Noncurrent liabilities	(99.0		)	(49.0		)	(625.1		)	(547.1		)
Net liability	$	(95.1	)	$	(42.0	)	$	(654.7	)	$	(577.9	)

Pre-tax amounts recorded in accumulated other comprehensive income (loss) (AOCI), not yet recognized in net periodic benefit cost as of December 31, 2014 and 2013, consists of:

	Pension Benefits						OPEB
	December 31,						December 31,
	2014			2013			2014			2013
	(in millions)						(in millions)
Net actuarial gain (loss)	$	(215.3	)	$	(194.3	)	$	(35.7	)	$	4.9
Net prior service credit	0.7			0.8			15.4			18.1
Total amounts recorded	$	(214.6	)	$	(193.5	)	$	(20.3	)	$	23.0

The components of net periodic benefit cost are as follows:

	Pension Benefits									OPEB
	2014			2013			2012			2014			2013			2012
	(in millions)									(in millions)
Service cost	$	3.5		$	3.4		$	3.1		$	0.3		$	0.4		$	0.4
Interest cost	36.1			33.8			35.1			15.3			13.2			15.1
Expected asset return	(48.4		)	(45.8		)	(34.7		)	—			—			—
Amortized actuarial loss	5.4			8.9			7.8			0.5			0.9			0.6
Amortized prior service cost (credit)	(0.1		)	5.4			0.5			(2.7		)	(1.8		)	(2.0		)
Special and contractual
termination benefits	—			—			12.8			—			—			16.2
Curtailment gain	—			—			—			—			—			(21.8		)
Settlement charge (gain)	35.5			—			—			—			—			(5.2		)
Net periodic benefit cost	$	32.0		$	5.7		$	24.6		$	13.4		$	12.7		$	3.3

Our postretirement cost sharing asset from GM is measured on the same basis as the portion of the obligation to which it relates. The actuarial gains and losses related to the GM portion of the OPEB obligation are recognized immediately in the Consolidated Statement of Income as an offset against the gains and losses related to the change in the corresponding GM postretirement cost sharing asset. These items are presented net in the change in benefit obligation and net periodic benefit cost components disclosed above. Remaining actuarial gains and losses are deferred and amortized over the expected future service periods of the active participants.

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AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

The estimated net actuarial loss and prior service credit for the defined benefit pension plans that is expected to be amortized from AOCI into net periodic benefit cost in 2015 are $6.9 million and $0.1 million, respectively. The estimated net actuarial loss and prior service credit for the other defined benefit postretirement plans that is expected to be amortized from AOCI into net periodic benefit cost in 2015 are $0.7 million and $2.7 million, respectively.

Formeasurement purposes, a weighted average annual increase in the per-capita cost of covered health care benefits of 7.0% was assumed for 2015. The rate was assumed to decrease gradually to 5.0% by 2023 and to remain at that level thereafter. Health care cost trend rates have a significant effect on the amounts reported for the health care plans. A 1.0% increase in the assumed health care cost trend rate would have increased total service and interest cost in 2014 and the postretirement obligation, net of GM cost sharing, at December 31, 2014 by $1.6 million and $41.3 million, respectively. A 1.0% decrease in the assumed health care cost trend rate would have decreased total service and interest cost in 2014 and the postretirement obligation, net of GM cost sharing, at December 31, 2014 by $1.3 million and $34.1 million, respectively.

The expected future pension and other postretirement benefits to be paid, net of GM cost sharing, for each of the next five years and in the aggregate for the succeeding five years thereafter are as follows: $55.3 million in 2015; $55.4 million in 2016; $56.4 million in 2017; $56.6 million in 2018; $56.9 million in 2019 and $293.6 million for 2020 through 2024. These amounts were estimated using the same assumptions that were used to measure our 2014 year-end pension and OPEB obligations and include an estimate of future employee service.

Contributions In 2012, AAM and the Pension Benefit Guaranty Corporation entered into an agreement regarding any liability that may have arisen under the Employee Retirement Income Security Act of 1974 in connection with the closures of DMC and CKMF. As part of this agreement, in 2012, we contributed $114.7 million in excess of our statutory minimum to our U.S. hourly pension plan.

Due to our significant pension contributions made in 2012, we do not expect to make any cash payments in 2015 to satisfy our regulatory funding requirements. We expect our cash outlay, net of GM cost sharing, for OPEB to be approximately $16 million in 2015.

Labor relations In 2012, we recorded a gain of $21.8 million in cost of goods sold for the curtailment of certain OPEB. This resulted primarily from the reduction in expected future OPEB related to the DMC and CKMF hourly associates who have terminated employment from AAM as a result of our plant closures. These curtailment gains resulted in an increase in our accumulated other comprehensive loss of $21.8 million pre-tax.

Also in 2012, we notified hourly associates of the termination of a benefit plan, which provided legal services to certain eligible hourly associates represented by the International UAW. As a result of terminating this plan, we recorded a settlement gain of $5.2 million in cost of goods sold in 2012. Recognition of this settlement gain reduced postretirement benefits and other long-term liabilities by $4.7 million and also reduced our accumulated other comprehensive loss by $0.5 million pre-tax.

Terminated vested lump sum payout offer On September 22, 2014, we announced a plan to offer a voluntary one-time lump sum payment option to certain eligible terminated vested participants in our U.S. pension plans that, if accepted, would settle our pension obligations to them (“AAM Pension Payout Offer”). The lump sum settlements, which were paid from plan assets, reduced our liabilities and administrative costs going forward.

The AAM Pension Payout Offer was open from October 2, 2014 through November 12, 2014 to approximately 6,000 of our 14,000 total U.S. pension plan participants. In addition to the lump sum payment option, the AAM Pension Payout Offer allowed participants to commence payment of their monthly benefits early.

In total, 3,335 participants accepted the offer and we made a one-time lump sum payment from our pension trust of $104.2 million on December 19, 2014. As a result of this settlement, we remeasured the assets and liabilities of our U.S. pension plans, which reduced our projected benefit obligation by $131.1 million and resulted in a non-cash charge of $35.5 million in the fourth quarter of 2014 related to the accelerated recognition of certain deferred losses.

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AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

Amendments to pension and OPEB plans and contractual termination benefits In the third quarter of 2013, we remeasured the AAM Supplemental Executive Retirement Plan (SERP) due to the passing of our Co-Founder and former Executive Chairman of the Board of Directors. As a result of this remeasurement, we recorded $4.7 million in selling, general and administrative expense related to the acceleration of prior service cost.

As a result of our election to apply the provisions of Moving Ahead for Progress in the 21st Century Act (MAP-21), in addition to certain actions we took in 2012, we agreed to provide pension and postretirement benefits to certain eligible UAW associates whose employment had been terminated in connection with the DMC and CKMF plant closures. In 2012, we recorded $28.7 million in cost of goods sold, for these pension and postretirement benefits. These incremental pension and postretirement benefits were also agreed to in connection with the lawsuit filed by the International UAW against AAM. See Note 9 - Commitments and Contingencies for more detail on this lawsuit.

Pension plan assets The weighted-average asset allocations of our pension plan assets at December 31, 2014 and 2013 appear in the following table. The asset allocation for our plans is developed in consideration of the demographics of the plan participants and expected payment stream of the benefit obligation.

	U.S.					U.K.
					Target					Target
	2014		2013		Allocation	2014		2013		Allocation
Equity securities	33.1	%	42.5	%	30% - 65%	28.7	%	30.7	%	25% - 35%
Fixed income securities	47.3		48.5		35% - 55%	61.1		59.0		55% - 65%
Hedge funds	18.3		8.8		0% - 20%	10.1		10.2		5% - 15%
Cash	1.3		0.2		0% - 5%	0.1		0.1		0% - 5%
Total	100.0	%	100.0	%		100.0	%	100.0	%

The primary objective of our pension plan assets is to provide a source of retirement income for participants and beneficiaries. Our primary financial objectives for the pension plan assets have been established in conjunction with a comprehensive review of our current and projected financial requirements. These objectives include having the ability to pay all future benefits and expenses when due, maintaining flexibility and minimizing volatility. These objectives are based on a long-term investment horizon.

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AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

Postretirement Benefit Plan AssetsInvestments in our defined benefit plans are stated at fair value. Level 1 assets are valued using quoted market prices that represent the asset value of the shares held by the trusts. The level 2 assets are investments in pooled funds, which are valued using a model to reflect the valuation of their underlying assets that are publicly traded with observable values. The fair value of our level 3 postretirement benefit plan assets are measured by compiling the portfolio holdings and independently valuing the securities in those portfolios. The fair values of our pension plan assets are as follows:

December 31, 2014
Asset Categories	Level 1		Level 2		Level 3		Total
	(in millions)
Cash & Cash Equivalents	$	6.7	$	—	$	—	$	6.7
Equity
U.S. Large Cap	87.3		—		—		87.3
U.S. Small/Mid Cap	25.2		—		—		25.2
World Equity	94.2		—		—		94.2
Fixed Income Securities
Government & Agencies	67.9		58.8		—		126.7
Corporate Bonds - Investment Grade	139.9		—		—		139.9
Corporate Bonds - Non-investment Grade	31.9		—		—		31.9
Emerging Market Debt	19.0		—		—		19.0
Other	7.2		—		—		7.2
Hedge Funds
Property Funds	—		—		48.3		48.3
Multi Strategy Hedge Fund	—		—		57.3		57.3
Total Plan Assets	$	479.3	$	58.8	$	105.6	$	643.7
December 31, 2013
Asset Categories	Level 1		Level 2		Level 3		Total
	(in millions)
Cash & Cash Equivalents	$	1.5	$	—	$	—	$	1.5
Equity
U.S. Large Cap	128.0		—		—		128.0
U.S. Small/Mid Cap	49.4		—		—		49.4
World Equity	109.3		—		—		109.3
Fixed Income Securities
Government & Agencies	70.5		63.0		—		133.5
Corporate Bonds - Investment Grade	167.1		—		—		167.1
Corporate Bonds - Non-investment Grade	25.8		—		—		25.8
Emerging Market Debt	17.4		—		—		17.4
Other	16.9		—		—		16.9
Hedge Funds
Property Funds	—		—		7.1		7.1
Multi Strategy Hedge Fund	—		—		57.4		57.4
Total Plan Assets	$	585.9	$	63.0	$	64.5	$	713.4

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AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

The changes in the fair value of our level 3 assets in the Property Funds and Multi Strategy Hedge Fund are as follows:

	December 31,
	2014		2013
	(in millions)
Beginning balance	$	64.5	$	47.6
Actual return on plan assets:
Relating to assets still held at the reporting date	3.3		3.5
Purchases, sales and settlements, net	37.8		13.4
Ending balance	$	105.6	$	64.5

DEFINED CONTRIBUTION PLANS Most of our salaried U.S. associates are eligible to participate in voluntary savings plans. Our maximum match is 50% of eligible salaried associates' contribution up to 10% of their eligible salary. Matching contributions amounted to $3.9 million in 2014, $3.9 million in 2013 and $3.3 million in 2012. U.S. salaried associates are eligible to receive an additional annual retirement contribution (ARC) benefit between 3% to 5% of eligible salary, depending on years of service. We made ARC contributions of $4.9 million, $4.6 million and $4.4 million in 2014, 2013 and 2012, respectively.

Certain UAW represented associates at our original U.S. locations are eligible for a Company match on associate contributions made to the voluntary savings plans. Our maximum match is 25% of hourly associates' contribution up to the first 6% of their contributions. Matching contributions amounted to $0.1 million in 2014, 2013 and 2012. Certain UAW represented associates are also eligible to receive an ARC benefit of 5% of eligible wages, which also began in 2009. We made ARC contributions of $2.6 million in 2014, $1.9 million in 2013 and $1.6 million in 2012 related to these associates.

DEFERRED COMPENSATION PLAN Certain U.S. associates are eligible to participate in a non-qualified deferred compensation plan. Payments of $1.2 million, $6.1 million and $0.8 million have been made in 2014, 2013 and 2012, respectively, to eligible associates that have elected distributions. Included in these payments, in 2013, was a distribution of $5.6 million to the beneficiary of the plan upon the passing of our Co-Founder and former Executive Chairman of the Board of Directors. This payment resulted in a $5.6 million reduction in postretirement benefits and other long-term liabilities on our Consolidated Balance Sheet and was partially offset by proceeds of $5.0 million, which AAM received as the beneficiary of a key man life insurance policy in 2013.

At December 31, 2014 and 2013, our deferred compensation liability was $5.6 million and $6.2 million, respectively. Due to the changes in the value of this deferred compensation plan we increased our liability by $0.3 million, $0.8 million and $1.3 million in 2014, 2013 and 2012, respectively.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

6. STOCK-BASED COMPENSATION

At December 31, 2014, we had grants outstanding under stock incentive compensation plans approved by our stockholders. Under these plans, a total of 18.5 million shares have been authorized for issuance to our directors, officers and certain other associates in the form of options, unvested restricted stock or other awards that are based on the value of our common stock. Shares available for future grants at December 31, 2014 were 2.2 million. The current stock plan will expire in April 2022.

STOCK OPTIONS Under the terms of the plans, stock options are granted at the market price of the stock on the grant date. The contractual term of outstanding stock options is 10 years. We issue new shares to satisfy stock-based awards.

Stock option awards become exercisable in three approximately equal annual installments beginning one year from the date of grant.

The following table summarizes activity relating to our stock options:

			Weighted-
	Number of		Average Exercise
	Shares		Price Per Share
	(in millions, except per share data)
Outstanding at January 1, 2012	3.9		$	26.95
Options granted	0.2		9.19
Options exercised	(0.1	)	2.81
Options canceled	(1.0	)	25.12
Outstanding at December 31, 2012	3.0		$	27.08
Options granted	—		—
Options exercised	(0.1	)	10.59
Options canceled	(0.9	)	24.28
Outstanding at December 31, 2013	2.0		$	29.22
Options granted	—		—
Options exercised	(0.1	)	13.87
Options canceled	(1.0	)	37.70
Outstanding at December 31, 2014	0.9		$	20.66
Exercisable at December 31, 2012	2.8		$	28.02
Exercisable at December 31, 2013	2.0		$	29.22
Exercisable at December 31, 2014	0.9		$	20.66

As of December 31, 2014, there were no unvested stock options. The total intrinsic value of options outstanding and exercisable as of December 31, 2014 was $3.4 million. The total intrinsic value of stock options exercised was $0.5 million in 2014, $0.8 million in 2013 and $0.5 million in 2012.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

The following is a summary of the range of exercise prices for stock options that are outstanding and exercisable at December 31, 2014:

		Weighted-				Weighted-
Range of	Stock Options	Average Exercise		Weighted-Average	Stock Options	Average Exercise
Exercise Prices	Outstanding	Price Per Share		Contractual Life	Exercisable	Price Per Share
	(in millions, except per share data)			(in years)	(in millions, except per share data)
$9.19 - $15.58	0.4	$	13.22	3.2	0.4	$	13.22
$19.54 - $26.65	0.5	26.05		1.2	0.5	26.05
	0.9	$	20.66	2.0	0.9	$	20.66

OTHER STOCK-BASED COMPENSATION We awarded performance accelerated restricted stock, restricted stock and restricted stock units (PARS, RS and RSUs, respectively). The total amount of compensation expense associated with the RSUs settled in cash is recorded as an accrued liability when incurred while the total amount of compensation expense associated with PARS, RS and RSUs settled in stock is recorded to paid-in-capital. The PARS and RSUs vest over three years contingent upon the satisfaction of future financial performance targets specified by the plan and the RS vests over three years. The unearned compensation is expensed over the expected vesting period.

The following table summarizes activity relating to our PARS, RS and RSUs:

			Weighted Average
	Number of		Grant Date Fair
	Shares/Units		Value per Share/Unit
	(in millions, except per share data)
Outstanding at January 1, 2012	1.6		$	10.74
Granted	1.0		10.31
Vested	(1.4	)	10.19
Canceled	(0.1	)	26.02
Outstanding at December 31, 2012	1.1		$	11.08
Granted	0.9		12.79
Vested	(0.7	)	11.06
Canceled	—		—
Outstanding at December 31, 2013	1.3		$	12.24
Granted	0.5		19.58
Vested	(0.1	)	13.95
Canceled	(0.1	)	12.76
Outstanding at December 31, 2014	1.6		$	14.54

As of December 31, 2014, unrecognized compensation cost related to unvested RSUs totaled $10.4 million. The weighted average period over which this cost is expected to be recognized is approximately one year. In 2014 and 2013, the total fair market value of RS and RSUs vested was $1.7 million and $13.8 million, respectively.

We made cash payments of $0.2 million related to vested RSUs in 2012.

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AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

PERFORMANCE SHARES As of December 31, 2014, we have performance shares (PS) outstanding under our 2012 Omnibus Incentive Plan. We granted performance shares payable in stock to officers which vest in full over a three-year performance period. The payout of these stock-based awards is based equally on a total shareholder return (TSR) measure and AAM's three-year earnings before interest, taxes and depreciation and amortization margin (EBITDA). The TSR metric compares our TSR over the three-year performance period relative to the TSR of our pre-defined competitor peer group. Share price appreciation and dividends paid are measured over the performance period to determine TSR. As these awards are settled in stock, the compensation expense booked ratably over the vesting period is recorded to paid-in-capital.

The following table summarizes activity relating to our performance shares:

		Weighted Average
	Number of	Grant Date Fair
	Shares	Value per Share
EBITDA	(in millions, except per share data)
Outstanding at January 1, 2014	—	$	—
Granted	0.2	27.66
Vested	—	—
Canceled	—	—
Outstanding at December 31, 2014	0.2	$	27.66
TSR
Outstanding at January 1, 2014	—	$	—
Granted	0.2	21.11
Vested	—	—
Canceled	—	—
Outstanding at December 31, 2014	0.2	$	21.11

We estimated the fair value of our performance shares related to EBITDA on the date of grant using our estimated three-year EBITDA margin, based on AAM's budget and long-range plan assumptions at that time. We estimated the fair value of our performance shares related to TSR on the date of grant using the Monte Carlo simulation approach. The Monte Carlo simulation approach utilizes inputs on volatility assumptions, risk free rates, the price of the Company’s and our competitor peer group's common stock and their correlation as of each valuation date. Volatility assumptions are based on historical and implied volatility measurements.

Based on the current fair value, the estimated unrecognized compensation cost related to unvested PS totaled $5.3 million, as of December 31, 2014. The weighted average period over which this cost is expected to be recognized is approximately two years.

PERFORMANCE AWARDS As of December 31, 2014, we have performance awards outstanding under our 2012 Omnibus Incentive Plan, which are fully vested. We granted performance awards payable in cash to our officers and executives which vest in full over a three year performance period. The payout of these awards is based on a TSR measure that compares our TSR over the three-year performance period relative to the TSR of our pre-defined competitor peer group. Share price appreciation and dividends paid is measured over the performance period to determine TSR.

According to the applicable accounting guidance, these awards are considered to be stock-based compensation because the final payout amount is based “at least in part” on the price of our shares. However, as these awards are settled in cash, they are determined to be liability awards and have been remeasured at the end of each reporting period until settlement. The fair value of the performance awards was calculated on a quarterly basis using the Monte Carlo simulation approach, described above, and the liability was adjusted accordingly based on changes to the fair value and the percentage of time vested.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

We recognized compensation expense associated with the performance awards of approximately $1.4 million in 2014, $7.9 million in 2013 and $3.0 million in 2012. We have a liability of $3.7 million recorded as of December 31, 2014, which will be paid out in the first quarter of 2015. As of December 31, 2014, there is no unrecognized compensation cost related to the performance awards.

7. INCOME TAXES

Income before income taxes for U.S. and non-U.S. operations was as follows:

	2014		2013			2012
	(in millions)
U.S. income (loss)	$	12.0	$	(23.8	)	$	(6.0	)
Non - U.S. income	164.7		110.1			37.5
Total income before income taxes	$	176.7	$	86.3		$	31.5

The following is a summary of the components of our provisions for income taxes:

	2014			2013			2012
	(in millions)
Current
Federal	$	0.6		$	(1.3	)	$	(3.3	)
Other state and local	0.1			0.1			1.1
Foreign	44.2			12.1			10.2
Total current	$	44.9		$	10.9		$	8.0
Deferred
Federal	$	(11.6	)	$	(9.3	)	$	(347.1	)
Foreign	0.4			(9.8		)	3.9
Total deferred	(11.2		)	(19.1		)	(343.2		)
Total income tax expense (benefit)	$	33.7		$	(8.2	)	$	(335.2	)

The following is a reconciliation of our provision for income taxes to the expected amounts using statutory rates:

	2014		2013		2012
Federal statutory	35.0	%	35.0	%	35.0	%
Foreign income taxes	(25.1	)	(48.5	)	(85.0	)
Change in enacted tax rate	—		(9.9	)	—
State and local	0.1		0.2		3.5
Tax Credits	(11.4	)	—		—
Valuation allowance	4.5		12.4		(985.0	)
U.S. tax on unremitted foreign earnings	1.9		(0.2	)	(29.5	)
Uncertain tax positions	13.0		(0.5	)	(5.2	)
Other	1.1		2.0		2.0
Effective income tax rate	19.1	%	(9.5	)%	(1,064.2	)%

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

Our income tax expense and effective tax rate for 2014 and 2013 primarily reflect favorable foreign tax rates, along with our inability to realize a tax benefit for current foreign losses. In 2014, we recorded tax expense of $23.1 million for changes to prior year uncertain tax positions related to transfer pricing and expense of $3.4 million for a change in estimate for U.S. tax on unremitted foreign earnings. We also recorded a net tax benefit of $20.1 million in 2014 related to our ability to utilize tax credits in future periods resulting in the recognition of a deferred tax asset.

In 2013, new Mexican tax reform was enacted that, among other things, increased the tax rate related to Maquiladora Companies from 17.5% to 30%. We recorded a tax benefit of $8.5 million as a result of revaluing our deferred tax assets at the newly enacted rate. In 2013, we recorded tax expense of $4.8 million relating to changes in estimates in the U.S. and certain foreign jurisdictions. Our income tax benefit and effective tax rate for 2013 also reflects the impact of recording a tax benefit of $1.5 million relating to the release of a prior year unrecognized tax benefit due to the expiration of the applicable statute of limitations and a tax benefit of $3.3 million relating to an election we made in 2013 regarding the treatment of foreign exchange gains and losses in a foreign jurisdiction. During 2013, we also settled various income tax audits resulting in a reduction of our liability for unrecognized income tax benefits of $8.4 million and a cash payment of $4.7 million.

In 2012, our business returned to a position of cumulative profitability on a pre-tax basis, considering our operating results for the three years ended December 31, 2012. We concluded that this record of cumulative profitability in recent years, in addition to the restructuring of our U.S. operations and our long range forecast showing continued profitability, provided sufficient positive evidence that our net U.S. federal tax benefits more likely than not would be realized. Accordingly, in 2012, we released the valuation allowance against our net federal deferred assets for entities in the U.S., resulting in a $337.5 million benefit in our 2012 provision for income taxes. Our income tax benefit and effective tax rate in 2012 reflect the impact of this valuation allowance reversal. Our income tax expense and effective tax rate for 2012 also reflect a net tax expense of $1.3 million related to the amendment of state income tax returns as a result of the settlement of federal income tax audits for the tax years 2004 through 2007.

As of December 31, 2014 and 2013, we have refundable income taxes of $5.6 million and $4.9 million, respectively, classified as prepaid expenses and other on our Consolidated Balance Sheet. We also have income taxes payable of $3.0 million and $2.6 million classified as other accrued expenses on our Consolidated Balance Sheet as of December 31, 2014 and 2013, respectively. As of December 31, 2014 and 2013, we have accrued value added tax payable of $36.1 million and $38.3 million, respectively, classified as other accrued expenses on our Consolidated Balance Sheet.

The following is a summary of the significant components of our deferred tax assets and liabilities:

	December 31,
	2014			2013
	(in millions)
Current deferred tax assets
Employee benefits	$	26.0		$	14.5
Inventory	7.5			8.0
Prepaid taxes and other	16.9			24.6
Valuation allowance	(10.2		)	(10.7		)
Total current deferred tax assets	$	40.2		$	36.4
Current deferred tax liabilities
Unrealized foreign exchange gain and other	(0.1		)	(0.1		)
Current deferred tax asset, net	$	40.1		$	36.3

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AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

Current deferred tax assets and liabilities recognized in our Consolidated Balance Sheets are as follows:

	December 31,
	2014		2013
	(in millions)
U.S. federal and state deferred tax asset, net	$	27.0	$	17.1
Other foreign deferred tax asset, net	13.1		19.2
Current deferred tax asset, net	$	40.1	$	36.3

The following is a summary of the significant components of our noncurrent deferred tax assets and liabilities:

	December 31,
	2014			2013
	(in millions)
Noncurrent deferred tax assets
Employee benefits	$	193.9		$	161.5
Net operating loss (NOL) carryforwards	104.7			176.9
Tax credit carryforwards	69.8			82.9
Capital allowance carryforwards	14.4			16.0
Fixed assets	6.6			10.3
Deferred revenue	12.6			15.7
Capitalized expenditures	111.2			113.6
Other	2.3			2.9
Valuation allowances	(146.7		)	(153.0		)
Noncurrent deferred tax assets	368.8			426.8
Noncurrent deferred tax liabilities
U.S. tax on unremitted foreign earnings	—			(85.0		)
Fixed assets and other	(9.1		)	(9.8		)
Noncurrent deferred tax asset, net	$	359.7		$	332.0

Noncurrent deferred tax assets and liabilities recognized in our Consolidated Balance Sheets are as follows:

	December 31,
	2014			2013
	(in millions)
U.S. federal and state deferred tax asset, net	$	362.2		$	337.2
Other foreign deferred tax asset (liability), net	(2.5		)	(5.2		)
Noncurrent deferred tax asset, net	$	359.7		$	332.0

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AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

DEFERRED INCOME TAX ASSETS AND LIABILITIES AND VALUATION ALLOWANCES The deferred income tax assets and liabilities previously summarized reflect the impact of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the basis of such assets and liabilities as measured by tax laws. As of December 31, 2014 and December 31, 2013, we had deferred tax assets from domestic and foreign NOL and tax credit carryforwards of $188.9 million and $275.8 million, respectively. Approximately $85.6 million of the deferred tax assets at December 31, 2014 relate to tax credits that can be carried forward indefinitely with the remainder having carryover periods of 5 to 20 years. The deferred tax asset relating to U.S. net operating losses and tax credit carryforwards as of December 31, 2014 is lower than the actual amount reported and expected to be reported on our U.S. tax returns by $3.2 million. This difference is the result of tax deductions in excess of financial statement amounts for stock based compensation. When this amount is realized, we will record a credit to additional paid in capital and reduce our income taxes payable.

Accounting guidance for income taxes requires a deferred tax liability be established for the U.S. tax impact of undistributed earnings of foreign subsidiaries unless it can be shown that these earnings will be permanently reinvested outside the U.S. Deferred income taxes have not been provided on $502.2 million of undistributed earnings of certain foreign subsidiaries as such amounts are considered permanently reinvested. The remittance of these undistributed earnings may subject us to U.S. income taxes and certain foreign withholding taxes at the time of remittance, however, the determination of the amount of unrecognized deferred tax liability relating to the remittance of undistributed earnings is not practicable.

In accordance with the accounting guidance for income taxes,we estimate whether recoverability of our deferred tax assets is “more likely than not,” based on forecasts of taxable income in the related tax jurisdictions.  In this estimate, we use historical results, projected future operating results based upon approved business plans, eligible carry forward periods, tax planning opportunities and other relevant considerations.  

As described above, in 2012, we released the valuation allowance against our net federal deferred tax assets for entities in the United States, resulting in a $337.5 million benefit in our 2012 provision for income taxes. As of December 31, 2014 and December 31, 2013, we have a valuation allowance of $156.9 million and $163.7 million, respectively, related to net deferred tax assets in several foreign jurisdictions and U.S. state and local jurisdictions.

UNRECOGNIZED INCOME TAX BENEFITS To the extent our uncertain tax positions do not meet the “more likely than not” threshold, we have derecognized such positions. To the extent our uncertain tax positions meet the “more likely than not” threshold, we have measured and recorded the highest probable benefit, and have established appropriate reserves for benefits that exceed the amount likely to be sustained upon examination.

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AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

A reconciliation of the beginning and ending amounts of unrecognized income tax benefits is as follows:

	Unrecognized Income Tax			Interest and
	Benefits			Penalties
	(in millions)
Balance at January 1, 2012	$	25.8		$	7.4
Increase in prior year tax positions	—			2.8
Decrease in prior year tax positions	(1.1		)	—
Increase in current year tax positions	0.4			—
Settlement	(4.4		)	—
Balance at December 31, 2012	$	20.7		$	10.2
Increase in prior year tax positions	6.1			0.1
Decrease in prior year tax positions	(4.4		)	(6.2		)
Increase in current year tax positions	4.0			—
Settlement	(4.7		)	—
Balance at December 31, 2013	$	21.7		$	4.1
Increase in prior year tax positions	10.5			8.1
Decrease in prior year tax positions	(0.5		)	—
Increase in current year tax positions	15.6			—
Balance at December 31, 2014	$	47.3		$	12.2

At December 31, 2014 and December 31, 2013, we had $47.3 million and $21.7 million of net unrecognized income tax benefits, respectively. Changes to prior and current year tax positions for the year ended December 31, 2014 relate primarily to transfer pricing, income tax credits and the effect of changes in exchange rates.

In 2014, 2013, and 2012, we recognized expense of $8.1 million, benefit of $6.1 million and expense of $2.8 million, respectively, related to interest and penalties in income tax expense on our Consolidated Statement of Income. We have a liability of $12.2 million and $4.1 million related to the estimated future payment of interest and penalties at December 31, 2014 and 2013, respectively.

We file income tax returns in the U.S. federal jurisdiction, as well as various states and foreign jurisdictions. The Internal Revenue Service (IRS) commenced an examination of our U.S. income tax returns for 2010 and 2011 in 2013. The Mexican tax authorities commenced a transfer pricing examination of our income tax return for 2008 in 2013 and continue with its transfer pricing examination of our 2007 income tax return. In 2014, the India Tax Authorities commenced a transfer pricing examination for the 2010/2011 tax year. We are no longer subject to U.S. federal, state and local, or non-U.S. income tax examinations by tax authorities for years before 2007. At this time, we are not aware of any examinations underway in any other foreign jurisdictions.

The U.S. federal income tax examination for the years 2008 and 2009 and the Mexico transfer pricing examination for the year 2006 were settled in 2013. These settlements resulted in a reduction of a portion of our liability for unrecognized income tax benefits and a cash payment of $4.7 million in 2013.

Based on the status of the IRS audits and audits outside the U.S., and the protocol of finalizing audits by the relevant tax authorities, it is not possible to estimate the impact of changes, if any, to previously recorded uncertain tax positions. Although it is not possible to predict the timing of the conclusion of all ongoing audits with certainty, we anticipate that the current U.S. IRS audit will be completed during 2015. It is also possible that the current 2007 and 2008 audits with the Mexican tax authorities will be completed before the end of 2016. Although it is difficult to estimate with certainty the amount of an audit settlement for the years currently under audit, we do not expect any settlements will be materially different from what we have recorded in unrecognized tax benefits. We will continue to monitor the progress and conclusions of all ongoing audits and will adjust our estimated liability as necessary.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

8. EARNINGS PER SHARE (EPS)

We present earnings per share (EPS) using the two-class method. This method allocates undistributed earnings between common shares and non-vested share based payment awards that entitle the holder to nonforfeitable dividend rights. Our participating securities include non-vested restricted stock units.

The following table sets forth the computation of our basic and diluted EPS available to shareholders of common stock (excluding participating securities):

	2014			2013			2012
	(in millions, except per share data)
Numerator
Net income attributable to AAM	$	143.0		$	94.5		$	367.7
Less: Net income attributable to participating securities	(2.9		)	(1.9		)	(2.6		)
Net income attributable to common shareholders - Basic	$	140.1		$	92.6		$	365.1
Undistributed earnings reallocated to common shareholders under two step dilutive method	—			—			—
Net income attributable to common shareholders - Dilutive	$	140.1		$	92.6		$	365.1
Denominators
Basic common shares outstanding -
Weighted-average shares outstanding	77.3			76.7			75.3
Less: Participating securities	(1.6		)	(1.5		)	(0.5		)
Weighted-average common shares outstanding	75.7			75.2			74.8
Effect of dilutive securities -
Dilutive stock-based compensation	0.2			0.1			0.1
Diluted shares outstanding -
Adjusted weighted-average shares after assumed conversions	75.9			75.3			74.9
Basic EPS	$	1.85		$	1.23		$	4.88
Diluted EPS	$	1.85		$	1.23		$	4.87

Certain exercisable stock options were excluded in the computations of diluted EPS because the exercise price of these options was greater than the average annual market prices of our stock. The number of stock options outstanding excluded from the calculation of diluted EPS was 0.5 million at year-end 2014, 2.0 million at year-end 2013 and 3.3 million at year-end 2012. The ranges of exercise prices related to these stock options were $19.54 - $26.65 at year-end 2014, $19.54 - $40.83 at year-end 2013 and $15.58 - $40.83 at year-end 2012.

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AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

9. COMMITMENTS AND CONTINGENCIES

PURCHASE COMMITMENTS Obligatedpurchase commitments for capital expenditures and related project expenses were approximately $109.8 million at December 31, 2014 and $161.4 million at December 31, 2013.

LEGAL PROCEEDINGS We are involved in various legal proceedings incidental to our business. Although the outcome of these matters cannot be predicted with certainty, we do not believe that any of these matters, individually or in the aggregate, will have a material effect on our financial condition, results of operations or cash flows.

We are subject to various federal, state, local and foreign environmental and occupational safety and health laws, regulations and ordinances, including those regulating air emissions, water discharge, waste management and environmental cleanup. We will continue to closely monitor our environmental conditions to ensure that we are in compliance with all laws, regulations and ordinances. We have made, and will continue to make, capital and other expenditures to comply with environmental requirements, including recurring administrative costs. Such expenditures were not significant during 2014, 2013 and 2012.

In 2012, the International UAW filed suit against AAM alleging that we violated certain provisions of the collective bargaining agreement covering represented hourly associates at the DMC and CKMF related to pension and postretirement benefits. In 2012, we recorded $28.7 million in cost of goods sold related to pension and postretirement benefits to be provided to certain eligible UAW associates as a result of our election to apply MAP-21 and the subsequent recertification of our U.S. hourly pension plan.  This suit was settled in 2012.

ENVIRONMENTAL OBLIGATIONS Due to the nature of our manufacturing operations, we have legal obligations to perform asset retirement activities pursuant to federal, state, and local requirements. The process of estimating environmental liabilities is complex. Significant uncertainty may exist related to the timing and method of the settlement of these obligations. Therefore, these liabilities are not reasonably estimable until a triggering event occurs that allows us to estimate a range and assess the probabilities of potential settlement dates and the potential methods of settlement.

In the future, we will update our estimated costs and potential settlement dates and methods and their associated probabilities based on available information. Any update may change our estimate and could result in a material adjustment to this liability.

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AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

PRODUCT WARRANTIES We record a liability for estimated warranty obligations at the dates our products are sold. These estimates are established using sales volumes and internal and external warranty data where there is no payment history and historical information about the average cost of warranty claims for customers with prior claims. We estimate our costs based on the contractual arrangements with our customers, existing customer warranty terms and internal and external warranty data, which includes a determination of our warranty claims and take actions to improve product quality and minimize warranty claims. We continuously evaluate these estimates and our customers' administration of their warranty programs. We closely monitor actual warranty claim data and adjust the liability, as necessary, on a quarterly basis.

We recorded $2.3 million and $9.9 million of expense in 2013 and 2012, respectively, related to a field action with our largest customer. In 2013, we made warranty payments of $12.3 million, of which $11.3 million related to this field action. During 2014 and 2013, we also made adjustments to our warranty accrual to reflect revised estimates regarding our projected future warranty obligations.

The following table provides a reconciliation of changes in the product warranty liability:

	December 31,
	2014			2013
	(in millions)
Beginning balance	$	14.3		$	29.1
Accruals	9.3			12.8
Settlements	(2.2		)	(12.3		)
Adjustments to prior period accruals	(8.7		)	(15.0		)
Foreign currency translation	(0.3		)	(0.3		)
Ending balance	$	12.4		$	14.3

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AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

10. RECLASSIFICATIONS OUT OF ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)

Reclassification adjustments and other activity impacting accumulated other comprehensive income (loss) (AOCI) during the year ended December 31, 2014 and December 31, 2013 are as follows (in millions):

	Defined Benefit Plans				Foreign Currency Translation Adjustments			Unrecognized Gain (Loss) on Derivatives				Total
Balance at December 31, 2013	$	(197.9	)		$	(18.6	)	$	0.3			$	(216.2	)
Other comprehensive loss before reclassifications	(68.1		)	(a)	(30.3		)	(6.8		)		(105.2		)
Amounts reclassified from accumulated other comprehensive income (loss) into net income	25.4			(a)(b)(d)	—			(0.9		)	(c)	24.5
Net current period other comprehensive loss	(42.7		)		(30.3		)	(7.7		)		(80.7		)
Balance at December 31, 2014	$	(240.6	)		$	(48.9	)	$	(7.4	)		$	(296.9	)
	Defined Benefit Plans				Foreign Currency Translation Adjustments			Unrecognized Gain on Derivatives				Total
Balance at December 31, 2012	$	(274.5	)		$	7.6		$	2.3			$	(264.6	)
Other comprehensive income (loss) before reclassifications	67.7			(a)	(26.2		)	0.8				42.3
Amounts reclassified from accumulated other comprehensive income (loss) into net income	8.9			(a)(b)	—			(2.8		)	(c)	6.1
Net current period other comprehensive income (loss)	76.6				(26.2		)	(2.0		)		48.4
Balance at December 31, 2013	$	(197.9	)		$	(18.6	)	$	0.3			$	(216.2	)
(a) These amounts are net of tax of $36.6 million and $(13.4) million for the other comprehensive loss before reclassifications and the amounts reclassified from AOCI, respectively, for the year ended December 31, 2014, and $(36.7) million and $(4.6) million, respectively, for the year ended December 31, 2013.
(b) The net amount reclassified from AOCI included $23.6 million in cost of goods sold (COGS) and $1.8 million in selling, general & administrative expenses (SG&A) for the year ended December 31, 2014 and $4.7 million in COGS and $4.2 million in SG&A for the year ended December 31, 2013.
(c) The amounts reclassified from AOCI are included in COGS.
(d) Includes a reclassification of $23.1 million, net of tax, in the fourth quarter of 2014, related to our terminated vested lump-sum pension payout in the U.S.

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AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

11. SEGMENT AND GEOGRAPHIC INFORMATION

We operate in one reportable segment: the manufacture, engineer, design and validation of driveline systems and related components and chassis modules for light trucks, SUVs, passenger cars, crossover vehicles and commercial vehicles. Financial information relating to our operations by geographic area is presented in the following table. Net sales are attributed to countries based upon location of customer. Long-lived assets exclude deferred income taxes.

	December 31,
	2014		2013		2012
	(in millions)
Net sales
United States	$	2,073.6	$	1,682.0	$	1,576.6
Canada	64.6		74.4		75.0
Mexico	1,055.5		865.6		755.1
South America	156.5		201.1		216.4
Asia	238.6		255.2		214.5
Europe and other	107.2		129.0		93.3
Total net sales	$	3,696.0	$	3,207.3	$	2,930.9
Long-lived assets
United States	$	885.9	$	850.0	$	865.3
Mexico	513.2		469.3		417.7
South America	80.5		100.2		113.3
Asia	177.3		176.7		159.0
Europe	94.0		93.2		72.5
Total long-lived assets	$	1,750.9	$	1,689.4	$	1,627.8

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AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

12. UNAUDITED QUARTERLY FINANCIAL DATA

	Three Months Ended,
	March 31		June 30		September 30		December 31
	(in millions, except per share data)
2014
Net sales	$	858.8	$	946.9	$	950.8	$	939.5
Gross profit	121.9		149.0		140.7		111.2
Net income	33.6		52.2		44.0		13.2
Net income attributable to AAM	33.6		52.2		44.0		13.2
Basic EPS (1)	$	0.44	$	0.67	$	0.57	$	0.17
Diluted EPS (1)	$	0.44	$	0.67	$	0.57	$	0.17
2013
Net sales	$	755.6	$	799.6	$	820.8	$	831.3
Gross profit	104.3		122.2		125.3		126.9
Net income	7.3		25.8		31.6		29.8
Net income attributable to AAM	7.3		25.8		31.6		29.8
Basic EPS (1)	$	0.10	$	0.34	$	0.41	$	0.39
Diluted EPS (1)	$	0.10	$	0.34	$	0.41	$	0.39

(1) Full year basic and diluted EPS will not necessarily agree to the sum of the four quarters because each quarter is a separate calculation.

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AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

13. SUPPLEMENTAL GUARANTOR CONDENSED CONSOLIDATING FINANCIAL STATEMENTS

Amounts have been revised for the effects of the error as discussed in Note 1 - Organization and Summary of Significant Accounting Policies.

Holdings has no significant assets other than its 100% ownership in AAM, Inc. and no direct subsidiaries other than AAM, Inc. The 7.75% Notes, 6.625% Notes, 6.25% Notes and 5.125% Notes are senior unsecured obligations of AAM Inc.; all of which are fully and unconditionally guaranteed by Holdings and substantially all domestic subsidiaries of AAM, Inc., which are 100% indirectly owned by Holdings.

These Condensed Consolidating Financial Statements are prepared under the equity method of accounting whereby the investments in subsidiaries are recorded at cost and adjusted for the parent's share of the subsidiaries' cumulative results of operations, capital contributions and distributions, and other equity changes.

Condensed Consolidating Statements of Income
2014	Holdings			AAM Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Elims			Consolidated
	(in millions)
Net sales
External	$	—		$	1,099.5		$	225.1		$	2,371.4		$	—		$	3,696.0
Intercompany	—			13.1			246.9			21.6			(281.6		)	—
Total net sales	—			1,112.6			472.0			2,393.0			(281.6		)	3,696.0
Cost of goods sold	—			1,112.4			396.1			1,946.3			(281.6		)	3,173.2
Gross profit	—			0.2			75.9			446.7			—			522.8
Selling, general and administrative expenses	—			194.0			0.2			61.0			—			255.2
Operating income (loss)	—			(193.8		)	75.7			385.7			—			267.6
Non-operating income (expense), net	—			(103.0		)	9.0			3.1			—			(90.9		)
Income (loss) before income taxes	—			(296.8		)	84.7			388.8			—			176.7
Income tax expense (benefit)	—			(11.8		)	0.9			44.6			—			33.7
Earnings (loss) from equity in subsidiaries	143.0			204.0			(23.3		)	—			(323.7		)	—
Net income (loss) before royalties and dividends	143.0			(81.0		)	60.5			344.2			(323.7		)	143.0
Royalties and dividends	—			224.0			—			(224.0		)	—			—
Net income after royalties and dividends	143.0			143.0			60.5			120.2			(323.7		)	143.0
Other comprehensive loss, net of tax	(80.7		)	(80.7		)	(23.5		)	(34.8		)	139.0			(80.7		)
Comprehensive income	$	62.3		$	62.3		$	37.0		$	85.4		$	(184.7	)	$	62.3

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AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

2013	Holdings			AAM Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Elims			Consolidated
Net sales
External	$	—		$	773.6		$	226.0		$	2,207.7		$	—		$	3,207.3
Intercompany	—			15.3			226.1			14.0			(255.4		)	—
Total net sales	—			788.9			452.1			2,221.7			(255.4		)	3,207.3
Cost of goods sold	—			769.4			389.0			1,825.6			(255.4		)	2,728.6
Gross profit	—			19.5			63.1			396.1			—			478.7
Selling, general and administrative expenses	—			182.4			0.1			55.9			—			238.4
Operating income (loss)	—			(162.9		)	63.0			340.2			—			240.3
Non-operating income (expense), net	—			(155.1		)	10.7			(9.6		)	—			(154.0		)
Income (loss) before income taxes	—			(318.0		)	73.7			330.6			—			86.3
Income tax expense (benefit)	—			(24.9		)	0.9			15.8			—			(8.2		)
Earnings (loss) from equity in subsidiaries	94.5			167.0			(21.7		)	—			(239.8		)	—
Net income (loss) before royalties and dividends	94.5			(126.1		)	51.1			314.8			(239.8		)	94.5
Royalties and dividends	—			220.6			—			(220.6		)	—			—
Net income after royalties and dividends	94.5			94.5			51.1			94.2			(239.8		)	94.5
Other comprehensive income (loss), net of tax	48.4			48.4			(7.2		)	(10.8		)	(30.4		)	48.4
Comprehensive income	$	142.9		$	142.9		$	43.9		$	83.4		$	(270.2	)	$	142.9
2012	Holdings			AAM Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Elims			Consolidated
Net sales
External	$	—		$	704.8		$	214.4		$	2,011.7		$	—		$	2,930.9
Intercompany	—			18.6			226.8			25.2			(270.6		)	—
Total net sales	—			723.4			441.2			2,036.9			(270.6		)	2,930.9
Cost of goods sold	—			709.8			389.8			1,702.2			(270.6		)	2,531.2
Gross profit	—			13.6			51.4			334.7			—			399.7
Selling, general and administrative expenses	—			186.5			—			56.8			—			243.3
Operating income (loss)	—			(172.9		)	51.4			277.9			—			156.4
Non-operating income (expense), net	—			(135.2		)	(2.2		)	12.5			—			(124.9		)
Income (loss) before income taxes	—			(308.1		)	49.2			290.4			—			31.5
Income tax expense (benefit)	—			(343.9		)	(5.5		)	14.2			—			(335.2		)
Earnings (loss) from equity in subsidiaries	367.7			79.0			(49.2		)	—			(397.5		)	—
Net income before royalties and dividends	367.7			114.8			5.5			276.2			(397.5		)	366.7
Royalties and dividends	—			252.9			—			(252.9		)	—			—
Net income after royalties and dividends	367.7			367.7			5.5			23.3			(397.5		)	366.7
Net loss attributable to noncontrolling interests	—			—			—			1.0			—			1.0
Net income attributable to AAM	$	367.7		$	367.7		$	5.5		$	24.3		$	(397.5	)	$	367.7
Other comprehensive loss, net of tax	(60.5		)	(60.5		)	(10.1		)	(3.6		)	74.2			(60.5		)
Foreign currency translation adjustments attributable to noncontrolling interests	0.3			0.3			—			0.3			(0.6		)	0.3
Comprehensive income (loss) attributable to AAM	$	306.9		$	306.9		$	(4.6	)	$	20.4		$	(322.7	)	$	306.9

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AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

Condensed Consolidating Balance Sheets
2014	Holdings		AAM Inc.		Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Elims			Consolidated
Assets	(in millions)
Current assets
Cash and cash equivalents	$	—	$	69.7	$	—	$	179.5	$	—		$	249.2
Accounts receivable, net	—		137.5		23.9		371.3		—			532.7
Intercompany receivables	—		231.0		174.1		10.0		(415.1		)	—
Inventories, net	—		64.9		32.3		151.6		—			248.8
Other current assets	—		53.6		2.6		52.6		—			108.8
Total current assets	—		556.7		232.9		765.0		(415.1		)	1,139.5
Property, plant and equipment, net	—		230.0		87.9		743.2		—			1,061.1
Goodwill	—		—		147.9		7.1		—			155.0
Intercompany notes and accounts receivable	—		509.4		219.1		—		(728.5		)	—
Other assets and deferred charges	—		736.6		45.7		121.3		—			903.6
Investment in subsidiaries	433.8		1,134.6		—		—		(1,568.4		)	—
Total assets	$	433.8	$	3,167.3	$	733.5	$	1,636.6	$	(2,712.0	)	$	3,259.2
Liabilities and stockholders' equity
Current liabilities
Current portion of long-term debt	$	—	$	9.4	$	—	$	3.6	$	—		$	13.0
Accounts payable	—		127.3		38.9		278.1		—			444.3
Intercompany payables	—		177.0		105.3		132.8		(415.1		)	—
Other current liabilities	—		121.0		4.4		104.5		—			229.9
Total current liabilities	—		434.7		148.6		519.0		(415.1		)	687.2
Intercompany notes and accounts payable	320.4		6.9		—		401.2		(728.5		)	—
Long-term debt	—		1,483.1		4.9		35.4		—			1,523.4
Investment in subsidiaries obligation	—		—		53.8		—		(53.8		)	—
Other long-term liabilities	—		808.8		0.6		125.8		—			935.2
Total liabilities	320.4		2,733.5		207.9		1,081.4		(1,197.4		)	3,145.8
Total stockholders' equity	113.4		433.8		525.6		555.2		(1,514.6		)	113.4
Total liabilities and stockholders' equity	$	433.8	$	3,167.3	$	733.5	$	1,636.6	$	(2,712.0	)	$	3,259.2
2013	Holdings		AAM Inc.		Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Elims			Consolidated
Assets
Current assets
Cash and cash equivalents	$	—	$	36.9	$	—	$	117.1	$	—		$	154.0
Accounts receivable, net	—		102.7		25.6		330.2		—			458.5
Intercompany receivables	—		180.5		116.6		9.2		(306.3		)	—
Inventories, net	—		62.4		34.2		165.2		—			261.8
Other current assets	—		43.8		3.2		75.0		—			122.0
Total current assets	—		426.3		179.6		696.7		(306.3		)	996.3
Property, plant and equipment, net	—		239.8		83.0		735.7		—			1,058.5
Goodwill	—		—		147.8		8.6		—			156.4
Intercompany notes and accounts receivable	—		327.0		201.5		—		(528.5		)	—
Other assets and deferred charges	—		671.7		44.8		99.8		—			816.3
Investment in subsidiaries	363.7		1,240.1		—		—		(1,603.8		)	—
Total assets	$	363.7	$	2,904.9	$	656.7	$	1,540.8	$	(2,438.6	)	$	3,027.5
Liabilities and stockholders' equity
Current liabilities
Accounts payable	$	—	$	106.2	$	44.5	$	286.7	$	—		$	437.4
Intercompany payables			117.4		98.6		90.3		(306.3		)	—
Other current liabilities	—		120.4		4.1		96.8		—			221.3
Total current liabilities	—		344.0		147.2		473.8		(306.3		)	658.7
Intercompany notes and accounts payable	323.2		3.7		—		201.6		(528.5		)	—
Long-term debt	—		1,500.0		5.3		53.8		—			1,559.1
Investment in subsidiaries obligation	—		—		15.2		—		(15.2		)	—
Other long-term liabilities	—		693.5		0.5		75.2		—			769.2
Total liabilities	323.2		2,541.2		168.2		804.4		(850.0		)	2,987.0
Total stockholders' equity	40.5		363.7		488.5		736.4		(1,588.6		)	40.5
Total liabilities and stockholders' equity	$	363.7	$	2,904.9	$	656.7	$	1,540.8	$	(2,438.6	)	$	3,027.5

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AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

Condensed Consolidating Statements of Cash Flows
2014	Holdings			AAM Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Elims			Consolidated
	(in millions)
Net cash provided by operating activities	$	—		$	83.4		$	41.9		$	193.1		$	—		$	318.4
Investing activities
Purchases of property, plant and equipment	—			(51.3		)	(18.6		)	(136.6		)	—			(206.5		)
Proceeds from sale of property, plant and equipment	—			7.9			0.4			0.8			—			9.1
Proceeds from government grants	—			—			—			2.1			—			2.1
Intercompany activity	—			—			(23.3		)	—			23.3			—
Proceeds from sale-leaseback of equipment	—			—			—			—			—			—
Net cash used in investing activities	—			(43.4		)	(41.5		)	(133.7		)	23.3			(195.3		)
Financing activities
Net debt activity	—			(7.8		)	(0.4		)	(13.8		)	—			(22.0		)
Debt issuance costs	—			(0.3		)	—			—			—			(0.3		)
Employee stock option exercises	—			1.2			—			—			—			1.2
Purchase of treasury stock	(0.3		)	—			—			—			—			(0.3		)
Intercompany activity	0.3			(0.3		)	—			23.3			(23.3		)	—
Net cash provided by (used in) financing activities	—			(7.2		)	(0.4		)	9.5			(23.3		)	(21.4		)
Effect of exchange rate changes on cash	—			—			—			(6.5		)	—			(6.5		)
Net increase in cash and cash equivalents	—			32.8			—			62.4			—			95.2
Cash and cash equivalents at beginning of period	—			36.9			—			117.1			—			154.0
Cash and cash equivalents at end of period	$	—		$	69.7		$	—		$	179.5		$	—		$	249.2
2013	Holdings			AAM Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Elims			Consolidated
Net cash provided by (used in) operating activities	$	—		$	(35.9	)	$	64.9		$	194.0		$	—		$	223.0
Investing activities
Purchases of property, plant and equipment	—			(61.2		)	(12.5		)	(178.2		)	—			(251.9		)
Proceeds from sale of property, plant and equipment	—			5.1			0.5			3.5			—			9.1
Proceeds from sale-leaseback of equipment	—			24.1			—			—			—			24.1
Intercompany activity	—			—			(52.6		)	—			52.6			—
Net cash used in investing activities	—			(32.0		)	(64.6		)	(174.7		)	52.6			(218.7		)
Financing activities
Net debt activity	—			110.1			(0.3		)	(5.0		)	—			104.8
Debt issuance costs	—			(16.6		)	—			(0.1		)	—			(16.7		)
Employee stock option exercises	—			1.1			—			—			—			1.1
Purchase of treasury stock	(0.4		)	—			—			—			—			(0.4		)
Intercompany activity	0.4			(0.4		)	—			52.6			(52.6		)	—
Net cash provided by (used in) financing activities	—			94.2			(0.3		)	47.5			(52.6		)	88.8
Effect of exchange rate changes on cash	—			—			—			(1.5		)	—			(1.5		)
Net increase in cash and cash equivalents	—			26.3			—			65.3			—			91.6
Cash and cash equivalents at beginning of period	—			10.6			—			51.8			—			62.4
Cash and cash equivalents at end of period	$	—		$	36.9		$	—		$	117.1		$	—		$	154.0

75

AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

2012	Holdings			AAM Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Elims			Consolidated
Net cash provided by (used in) operating activities	$	—		$	(274.3	)	$	46.6		$	52.2		$	—		$	(175.5	)
Investing activities
Purchases of property, plant and equipment	—			(59.4		)	(9.0		)	(139.2		)	—			(207.6		)
Proceeds from sale of property, plant and equipment	—			7.0			—			3.1			—			10.1
Proceeds from sale-leaseback of equipment	—			12.1			—			—			—			12.1
Intercompany activity	—						(37.4		)				37.4			—
Net cash used in investing activities	—			(40.3		)	(46.4		)	(136.1		)	37.4			(185.4		)
Financing activities
Net debt activity	—			257.9			(0.2		)	16.2			—			273.9
Debt issuance costs	—			(10.6		)	—			—			—			(10.6		)
Employee stock option exercises, including tax benefit	—			0.1			—			—			—			0.1
Purchase of treasury stock	(5.9		)	—			—			—			—			(5.9		)
Purchase of noncontrolling interest	—			—			—			(4.0		)	—			(4.0		)
Intercompany activity	5.9			(5.9		)	—			37.4			(37.4		)	—
Net cash provided by (used in) financing activities	—			241.5			(0.2		)	49.6			(37.4		)	253.5
Effect of exchange rate changes on cash	—			—			—			0.6			—			0.6
Net decrease in cash and cash equivalents	—			(73.1		)	—			(33.7		)	—			(106.8		)
Cash and cash equivalents at beginning of period	—			83.7			—			85.5			—			169.2
Cash and cash equivalents at end of period	$	—		$	10.6		$	—		$	51.8		$	—		$	62.4

76

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and Stockholders of American Axle & Manufacturing Holdings, Inc.

Detroit, Michigan

We have audited the accompanying consolidated balance sheets of American Axle & Manufacturing Holdings, Inc. and subsidiaries (the "Company") as of December 31, 2014 and 2013, and the related consolidated statements of income, comprehensive income, stockholders’ equity (deficit), and cash flows for each of the three years in the period ended December 31, 2014. Our audits also included the financial statement schedule listed in the Index at Item 15. These financial statements and financial statement schedule are the responsibility of the Company's management. Our responsibility is to express an opinion on these financial statements and financial statement schedule based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, such consolidated financial statements present fairly, in all material respects, the financial position of American Axle & Manufacturing Holdings, Inc. and subsidiaries at December 31, 2014 and 2013, and the results of their operations and their cash flows for each of the three years in the period ended December 31, 2014, in conformity with accounting principles generally accepted in the United States of America. Also, in our opinion, such financial statement schedule, when considered in relation to the basic consolidated financial statements taken as a whole, presents fairly, in all material respects, the information set forth therein.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the Company's internal control over financial reporting as of December 31, 2014, based on the criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated February 23, 2015 expressed an adverse opinion on the Company's internal control over financial reporting.

/s/ DELOITTE & TOUCHE LLP

DELOITTE & TOUCHE LLP

Detroit, Michigan

February 23, 2015

77

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and Stockholders of American Axle & Manufacturing Holdings, Inc.

Detroit, Michigan

We have audited American Axle and Manufacturing Holdings, Inc. and subsidiaries (the "Company's") internal control over financial reporting as of December 31, 2014, based on criteria established in Internal Control — Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission. The Company's management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the Company's internal control over financial reporting based on our audit.

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on that risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

A company's internal control over financial reporting is a process designed by, or under the supervision of, the company's principal executive and principal financial officers, or persons performing similar functions, and effected by the company's board of directors, management, and other personnel to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company's internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company's assets that could have a material effect on the financial statements.

Because of the inherent limitations of internal control over financial reporting, including the possibility of collusion or improper management override of controls, material misstatements due to error or fraud may not be prevented or detected on a timely basis. Also, projections of any evaluation of the effectiveness of the internal control over financial reporting to future periods are subject to the risk that the controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

A material weakness is a deficiency, or a combination of deficiencies, in internal control over financial reporting, such that there is a reasonable possibility that a material misstatement of the company’s annual or interim financial statements will not be prevented or detected on a timely basis. The following material weakness has been identified and included in management's assessment: management has identified a material weakness in the operating effectiveness of the Corporate Finance oversight of accounting for changes in certain accrued accounts payable balances at a single location. This material weakness was considered in determining the nature, timing, and extent of audit tests applied in our audit of the consolidated financial statements and financial statement schedule as of and for the year ended December 31, 2014 of the Company and this report does not affect our report on such financial statements and financial statement schedule.

78

In our opinion, because of the effect of the material weakness identified above on the achievement of the objectives of the control criteria, the Company has not maintained effective internal control over financial reporting as of December 31, 2014, based on the criteria established in Internal Control — Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated financial statements and financial statement schedule as of and for the year ended December 31, 2014, of the Company and our report dated February 23, 2015 expressed an unqualified opinion on those financial statements and financial statement schedule.

/s/ DELOITTE & TOUCHE LLP

DELOITTE & TOUCHE LLP

Detroit, Michigan

February 23, 2015

79

Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

None

Item 9A. Controls and Procedures

Disclosure Controls and Procedures

Under the direction of our Chief Executive Officer and Chief Financial Officer, we evaluated our disclosure controls and procedures and internal control over financial reporting. As discussed in our Form 10-Q/A for the interim period ended September 30, 2014 and as discussed below, we identified a material weakness in our internal control over financial reporting with respect to our accounting for changes in certain accrued accounts payable balances at a single location. As a result, we concluded that our disclosure controls and procedures (as defined in Rules 13a - 15(e) or 15d - 15(e) under the Securities Exchange Act of 1934 (the “Exchange Act”)) were not effective as of December 31, 2014.

Management Report on Internal Control over Financial Reporting

We are responsible for establishing and maintaining adequate internal control over financial reporting. Our internal control system was designed to provide reasonable assurance to our management and Board of Directors regarding the preparation and fair presentation of our consolidated financial statements. Our management assessed the effectiveness of our internal control over financial reporting as of December 31, 2014. In making this assessment, we used criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission.

A material weakness is a deficiency, or combination of deficiencies, in internal control over financial reporting, such that there is a reasonable possibility that a material misstatement of the Company’s annual or interim financial statements will not be prevented or detected on a timely basis.

As of December 31, 2014, a material weakness in the operating effectiveness of the Corporate Finance oversight of accounting for changes in certain accrued accounts payable balances at a single location existed.

Corporate Finance executives were not sufficiently involved in the review and analysis of the underlying support for changes in the accrued accounts payable balances at the location. As a result, Corporate Finance lacked sufficient information to properly assess the accounting for the correction of an overstatement of such accounts under generally accepted accounting principles. The effect of this material weakness in internal control was a misstatement of the condensed consolidated statements of income and comprehensive income for the third fiscal quarter ended September 30, 2014. This was corrected by restating the interim financial statements on Form 10-Q/A.

Based on our assessment, and the identification of this material weakness, management concluded that, as of December 31, 2014, our internal control over financial reporting was not effective based on the criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission.

The attestation report of our independent registered public accounting firm regarding internal control over financial reporting is included in Item 8 - ”Financial Statements and Supplementary Data.”

Change in Internal Control over Financial Reporting

During the fourth fiscal quarter of 2014, and in connection with the preparation of our consolidated annual financial statements for the year ended December 31, 2014 which occurred in the first fiscal quarter of 2015, we have implemented new procedures, including enhanced documentation, analysis and review of changes in the accrued accounts payable balances. We have retrained Finance executives at the location where the overstatement of accrued accounts payable originated, as well as those working in Corporate Finance, as to the importance of appropriate communication and review of non-routine changes in accruals so that any such changes can be properly assessed under generally accepted accounting principles.

80

Except as described above, there were no changes in our internal control over financial reporting that occurred during the fourth fiscal quarter ended December 31, 2014 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

As of February 23, 2015, management believes our remediation efforts have been effective with respect to our internal control over financial reporting and that the previous material weakness in our internal control over financial reporting has been remediated.

Item 9B. Other Information

None

81

Part III

Item 10. Directors, Executive Officers and Corporate Governance

The information required by Item 401(b), (d) (e) and (f) of Regulation S-K about our executive officers is furnished in Part I of this Form 10-K, Annual Report under the caption “Executive Officers of the Registrant.” All other information required by Item 10 is incorporated herein by reference from our Proxy Statement which we expect to file on or about March 19, 2015.

We have adopted a code of ethics that applies to our Chief Executive Officer and Chief Financial Officer and the senior financial executives who report directly to our Chief Financial Officer. This code of ethics is available on our website at www.aam.com. We will post on our website any amendment to or waiver from the provisions of the code of ethics or our code of business conduct that applies to executive officers or directors of the Company.

Item 11. Executive Compensation

The information required by Item 11 is incorporated by reference from our Proxy Statement.

Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

The information required by Item 12 is incorporated by reference from our Proxy Statement.

Item 13. Certain Relationships and Related Transactions, and Director Independence

The information required by Item 13 under Items 404 and 407(a) of Regulation S-K is incorporated by reference from our Proxy Statement.

Item 14. Principal Accounting Fees and Services

The information required by Item 8(e) of Schedule 14A is incorporated by reference from our Proxy Statement.

82

Part IV

Item 15. Exhibits and Financial Statement Schedules

The following documents are filed as a part of this report:

1. All Financial Statements

Consolidated Statements of Income

Consolidated Statements of Comprehensive Income

Consolidated Balance Sheets

Consolidated Statements of Cash Flows

Consolidated Statements of Stockholders' Equity (Deficit)

Notes to Consolidated Financial Statements

Report of Independent Registered Public Accounting Firm

2. Financial Statement Schedules

Schedule II - Valuation and Qualifying Accounts for the years ended December 31, 2014, 2013 and 2012 is filed as part of this Form 10-K.

All other schedules have been omitted because they are not applicable or not required.

3. Exhibits

The following exhibits were previously filed unless otherwise indicated:

Number	Description of Exhibit
3.01	Amended and Restated Certificate of Incorporation
	(Incorporated by reference to Exhibit 3.01 filed with American Axle & Manufacturing Holdings, Inc. Registration Statement on Form S-1 (Registration No. 333-53491))
3.02	Amended and Restated Bylaws of American Axle & Manufacturing Inc.
4.01	Specimen Certificate for shares of the Company's Common Stock
	(Incorporated by reference to Exhibit 4.01 filed with American Axle & Manufacturing Holdings, Inc. Registration Statement on Form S-1 (Registration No. 333-53491))
4.02	Form of Indenture, among American Axle & Manufacturing, Inc., American Axle & Manufacturing Holdings, Inc., as guarantor, certain subsidiary guarantors and U.S. Bank National Association, as trustee
	(Incorporated by reference to Exhibit 4.3 of Registration Statement on Form S-3 dated July 12, 2011.)
4.03	Indenture, dated as of November 3, 2011, among American Axle & Manufacturing, Inc., the Guarantors and U.S. Bank National Association, as trustee
	(Incorporated by Reference to Exhibit 4.1 of Current Report on Form 8-K dated October 31, 2011.)
4.04	Form of 7.75% Senior Notes due 2019
	(Incorporated by Reference to Exhibit 4.2 of Current Report on Form 8-K dated October 31, 2011.)

83

AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

Number	Description of Exhibit
4.05	Form of 6.625% Notes due 2022
	(Incorporated by Reference to Exhibit 4.1 of Current Report on Form 8-K dated September 17, 2012.)
4.06	Form of 6.25% Notes due 2021
	(Incorporated by Reference to Exhibit 4.1 of Current Report on Form 8-K dated February 28, 2013.)
4.07	Form of 5.125% Notes due 2019
	(Incorporated by Reference to Exhibit 4.1 of Current Report on Form 8-K dated November 12, 2013.)
10.01	Asset Purchase Agreement, dated February 18, 1994, between AAM, Inc. and GM, and all amendments thereto
	(Incorporated by reference to Exhibit 10.01 filed with American Axle & Manufacturing Holdings, Inc. Registration Statement on Form S-1 (Registration No. 333-53491))
10.02	Lifetime Program Contract for GMT-900 Products, between GM and AAM, Inc.
	(Incorporated by reference to Exhibit 10.51 filed with American Axle & Manufacturing Holdings, Inc. Form 10-Q for the quarterly period ended June 30, 2003.)
++10.03	Letter Agreement dated April 22, 2004 by and between DaimlerChrysler Corporation and AAM, Inc.
	(Incorporated by reference to Exhibit 10.43 filed with American Axle & Manufacturing Holdings, Inc. Form 10-Q for the quarterly period ended June 30, 2004.)
‡10.04	Forms of Restricted Stock and Restricted Stock Unit Agreements under 1999 Stock Incentive Plan
	(Incorporated by reference to Exhibit 10.45 filed with American Axle & Manufacturing Holdings, Inc. Form 10-Q for the quarterly period ended September 30, 2004.)
‡10.05	Form of 2004 Stock Option Agreement
	(Incorporated by reference to Exhibit 10.3 of Current Report on Form 8-K dated October 26, 2005.)
‡10.06	Form of 2005 Stock Option Agreement
	(Incorporated by reference to Exhibit 10.4 of Current Report on Form 8-K dated October 26, 2005.)
‡10.07	Form of Nonqualified Stock Option Agreement
	(Incorporated by reference to Exhibit 10.5 of Current Report on Form 8-K dated October 26, 2005.)
‡10.08	Restated 1999 American Axle & Manufacturing Holdings, Inc. Stock Incentive Compensation Plan
	(Incorporated by reference to Exhibit 10.51 filed with American Axle & Manufacturing Holdings, Inc. Form 10-K for the year ended December 31, 2005.)

84

AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

Number	Description of Exhibit
++10.09	Letter Agreement between General Motors Corporation and American Axle & Manufacturing, Inc. dated June 29, 2007
	(Incorporated by reference to Exhibit 99.1 of Current Report on Form 8-K dated June 29, 2007.)
‡10.10	Form of 2008 Stock Option Award Agreement for executive officers of American Axle & Manufacturing Holdings, Inc.
	(Incorporated by reference to Exhibit 10.52 filed with American Axle & Manufacturing Holdings, Inc. Form 10-K for the year ended December 31, 2007.)
10.11	Agreement between General Motors Corporation and American Axle & Manufacturing, Inc. dated May 3, 2008, as amended May 16, 2008
	(Incorporated by reference to Exhibit 10.1 of Current Report on Form 8-K dated May 23, 2008.)
‡10.12	Amended and Restated AAM 2009 Long-Term Incentive Plan
	(Incorporated by reference to Exhibit 10.61 filed with American Axle & Manufacturing Holdings, Inc. Form 10-Q for the quarter ended June 30, 2009.)
++10.13	Settlement and Commercial Agreement, dated as of September 16, 2009, among General Motors Company, American Axle & Manufacturing Holdings, Inc. and American Axle & Manufacturing, Inc.
	(Incorporated by reference to Exhibit 10.62 of Quarterly Report on Form 10-Q for the quarterly period ended September 30, 2009.)
10.14	First Lien Intercreditor Agreement dated as of December 18, 2009, among American Axle & Manufacturing Holdings, Inc., American Axle & Manufacturing, Inc., certain domestic subsidiaries of the Company, JPMorgan Chase Bank, N.A., U.S. Bank National Association and any additional authorized representative from time to time party hereto
	(Incorporated by reference to Exhibit 99.1 of Current Report on Form 8-K dated December 21, 2009.)
‡10.15	Special Incentive Award Agreement dated March 15, 2010 between American Axle & Manufacturing Holdings, Inc. and David C. Dauch
	(Incorporated by reference to Exhibit 10.47 of Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2010.)
‡10.16	Special Incentive Award Agreement dated March 15, 2010 between American Axle & Manufacturing Holdings, Inc. and Michael K. Simonte
	(Incorporated by reference to Exhibit 10.48 of Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2010.)
‡10.17	American Axle & Manufacturing Holdings, Inc. 2012 Omnibus Incentive Plan
	(Incorporated by reference to Exhibit 10.1 of Current Report on Form 8-K dated May 1, 2012.)
‡10.18	Form of Nonqualified Stock Option Award Agreement under the 2012 Omnibus Incentive Plan
	(Incorporated by reference to Exhibit 10.2 of Current Report on Form 8-K dated May 1, 2012.)
‡10.19	Form of Restricted Stock Unit Award Agreement for Non-employee Directors under the 2012 Omnibus Incentive Plan
	(Incorporated by reference to Exhibit 10.3 of Current Report on Form 8-K dated May 1, 2012.)

85

AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

Number	Description of Exhibit
‡10.20	Form of Restricted Stock Unit Award Agreement (Cliff Vesting) for Executive Officers under the 2012 Omnibus Incentive Plan
	(Incorporated by reference to Exhibit 10.4 of Current Report on Form 8-K dated May 1, 2012.)
‡10.21	Form of Restricted Stock Unit Award Agreement (Installment Vesting) for Executive Officers under the 2012 Omnibus Incentive Plan
	(Incorporated by reference to Exhibit 10.5 of Current Report on Form 8-K dated May 1, 2012.)
‡10.22	Form of Performance Unit Award Agreement for Executive Officers under the 2012 Omnibus Incentive Plan
	(Incorporated by reference to Exhibit 10.6 of Current Report on Form 8-K dated May 1, 2012.)
‡10.23	American Axle & Manufacturing, Inc. Amended and Restated Supplemental Executive Retirement Program Document
	(Incorporated by reference to Exhibit 10.37 of Quarterly Report on Form 10-Q dated July 27, 2012.)
10.24	Amendment and Restatement Agreement dated as of September 13, 2013, among American Axle & Manufacturing Holdings, Inc., JPMorgan Chase Bank, N.A., as Administrative Agent and as Collateral Agent, and each financial institution party thereto as a lender, including as Exhibit A thereto, the Amended and Restated Credit Agreement dated as of January 9, 2004 and amended and restated as of September 13, 2013 among American Axle & Manufacturing, Inc., American Axle & Manufacturing Holdings, Inc., the Lenders party thereto and JPMorgan Chase Bank, N.A., as Administrative Agent
	(Incorporated by reference to Exhibit 10.1 of Current Report on Form 8-K dated September 16, 2013.)
10.25	Guarantee Agreement dated as of January 9, 2004, as amended and restated as of September 13, 2013, among American Axle & Manufacturing, Inc., American Axle & Manufacturing Holdings, Inc., certain subsidiaries of American Axle & Manufacturing, Inc. identified therein, and JPMorgan Chase Bank, N.A. as Administrative Agent for the lenders referred to therein
	(Incorporated by reference to Exhibit 10.2 of Current Report on Form 8-K dated September 16, 2013.)
10.26	Collateral Agreement dated as of November 7, 2008, as amended and restated as of September 13, 2013, among American Axle & Manufacturing Holdings, Inc., American Axle & Manufacturing, Inc., certain subsidiaries of American Axle & Manufacturing, Inc. identified therein and JPMorgan Chase Bank, N.A., as Collateral Agent
	(Incorporated by reference to Exhibit 99.1 of Current Report on Form 8-K dated September 16, 2013.)
10.27	Amended and Restated Employment Agreement dated September 27, 2013 by and between the Company and David C. Dauch
	(Incorporated by reference to Exhibit 10.1 of Current Report on Form 8-K dated October 3, 2013.)
10.28	Amended and Restated American Axle & Manufacturing, Inc. Incentive Compensation Plan for Executive Officers effective as of January 1, 2013
	(Incorporated by reference to Exhibit 10.35 of Quarterly Report on Form 10-Q dated November 1, 2013.)
10.29	Form of Performance Share Award Agreement (Relative TSR) for Executive Officers under the 2012 Omnibus Incentive Plan
	(Incorporated by reference to Exhibit 10.35 of Annual Report on Form 10-K dated February 07, 2014.)

86

AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

Number	Description of Exhibit
10.30	Form of Performance Share Award Agreement (EBITDA) for Executive Officers under the 2012 Omnibus Incentive Plan
	(Incorporated by reference to Exhibit 10.36 of Annual Report on Form 10-K dated February 07, 2014.)
10.31	Form of Restricted Stock Unit Award Agreement (Cliff Vesting) for Executive Officers under the 2012 Omnibus Incentive Plan
	(Incorporated by reference to Exhibit 10.37 of Annual Report on Form 10-K dated February 07, 2014.)
10.32	Form of Restricted Stock Unit Award Agreement for Board of Directors under the 2012 Omnibus Incentive Plan
	(Incorporated by reference to Exhibit 10.1 of Quarterly Report on Form 10-Q dated May 02, 2014.)
*12	Computation of Ratio of Earnings to Fixed Charges
*21	Subsidiaries of the Registrant
*23	Consent of Independent Registered Public Accounting Firm
*31.1	Certification of Chief Executive Officer Pursuant to Rule 13a-14(a) of the Securities Exchange Act
*31.2	Certification of Chief Financial Officer Pursuant to Rule 13a-14(a) of the Securities Exchange Act
*32	Certifications of Chief Executive Officer and Chief Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
**101.INS	XBRL Instance Document
**101.SCH	XBRL Taxonomy Extension Schema Document
**101.PRE	XBRL Extension Presentation Linkbase Document
**101.LAB	XBRL Taxonomy Extension Label Linkbase Document
**101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
**101.DEF	XBRL Taxonomy Extension Definition Linkbase Document
	(All other exhibits are not applicable.)

++Confidential Treatment Request Granted by the SEC

‡    Reflects Management or Compensatory Contract

*    Filed herewith

**    Submitted electronically with this Report

87

AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

Schedule II - VALUATION AND QUALIFYING ACCOUNTS

			Additions -
	Balance at		Charged to		Deductions -			Balance
	Beginning of		Costs and		See Notes			At End of
	Period		Expenses		Below			Period
	(in millions)
Year Ended December 31, 2012:
Allowance for doubtful accounts	$	5.5	$	2.0	$	1.0	(1)	$	6.5
Allowance for deferred taxes	426.9		80.9		341.7		(3)	166.1
Inventory valuation allowance	26.7		7.9		13.6		(2)	21.0
Year Ended December 31, 2013:
Allowance for doubtful accounts	6.5		2.3		3.9		(1)	4.9
Allowance for deferred taxes	166.1		14.0		16.4			163.7
Inventory valuation allowance	21.0		19.4		13.1		(2)	27.3
Year Ended December 31, 2014:
Allowance for doubtful accounts	4.9		1.3		1.6		(1)	4.6
Allowance for deferred taxes	163.7		13.8		20.6		(4)	156.9
Inventory valuation allowance	27.3		10.6		10.0		(2)	27.9

(1) Uncollectible accounts charged off net of recoveries.

(2) Primarily relates to inventory adjustments for physical quantity discrepancies and write-offs of excess and obsolete inventories.

(3) Primarily relates to the reversal of the valuation allowance against our net U.S. federal deferred tax assets.

(4) Primarily relates to the reversal of a valuation allowance against an expiring net operating loss in China.

88

Signatures

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

(Registrant)

/s/ Michael K. Simonte

Michael K. Simonte

Executive Vice President &

Chief Financial Officer

(Chief Accounting Officer)

Date: February 23, 2015

89

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities on the dates indicated.

Signature	Title	Date
/s/ David C. Dauch	Chairman of the Board, President &	February 23, 2015
David C. Dauch	Chief Executive Officer
/s/ Michael K. Simonte	Executive Vice President &	February 23, 2015
Michael K. Simonte	Chief Financial Officer
/s/ Elizabeth A. Chappell	Director	February 23, 2015
Elizabeth A. Chappell
/s/ Forest J. Farmer	Director	February 23, 2015
Forest J. Farmer
/s/ Steven B. Hantler	Director	February 23, 2015
Steven B. Hantler
/s/ Richard C. Lappin	Director	February 23, 2015
Richard C. Lappin
/s/ James A. McCaslin	Director	February 23, 2015
James A. McCaslin
/s/ William P. Miller II	Director	February 23, 2015
William P. Miller II
/s/ John F. Smith	Director	February 23, 2015
John F. Smith
/s/ Samuel Valenti III	Director	February 23, 2015
Samuel Valenti III
/s/ Thomas K. Walker	Director	February 23, 2015
Thomas K. Walker

90

EX-12

EXHIBIT 12 - COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES

AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

	Year Ended December 31,
	2014			2013			2012			2011			2010
	(Unaudited)
	(in millions, except for ratios)
Fixed Charges:
Interest expense, including amortization of debt issuance costs	$	99.9		$	115.9		$	101.6		$	83.9		$	89.0
Other fixed charges (a)	12.8			11.9			11.0			10.6			6.3
Total fixed charges as defined	$	112.7		$	127.8		$	112.6		$	94.5		$	95.3
Earnings:
Income from continuing operations before income tax expense (benefit)	$	176.7		$	86.3		$	31.5		$	138.1		$	118.8
Total fixed charges as defined	112.7			127.8			112.6			94.5			95.3
Other adjustments (b)	(2.8		)	(5.5		)	(7.1		)	(6.4		)	(1.7		)
Total earnings as defined	$	286.6		$	208.6		$	137.0		$	226.2		$	212.4
Ratio of earnings to fixed charges	2.54			1.63			1.22			2.39			2.23

(a) Includes capitalized interest and estimated interest portion of rents.

(b) Includes fixed charges not deducted in the determination of income from continuing operations before income tax expense (benefit), the amortization of capitalized interest and earnings in equity of affiliates.

EX-21

EXHIBIT 21 - SUBSIDIARIES OF OUR COMPANY

AMERICAN AXLE & MANUFACTURING HOLDINGS, INC.

Subsidiary	Organized Under Laws of	% Owned by Immediate Parent (1)
American Axle & Manufacturing Holdings, Inc.	Delaware
American Axle & Manufacturing, Inc.	Delaware	100	%
Colfor Manufacturing, Inc.	Delaware	100	%
MSP Industries Corporation	Michigan	100	%
AccuGear, Inc.	Delaware	100	%
Oxford Forge, Inc.	Delaware	100	%
DieTronik, Inc.	Delaware	100	%
Total-Drive, LLC	Michigan	100	%
AAM International Holdings, Inc.	Delaware	100	%
AAM Comércio e Participações Ltda.	Brazil	99.99	%	(2)
AAM do Brasil Ltda.	Brazil	99.86	%
Changshu AAM Automotive Driveline High Technology Manufacturing Co., Ltd.	China	100	%
American Axle & Manufacturing Korea, Inc.	Korea	100	%
AAM Services India Private Limited	India	99	%	(2)
AAM Poland Sp. z o. o.	Poland	100	%
Albion Automotive (Holdings) Limited	Scotland	100	%
Albion Automotive Limited	Scotland	100	%
AAM Germany GmbH	Germany	100	%
AAM Pantnagar Axle Private Limited	India	79	%	(2)
AAM India Manufacturing Corporation Private Limited	India	99	%	(2)
American Axle & Manufacturing (Thailand) Co., Ltd.	Thailand	99.99	%	(2)
AAM Luxembourg S.á r.l.	Luxembourg	100	%
AAM International S.á r.l.	Luxembourg	100	%
e-AAM Driveline Systems AB	Sweden	100	%
AAM Investment Management (Shanghai) Co., Ltd.	China	100	%
AAM Mexico Holdings LLC	Delaware	100	%
American Axle & Manufacturing de Mexico Holdings S. de R.L. de C.V.	Mexico	99.99	%	(2)
American Axle & Manufacturing de Mexico S. de R.L. de C.V.	Mexico	99.99	%	(2)
AAM Maquiladora Mexico S. de R.L. de C.V.	Mexico	99.99	%	(2)

(1) All subsidiaries set forth herein are reported in our financial statements through consolidations; there are no subsidiaries omitted from this list.

(2) Remaining shares owned by the Company or its subsidiaries.

EX-23

EXHIBIT 23 - CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Amendment No.1 to Registration Statement No. 333- 41976 on Form S-8 and Registration Statement No. 333-195700 on Form S-3ASR of our report dated February 23, 2015, relating to the financial statements and financial statement schedule of American Axle & Manufacturing Holdings, Inc., and of our report dated February 23, 2015 relating to internal control over financial reporting (which report expresses an adverse opinion on the effectiveness of American Axle & Manufacturing Holdings, Inc.'s internal control over financial reporting because of a material weakness) appearing in this Annual Report on Form 10-K of American Axle & Manufacturing Holdings, Inc. for the year ended December 31, 2014.

/s/ DELOITTE & TOUCHE LLP

DELOITTE & TOUCHE LLP

Detroit, Michigan

February 23, 2015

EX-31.1

EXHIBIT 31.1 – CERTIFICATION PURSUANT TO RULE 13a-14(a) OF THE SECURITIES EXCHANGE ACT

I, David C. Dauch, certify that:

1. I have reviewed this Annual Report on Form 10-K of American Axle & Manufacturing Holdings, Inc;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: February 23, 2015

/s/ David C. Dauch

David C. Dauch

Chairman of the Board,

President & Chief Executive Officer

(Principal Executive Officer)

EX-31.2

EXHIBIT 31.2 – CERTIFICATION PURSUANT TO RULE 13a-14(a) OF THE SECURITIES EXCHANGE ACT

I, Michael K. Simonte, certify that:

1. I have reviewed this Annual Report on Form 10-K of American Axle & Manufacturing Holdings, Inc;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: February 23, 2015

/s/ Michael K. Simonte

Michael K. Simonte

Executive Vice President & Chief Financial Officer

(Principal Financial Officer)

EX-32

EXHIBIT 32 - CERTIFICATIONS PURSUANT TO

18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of American Axle & Manufacturing Holdings, Inc. (Issuer) on Form 10-K for the period ending December 31, 2014 as filed with the Securities and Exchange Commission on the date hereof (Report), I, David C. Dauch, Chairman of the Board, President & Chief Executive Officer of the Issuer, and I, Michael K. Simonte, Executive Vice President & Chief Financial Officer of the Issuer, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Issuer.

/s/ David C. Dauch	/s/ Michael K. Simonte
David C. Dauch	Michael K. Simonte
Chairman of the Board, President &	Executive Vice President &
Chief Executive Officer	Chief Financial Officer
February 23, 2015	February 23, 2015

XML

Organization and Basis of Presentation Research and Development (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Research and development expense	$ 103.9	$ 103.4	$ 123.4

XML

Derivatives Derivatives (Details) (Cost of Sales [Member], Cash Flow Hedging [Member], USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cost of Sales [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Location of Gain Reclassified into Net Income	Cost of Goods Sold			Cost of Goods Sold
Derivative instruments, gain reclassified from accumulated OCI into income, effective portion, net			$ 0.9	$ 2.8
Loss Expected to be Reclassified During the Next 12 Months		$ (7.2)

XML

Long-Term Debt Long-term Debt Instruments (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 10, 2009	Mar. 01, 2013	Feb. 27, 2007	Nov. 03, 2011	Sep. 17, 2012
Debt Instrument [Line Items]
Debt		$ 1,536.4	$ 1,559.1
Current portion of long-term debt		13.0	0
Long-term debt and capital lease obligations		1,523.4	1,559.1
Debt issuance costs		0.3	16.7	10.6
Amended Revolving Facility, interest rate description		Borrowings under the revolving credit facility and term facility bear interest at rates based on adjusted LIBOR or an alternate base rate, plus an applicable margin. The applicable margin for LIBOR-based loans will be between 1.5% and 3.0%.
Line of credit facility, reduction in borrowing capacity, termination of loan facility	72.8
Write off of deferred debt issuance cost	0.5
Repayments of long-term debt		27.0	652.0	299.1
Debt refinancing and redemption costs		0	36.8	19.8
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility, amount outstanding		0	0
Amended revolving facility, maximum borrowing capacity		523.5
Amended revolving facility, remaining borrowing capacity		505.5
Amended revolving facility, standby letters of credit issued against the facility		18.0
Secured Debt [Member] | Loans Payable [Member]
Debt Instrument [Line Items]
Long-term debt		142.5	150.0
Debt Instrument, Periodic Payment, Principal		7.5
Amended revolving facility, maximum borrowing capacity		150.0
Debt issuance costs		0.1	6.9	1.7
Secured Debt [Member] | 9.25% Notes [Member]
Debt Instrument [Line Items]
Debt instrument, face amount					425.0
Debt instrument, interest rate, stated percentage		9.25%
Debt instrument, original discount amount					5.5
9.25% Notes, percentage redeemed				10.00%
9.25% Notes, premium percentage applicable to voluntary redemption during the period				103.00%
Repayments of long-term debt			340.0	42.5
Debt instrument, early redemption premium			18.9	1.3
Debt refinancing and redemption costs			6.7	1.0
Debt instrument, redemption amount			190.0
Debt instrument, repurchased face amount				42.5
Unsecured Debt [Member] | 7.875% Notes [Member]
Debt Instrument [Line Items]
Debt instrument, face amount							300.0
Debt instrument, interest rate, stated percentage		7.875%
Debt instrument, early redemption premium	8.5
Debt instrument, tender offer, fees	0.1
Debt instrument, repurchased face amount						300.0
Unsecured Debt [Member] | 7.75% Notes [Member]
Debt Instrument [Line Items]
Long-term debt		200.0	200.0
Debt instrument, face amount								200.0
Debt instrument, interest rate, stated percentage		7.75%
Unsecured Debt [Member] | 6.625% Notes [Member]
Debt Instrument [Line Items]
Long-term debt		550.0	550.0
Debt issuance costs				0
Debt instrument, face amount									550.0
Debt instrument, interest rate, stated percentage		6.625%
Unsecured Debt [Member] | 5.25% Notes [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage		0.00%
Debt instrument, repurchased face amount				250.0
Unsecured Debt [Member] | 6.25% Notes [Member]
Debt Instrument [Line Items]
Long-term debt		400.0	400.0
Debt issuance costs			6.6
Debt instrument, interest rate, stated percentage		6.25%
Unsecured Debt [Member] | 5.125% Notes [Member]
Debt Instrument [Line Items]
Long-term debt		200.0	200.0
Debt issuance costs		0.2	3.1
Debt instrument, interest rate, stated percentage		5.125%
Foreign Credit Facilities [Member]
Debt Instrument [Line Items]
Line of credit facility, amount outstanding		38.9	53.8
Foreign Credit Facilities, Remaining Borrowing Capacity		51.1
Capital Lease Obligations [Member]
Debt Instrument [Line Items]
Capital lease obligations		5.0	5.3
Debt Repurchase [Member] | Unsecured Debt [Member] | 7.875% Notes [Member]
Debt Instrument [Line Items]
Debt refinancing and redemption costs	$ 2.1

XML

Employee Benefit Plans Deferred Compensation Plan (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Sep. 30, 2013
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Deferred compensation distributions	$ 1.2	$ 6.1	$ 0.8
Increase (decrease) in deferred compensation	0.3	0.8	1.3
Deferred compensation arrangement with individuals, recorded liability	5.6	6.2
Board of Directors Chairman [Member]
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Deferred compensation arrangement with individual, distributions paid				5.6
Increase (decrease) in deferred compensation		(5.6)
Proceeds from life insurance policies		$ 5.0

XML

Derivatives Sales, Receivables and Postretirement Cost Sharing Asset by Major Customer (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenue, Major Customer [Line Items]
Total GM postretirement cost sharing asset	$ 287.8	$ 255.9
General Motors [Member]
Revenue, Major Customer [Line Items]
Entity-wide revenue, major customer, percentage	68.00%	71.00%	73.00%
Fair value, concentration of risk, accounts receivable	343.1	278.5
Chrysler Group LLC [Member]
Revenue, Major Customer [Line Items]
Entity-wide revenue, major customer, percentage	18.00%	12.00%	10.00%
Fair value, concentration of risk, accounts receivable	$ 99.3	$ 85.9

XML

Income Taxes Rate Reconciliation (Details)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Effective Income Tax Rate Reconciliation, Tax Contingency, Percent	13.00%	(0.50%)	(5.20%)
Effective income tax rate reconciliation, Federal statutory	35.00%	35.00%	35.00%
Effective income tax rate reconciliation, foreign income taxes	(25.10%)	(48.50%)	(85.00%)
Effective income tax rate reconciliation, change in enacted tax rate	0.00%	(9.90%)	0.00%
Effective income tax rate reconciliation, State and local	0.10%	0.20%	3.50%
Effective Income Tax Rate Reconciliation, Tax Credit, Percent	(11.40%)	0.00%	0.00%
Effective income tax rate reconciliation, valuation allowance	4.50%	12.40%	(985.00%)
Effective income tax rate reconciliation, U.S. tax on unremitted foreign earnings	1.90%	(0.20%)	(29.50%)
Effective income tax rate reconciliation, other	1.10%	2.00%	2.00%
Effective income tax rate	19.10%	(9.50%)	(1064.20%)

XML

Organization and Basis of Presentation Debt Issuance Costs (Narrative) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Unamortized debt issuance costs	$ 29.5	$ 35.6

XML

Reclassifications out of Accumulated Other Comprehensive Income Reclassifications out of Accumulated Other Comprehensive Income (Tables)

12 Months Ended

Dec. 31, 2014

Reclassifications out of Accumulated Other Comprehensive Income [Abstract]

Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]

Reclassification adjustments and other activity impacting accumulated other comprehensive income (loss) (AOCI) during the year ended December 31, 2014 and December 31, 2013 are as follows (in millions):

	Defined Benefit Plans				Foreign Currency Translation Adjustments			Unrecognized Gain (Loss) on Derivatives				Total
Balance at December 31, 2013	$	(197.9	)		$	(18.6	)	$	0.3			$	(216.2	)
Other comprehensive loss before reclassifications	(68.1		)	(a)	(30.3		)	(6.8		)		(105.2		)
Amounts reclassified from accumulated other comprehensive income (loss) into net income	25.4			(a)(b)(d)	—			(0.9		)	(c)	24.5
Net current period other comprehensive loss	(42.7		)		(30.3		)	(7.7		)		(80.7		)
Balance at December 31, 2014	$	(240.6	)		$	(48.9	)	$	(7.4	)		$	(296.9	)
	Defined Benefit Plans				Foreign Currency Translation Adjustments			Unrecognized Gain on Derivatives				Total
Balance at December 31, 2012	$	(274.5	)		$	7.6		$	2.3			$	(264.6	)
Other comprehensive income (loss) before reclassifications	67.7			(a)	(26.2		)	0.8				42.3
Amounts reclassified from accumulated other comprehensive income (loss) into net income	8.9			(a)(b)	—			(2.8		)	(c)	6.1
Net current period other comprehensive income (loss)	76.6				(26.2		)	(2.0		)		48.4
Balance at December 31, 2013	$	(197.9	)		$	(18.6	)	$	0.3			$	(216.2	)
(a) These amounts are net of tax of $36.6 million and $(13.4) million for the other comprehensive loss before reclassifications and the amounts reclassified from AOCI, respectively, for the year ended December 31, 2014, and $(36.7) million and $(4.6) million, respectively, for the year ended December 31, 2013.
(b) The net amount reclassified from AOCI included $23.6 million in cost of goods sold (COGS) and $1.8 million in selling, general & administrative expenses (SG&A) for the year ended December 31, 2014 and $4.7 million in COGS and $4.2 million in SG&A for the year ended December 31, 2013.
(c) The amounts reclassified from AOCI are included in COGS.
(d) Includes a reclassification of $23.1 million, net of tax, in the fourth quarter of 2014, related to our terminated vested lump-sum pension payout in the U.S.

XML

Income Taxes Refundable Income Taxes and Income Taxes Payable (Narrative) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Refundable income taxes	$ 5.6	$ 4.9
Accrued income taxes, current	3.0	2.6
Value added tax payable	$ 36.1	$ 38.3

XML

Stock Based Compensation Stock Options - Range of Exercise Prices (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock Options Outstanding	0.9
Weighted-average Exercise Price Per Share	$ 20.66	$ 29.22	$ 27.08	$ 26.95
Weighted-average Contractual Life	2 years
Stock Options Exercisable	0.9
Weighted-average Exercise Price Per Share	$ 20.66	$ 29.22	$ 28.02
Share-based Compensation Arrangement by Share-based Payment Award, Options, Range of Exercise Prices, $9.19-$15.58 [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock Options Outstanding	0.4
Weighted-average Exercise Price Per Share	$ 13.22
Weighted-average Contractual Life	3 years 2 months
Stock Options Exercisable	0.4
Weighted-average Exercise Price Per Share	$ 13.22
Share-based Compensation Arrangement by Share-based Payment Award, Options, Range of Exercise Prices, $19.54-$26.65 [Member] [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock Options Outstanding	0.5
Weighted-average Exercise Price Per Share	$ 26.05
Weighted-average Contractual Life	1 year 2 months
Stock Options Exercisable	0.5
Weighted-average Exercise Price Per Share	$ 26.05

XML

Commitments and Contingencies Legal Proceedings (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012
Defined benefit plan, cost of providing special or contractual termination benefits recognized during period	$ 28.7

XML

Fair Value Fair Value of Debt (Details) (Fair Value, Inputs, Level 2 [Member], USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Reported Value Measurement [Member] | Line of Credit [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	$ 0	$ 0
Reported Value Measurement [Member] | Loans Payable [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	142.5	150.0
Reported Value Measurement [Member] | 7.75% Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	200.0	200.0
Reported Value Measurement [Member] | 6.625% Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	550.0	550.0
Reported Value Measurement [Member] | 6.25% Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	400.0	400.0
Reported Value Measurement [Member] | 5.125% Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	200.0	200.0
Estimate of Fair Value Measurement [Member] | Line of Credit [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	0	0
Estimate of Fair Value Measurement [Member] | Loans Payable [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	141.1	147.8
Estimate of Fair Value Measurement [Member] | 7.75% Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	224.0	227.5
Estimate of Fair Value Measurement [Member] | 6.625% Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	583.0	578.9
Estimate of Fair Value Measurement [Member] | 6.25% Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	419.0	423.0
Estimate of Fair Value Measurement [Member] | 5.125% Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	$ 202.6	$ 206.0

XML

Income Taxes Income Before Income Taxes (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
U.S. income (loss)	$ 12.0	$ (23.8)	$ (6.0)
Non-U.S. income	164.7	110.1	37.5
Income before income taxes	$ 176.7	$ 86.3	$ 31.5

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Earnings Per Share Earnings Per Share (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net income attributable to AAM	$ 13.2	$ 44.0	$ 52.2	$ 33.6	$ 29.8	$ 31.6	$ 25.8	$ 7.3	$ 143.0	$ 94.5	$ 367.7
Participating Securities, Distributed and Undistributed Earnings (Loss), Basic									(2.9)	(1.9)	(2.6)
Net Income (Loss) Available to Common Stockholders, Basic									140.1	92.6	365.1
Undistributed Earnings (Loss) Allocated to Participating Securities, Diluted									0	0	0
Net Income (Loss) Available to Common Stockholders, Diluted									140.1	92.6	365.1
weighted average common shares and participating securities outstanding - basic									77.3	76.7	75.3
Participating securities - basic									(1.6)	(1.5)	(0.5)
Basic shares outstanding - weighted average shares outstanding									75.7	75.2	74.8
Effect of dilutive securities - dilutive stock options									0.2	0.1	0.1
Diluted shares outstanding - adjusted weighted-average shares after assumed conversions									75.9	75.3	74.9
Basic earnings per share	$ 0.17	$ 0.57	$ 0.67	$ 0.44	$ 0.39	$ 0.41	$ 0.34	$ 0.10	$ 1.85	$ 1.23	$ 4.88
Diluted earnings per share	$ 0.17	$ 0.57	$ 0.67	$ 0.44	$ 0.39	$ 0.41	$ 0.34	$ 0.10	$ 1.85	$ 1.23	$ 4.87
Retained Earnings [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net income attributable to AAM									$ 143.0	$ 94.5	$ 367.7

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Income Taxes Current Deferred Tax Assets and Liabilities Recognized in Balance Sheet (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current deferred tax asset, net	$ 40.1	$ 36.3
Domestic [Member]
Current deferred tax asset, net	27.0	17.1
Foreign [Member]
Current deferred tax asset, net	$ 13.1	$ 19.2

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Earnings Per Share Antidilutive Shares (Narrative) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount	0.5	2.0	3.3
Earnings per share, range of exercise prices of stock options excluded from the calculation of diluted EPS, lower end of range	$ 19.54	$ 19.54	$ 15.58
Earnings per share, range of exercise prices of stock options excluded from the calculation of diluted EPS, upper end of range	$ 26.65	$ 40.83	$ 40.83

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Income Taxes Components of Provision for Income Taxes (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Current
Federal	$ 0.6	$ (1.3)	$ (3.3)
Other state and local	0.1	0.1	1.1
Foreign	44.2	12.1	10.2
Total current	44.9	10.9	8.0
Deferred
Federal	(11.6)	(9.3)	(347.1)
Foreign	0.4	(9.8)	3.9
Deferred Income Tax Expense (Benefit)	(11.2)	(19.1)	(343.2)
Total deferred	20.1
Income tax expense (benefit)	33.7	(8.2)	(335.2)
Additions to Income Tax Expense for Changes to Prior Year Uncertain Tax Positions	10.5	6.1	0
Income tax expense (benefit), change in estimate	3.4	4.8
Income tax expense (benefit), continuing operations, adjustment of deferred tax (asset) liability		8.5
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations		1.5
Income tax expense (benefit), other		(3.3)
Unrecognized tax benefits, decrease resulting from cash and non-cash settlements with taxing authorities		8.4
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities		4.7	(4.4)
Net Tax Expense from Amendment of State Tax Returns due to Settlement of Federal Income Tax Audits			1.3
Tax positions relating to transfer pricing [Member]
Deferred
Additions to Income Tax Expense for Changes to Prior Year Uncertain Tax Positions	$ 23.1
Mexico [Member]
Deferred
Previously enacted tax rate		17.50%
Newly enacted tax rate		30.00%

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Employee Benefit Plans Terminated Vested Lump Sum Payout Offer (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Assets Transferred to (from) Plan	$ 104.2

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Long-Term Debt Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2014

Long Term Debt and Lease Obligations [Abstract]

Schedule of Long-term Debt Instruments [Table Text Block]

Long-term debt consists of the following:

	December 31,
	2014		2013
	(in millions)
Revolving Credit Facility	$	—	$	—
Term Facility	142.5		150.0
7.75% Notes	200.0		200.0
6.625% Notes	550.0		550.0
6.25% Notes	400.0		400.0
5.125% Notes	200.0		200.0
Foreign credit facilities	38.9		53.8
Capital lease obligations	5.0		5.3
Debt	1,536.4		1,559.1
Less: Current portion of long-term debt	13.0		—
Long-term debt	$	1,523.4	$	1,559.1

Schedule of Maturities of Long-term Debt [Table Text Block]

2015	$	35.2
2016	17.1
2017	19.1
2018	109.2
2019	403.4
Thereafter	952.4
Total	$	1,536.4

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Long-Term Debt Foreign Credit Facilities (Narrative) (Details) (Foreign Credit Facilities [Member], USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Foreign Credit Facilities [Member]
Line of Credit Facility [Line Items]
Line of credit facility, amount outstanding	$ 38.9	$ 53.8
Foreign Credit Facilities, Remaining Borrowing Capacity	$ 51.1

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Organization and Basis of Presentation Property, Plant, & Equipment (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Depreciation and Tooling Amortization	$ 166.5	$ 151.8	$ 130.9

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Stock Based Compensation Performance Awards (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Stock-based Compensation [Abstract]
Performance awards, liability at period end	$ 3.7
Allocated Share-based Compensation Expense, Net of Tax	$ 1.4	$ 7.9	$ 3.0

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Supplemental Guarantor Condensed Consolidating Financial Statements 2014 and 2013 Balance Sheets (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Current Assets
Cash and cash equivalents	$ 249.2	$ 154.0	$ 62.4	$ 169.2
Accounts receivable, net	532.7	458.5
Intercompany receivables	0	0
Inventories, net	248.8	261.8
Other current assets	108.8	122.0
Total current assets	1,139.5	996.3
Property, plant and equipment, net	1,061.1	1,058.5
Goodwill	155.0	156.4	156.4
Intercompany notes and accounts receivable	0	0
Other assets and deferred charges	903.6	816.3
Investment in subsidiaries	0	0
Total assets	3,259.2	3,027.5
Current Liabilities
Current portion of long-term debt	13.0	0
Accounts Payable	444.3	437.4
Intercompany payables	0	0
Other current liabilities	229.9	221.3
Total current liabilities	687.2	658.7
Intercompany notes and accounts payable (receivable)	0	0
Long-term debt	1,523.4	1,559.1
Investment in subsidiaries obligation	0	0
Other liabilities, noncurrent	935.2	769.2
Total liabilities	3,145.8	2,987.0
Total AAM stockholders' equity (deficit)	113.4	40.5
Noncontrolling interest in subsidiaries	0	0
Total liabilities and stockholders' equity	3,259.2	3,027.5
Holdings [Member]
Current Assets
Cash and cash equivalents	0	0	0	0
Accounts receivable, net	0	0
Intercompany receivables	0	0
Inventories, net	0	0
Other current assets	0	0
Total current assets	0	0
Property, plant and equipment, net	0	0
Goodwill	0	0
Intercompany notes and accounts receivable	0	0
Other assets and deferred charges	0	0
Investment in subsidiaries	433.8	363.7
Total assets	433.8	363.7
Current Liabilities
Current portion of long-term debt	0
Accounts Payable	0	0
Intercompany payables	0
Other current liabilities	0	0
Total current liabilities	0	0
Intercompany notes and accounts payable (receivable)	320.4	323.2
Long-term debt	0	0
Investment in subsidiaries obligation	0	0
Other liabilities, noncurrent	0	0
Total liabilities	320.4	323.2
Total AAM stockholders' equity (deficit)	113.4	40.5
Total liabilities and stockholders' equity	433.8	363.7
AAM Inc. [Member]
Current Assets
Cash and cash equivalents	69.7	36.9	10.6	83.7
Accounts receivable, net	137.5	102.7
Intercompany receivables	231.0	180.5
Inventories, net	64.9	62.4
Other current assets	53.6	43.8
Total current assets	556.7	426.3
Property, plant and equipment, net	230.0	239.8
Goodwill	0	0
Intercompany notes and accounts receivable	509.4	327.0
Other assets and deferred charges	736.6	671.7
Investment in subsidiaries	1,134.6	1,240.1
Total assets	3,167.3	2,904.9
Current Liabilities
Current portion of long-term debt	9.4
Accounts Payable	127.3	106.2
Intercompany payables	177.0	117.4
Other current liabilities	121.0	120.4
Total current liabilities	434.7	344.0
Intercompany notes and accounts payable (receivable)	6.9	3.7
Long-term debt	1,483.1	1,500.0
Investment in subsidiaries obligation	0	0
Other liabilities, noncurrent	808.8	693.5
Total liabilities	2,733.5	2,541.2
Total AAM stockholders' equity (deficit)	433.8	363.7
Total liabilities and stockholders' equity	3,167.3	2,904.9
Guarantor Subsidiaries of Certain Notes [Member]
Current Assets
Cash and cash equivalents	0	0	0	0
Accounts receivable, net	23.9	25.6
Intercompany receivables	174.1	116.6
Inventories, net	32.3	34.2
Other current assets	2.6	3.2
Total current assets	232.9	179.6
Property, plant and equipment, net	87.9	83.0
Goodwill	147.9	147.8
Intercompany notes and accounts receivable	219.1	201.5
Other assets and deferred charges	45.7	44.8
Investment in subsidiaries	0	0
Total assets	733.5	656.7
Current Liabilities
Current portion of long-term debt	0
Accounts Payable	38.9	44.5
Intercompany payables	105.3	98.6
Other current liabilities	4.4	4.1
Total current liabilities	148.6	147.2
Intercompany notes and accounts payable (receivable)	0	0
Long-term debt	4.9	5.3
Investment in subsidiaries obligation	53.8	15.2
Other liabilities, noncurrent	0.6	0.5
Total liabilities	207.9	168.2
Total AAM stockholders' equity (deficit)	525.6	488.5
Total liabilities and stockholders' equity	733.5	656.7
Non-Guarantor Subsidiaries [Member]
Current Assets
Cash and cash equivalents	179.5	117.1	51.8	85.5
Accounts receivable, net	371.3	330.2
Intercompany receivables	10.0	9.2
Inventories, net	151.6	165.2
Other current assets	52.6	75.0
Total current assets	765.0	696.7
Property, plant and equipment, net	743.2	735.7
Goodwill	7.1	8.6
Intercompany notes and accounts receivable	0	0
Other assets and deferred charges	121.3	99.8
Investment in subsidiaries	0	0
Total assets	1,636.6	1,540.8
Current Liabilities
Current portion of long-term debt	3.6
Accounts Payable	278.1	286.7
Intercompany payables	132.8	90.3
Other current liabilities	104.5	96.8
Total current liabilities	519.0	473.8
Intercompany notes and accounts payable (receivable)	401.2	201.6
Long-term debt	35.4	53.8
Investment in subsidiaries obligation	0	0
Other liabilities, noncurrent	125.8	75.2
Total liabilities	1,081.4	804.4
Total AAM stockholders' equity (deficit)	555.2	736.4
Total liabilities and stockholders' equity	1,636.6	1,540.8
Consolidation, Eliminations [Member]
Current Assets
Cash and cash equivalents	0	0	0	0
Accounts receivable, net	0	0
Intercompany receivables	(415.1)	(306.3)
Inventories, net	0
Other current assets	0	0
Total current assets	(415.1)	(306.3)
Property, plant and equipment, net	0	0
Goodwill	0	0
Intercompany notes and accounts receivable	(728.5)	(528.5)
Other assets and deferred charges	0	0
Investment in subsidiaries	(1,568.4)	(1,603.8)
Total assets	(2,712.0)	(2,438.6)
Current Liabilities
Current portion of long-term debt	0
Accounts Payable	0	0
Intercompany payables	(415.1)	(306.3)
Other current liabilities	0	0
Total current liabilities	(415.1)	(306.3)
Intercompany notes and accounts payable (receivable)	(728.5)	(528.5)
Long-term debt	0	0
Investment in subsidiaries obligation	(53.8)	(15.2)
Other liabilities, noncurrent	0	0
Total liabilities	(1,197.4)	(850.0)
Total AAM stockholders' equity (deficit)	(1,514.6)	(1,588.6)
Total liabilities and stockholders' equity	$ (2,712.0)	$ (2,438.6)

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Organization and Basis of Presentation Revision of Prior Period Financial Statements (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Deferred income taxes	$ 40.2	$ 34.9
Stockholders' Equity Attributable to Parent	113.4	40.5
Restatement Adjustment [Member]
Deferred income taxes		1.5
Accounts Payable		8.4	8.4
Stockholders' Equity Attributable to Parent		6.9
Scenario, Previously Reported [Member]
Deferred income taxes		36.4
Accounts Payable		445.8
Stockholders' Equity Attributable to Parent		$ 181.3

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Long-Term Debt Interest Expense and Investment Income (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Interest Expense & Investment Income (Narrative) [Abstract]
Interest Expense	$ 99.9	$ 115.9	$ 101.6
Interest Costs Capitalized	5.8	6.6	8.2
Long-term Debt, Weighted Average Interest Rate	6.40%	6.30%	8.00%
Investment Income, Interest	$ 2.1	$ 0.6	$ 0.6

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Employee Benefit Plans Accumulated Benefit Obligation (Narrative) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, accumulated benefit obligation	$ 723.9	$ 744.5
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets, Aggregate Accumulated Benefit Obligation	586.5
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets, Aggregate Projected Benefit Obligation	598.3
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets, Aggregate Fair Value of Plan Assets	$ 496.3

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Employee Benefit Plans Amounts Recognized in the Balance Sheet (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
GM postretirement cost sharing asset, current	$ 13.3
GM postretirement cost sharing asset, noncurrent	274.5	242.0
Total GM postretirement cost sharing asset	287.8	255.9
Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Noncurrent assets	6.9	9.3
Defined benefit pension plan liabilities, current	(3.0)	(2.3)
Defined benefit pension plan, liabilities, noncurrent	(99.0)	(49.0)
Defined benefit plan, amounts recognized in balance sheet	(95.1)	(42.0)
Other Postretirement Benefit Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Noncurrent assets	0	0
Postemployment benefits liability, current	(29.6)	(30.8)
Other postretirement defined benefit plan, liabilities, noncurrent	(625.1)	(547.1)
Other postretirement defined benefit plan, liabilities	(654.7)	(577.9)
Change in Benefit Obligation [Member] | Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Change in GM Portion of OPEB Obligation	0	0
Change in Benefit Obligation [Member] | Other Postretirement Benefit Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Change in GM Portion of OPEB Obligation	$ 31.8	$ (17.0)

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Organization and Basis of Presentation Currency Translation (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Foreign Currency [Abstract]
Foreign Currency Transaction Gain (Loss), Realized	$ (6.4)	$ (4.2)	$ (6.3)

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Organization and Basis of Presentation

12 Months Ended

Dec. 31, 2014

Organization and Basis of Presentation [Abstract]

Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block]

ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

ORGANIZATION American Axle & Manufacturing Holdings, Inc. (Holdings) and its subsidiaries (collectively, we, our, us or AAM) is a Tier I supplier to the automotive industry. We manufacture, engineer, design and validate driveline and drivetrain systems and related components and chassis modules for light trucks, sport utility vehicles (SUVs), passenger cars, crossover vehicles and commercial vehicles. Driveline and drivetrain systems include components that transfer power from the transmission and deliver it to the drive wheels. Our driveline, drivetrain and related products include axles, chassis modules, driveshafts, power transfer units, transfer cases, chassis and steering components, driveheads, transmission parts, electric drive systems and metal-formed products. In addition to locations in the United States (U.S.) (Michigan, Ohio, Indiana and Pennsylvania), we also have offices or facilities in Brazil, China, Germany, India, Japan, Luxembourg, Mexico, Poland, Scotland, South Korea, Sweden and Thailand.

PRINCIPLES OF CONSOLIDATION We include the accounts of Holdings and its subsidiaries in our consolidated financial statements. We eliminate the effects of all intercompany transactions, balances and profits in our consolidation.

REVISION OF PRIOR PERIOD FINANCIAL STATEMENTS In connection with the preparation of our consolidated financial statements for the year ended December 31, 2014, we determined that entries recorded in the third quarter of 2014 to reduce certain accrued accounts payable balances by $8.4 million were previously recorded as a reduction of cost of goods sold but should have been recorded as an adjustment to opening accumulated deficit because the amounts giving rise to the correction originated in periods prior to January 1, 2012.

In accordance with ASC 250 Accounting Changes and Error Corrections as well as the SEC's Staff Accounting Bulletin No. 99, Materiality, we evaluated the materiality of this error on prior period financial statements and determined that it did not result in a material misstatement to the financial conditions, results of operations, or cash flows for any of the periods presented.

We also determined that the effect of recording the correction during the third quarter of 2014 was material to the financial statements for the three months ended September 30, 2014. As a result, prior period financial statements have been revised in accordance with ASC 250 and the SEC's Staff Accounting Bulletin No. 108, Considering the Effects of Prior Year Misstatements when Quantifying Misstatements in Current Year Financial Statements, and accumulated deficit at January 1, 2012 was reduced by $6.9 million. Consequently, the previously reported December 31, 2013 balances for accounts payable of $445.8 million, accumulated deficit of $181.3 million and current deferred income tax assets of $36.4 million were reduced by $8.4 million, $6.9 million and $1.5 million, respectively.

REVENUE RECOGNITION We recognize revenue when products are shipped to our customers and title transfers under standard commercial terms or when realizable in accordance with our commercial agreements. If we are uncertain as to whether we will be successful collecting a balance in accordance with our understanding of a commercial agreement, we do not recognize the revenue or cost recovery until such time as the uncertainty is removed.

In the first quarter of 2014, we reached an agreement with General Motors Company (GM) to increase installed capacity and adjust product mix for our largest vehicle program. As a result of this agreement, we received $32.8 million in 2014 and recorded the payments as deferred revenue. We will recognize this deferred revenue into sales over the life of the program on a straight line basis over approximately 5 years, which is the period we expect GM to benefit from this capacity and mix change. In 2014, we recognized revenue of $5.4 million related to this agreement. As of December 31, 2014, we have $6.9 million of deferred revenue that is classified as a current liability and $20.5 million of deferred revenue that is recorded as a noncurrent liability on our Consolidated Balance Sheet.

Also in the first quarter of 2014, we reached an agreement with GM to recover certain costs related to the delay of another major product program. We received $9.3 million in 2014 related to this agreement and initially recorded deferred revenue of $9.3 million. We will recognize this deferred revenue into sales over the life of the program on a straight-line basis over approximately 8 years, which is the period we expect GM to benefit from this agreement. We began recognizing this deferred revenue as revenue in the third quarter of 2014 when this program launched in certain markets. In 2014, we recognized revenue of $0.5 million related to this agreement. As of December 31, 2014, we have recorded deferred revenue of $8.8 million, $1.1 million of which is classified as a current liability and $7.7 million which is recorded as a noncurrent liability on our Consolidated Balance Sheet.

In 2009, we entered into a settlement and commercial agreement (2009 Settlement and Commercial Agreement) with General Motors Company (GM). As part of this agreement, we received $110.0 million from GM, of which we recorded $79.7 million as deferred revenue.  As of December 31, 2014, our deferred revenue related to the 2009 Settlement and Commercial Agreement is $37.5 million, $8.0 million of which is classified as a current liability and $29.5 million of which is recorded as a noncurrent liability on our Consolidated Balance Sheet.  We recognize this deferred revenue into revenue on a straight-line basis over 120 months, which ends September 2019 and is the period that we expect GM to benefit under the 2009 Settlement and Commercial Agreement.  We recognized revenue of $8.0 million, in 2014, 2013 and 2012 related to this agreement.

As of December 31, 2014, the majority of the remaining deferred revenue primarily relates to customer payments to implement capacity programs, which is generally recognized into revenue over the life of these programs. We recognized $7.5 million, $10.5 million and $13.1 million of revenue for these programs in 2014, 2013 and 2012, respectively.

RESEARCH AND DEVELOPMENT (R&D) COSTS We expense R&D, as incurred, in selling, general and administrative expenses on our Consolidated Statement of Income. R&D spending, net of engineering, design and development recoveries, was $103.9 million, $103.4 million and $123.4 million in 2014, 2013 and 2012, respectively.

CASH AND CASH EQUIVALENTS Cash and cash equivalents include all cash balances and highly liquid investments in money market funds with maturities of 90 days or less at the time of purchase.

ACCOUNTS RECEIVABLE The majority of our accounts receivable are due from original equipment manufacturers (OEMs) in the automotive industry and are past due when payment is not received within the stated terms. Trade accounts receivable for our largest customer, GM, are generally due within approximately 50 days from the date of receipt.

Amounts due from customers are stated net of allowances for doubtful accounts. We determine our allowances by considering factors such as the length of time accounts are past due, our previous loss history, the customer's ability to pay its obligation to us, and the condition of the general economy and the industry as a whole. The allowance for doubtful accounts was $4.6 million and $4.9 million as of December 31, 2014 and 2013, respectively. We write-off accounts receivable when they become uncollectible.

CUSTOMER TOOLING AND PRE-PRODUCTION COSTS RELATED TO LONG-TERM SUPPLY AGREEMENTS Engineering, R&D, and other pre-production design and development costs for products sold on long-term supply arrangements are expensed as incurred unless we have a contractual guarantee for reimbursement from the customer. Costs for tooling used to make products sold on long-term supply arrangements for which we have either title to the assets or the noncancelable right to use the assets during the term of the supply arrangement are capitalized in property, plant and equipment. Capitalized items and customer receipts in excess of tooling costs specifically related to a supply arrangement are amortized over the shorter of the term of the arrangement or over the estimated useful lives of the related assets.

INVENTORIES We state our inventories at the lower of cost or market.  The cost of our inventories is determined using the FIFO method.  When we determine that our gross inventories exceed usage requirements, or if inventories become obsolete or otherwise not saleable, we record a provision for such loss as a component of our inventory accounts.

Inventories consist of the following:

	December 31,
	2014			2013
	(in millions)
Raw materials and work-in-progress	$	243.8		$	263.4
Finished goods	32.9			25.7
Gross inventories	276.7			289.1
Inventory valuation reserves	(27.9		)	(27.3		)
Inventories, net	$	248.8		$	261.8

PROPERTY, PLANT AND EQUIPMENT We state property, plant and equipment, including amortizable tooling, at historical cost, as adjusted for impairments. Construction in progress includes costs incurred for the construction of buildings and building improvements, and machinery and equipment in process. Repair and maintenance costs that do not extend the useful life or otherwise improve the utility of the asset beyond its existing useful state are expensed in the period incurred.

We record depreciation and tooling amortization on the straight-line method over the estimated useful lives of the depreciable assets. Depreciation and tooling amortization amounted to $166.5 million, $151.8 million and $130.9 million in 2014, 2013 and 2012, respectively.

Property, plant and equipment consists of the following:

	Estimated	December 31,
	Useful Lives	2014			2013
	(years)	(in millions)
Land		$	26.2		$	29.5
Land improvements	10-15	19.0			18.9
Buildings and building improvements	15-40	314.3			306.6
Machinery and equipment	3-12	1,770.7			1,648.6
Construction in progress		91.4			95.1
		2,221.6			2,098.7
Accumulated depreciation and amortization		(1,160.5		)	(1,040.2		)
Property, plant and equipment, net		$	1,061.1		$	1,058.5

IMPAIRMENT OF LONG-LIVED ASSETS When impairment indicators exist, we evaluate the carrying value of long-lived assets for potential impairment. We consider projected future undiscounted cash flows, trends and other circumstances in making such estimates and evaluations. If impairment is deemed to exist, the carrying amount of the asset is adjusted based on its fair value. Recoverability of assets “held for use” is determined by comparing the forecasted undiscounted cash flows of the operations to which the assets relate to their carrying amount. When the carrying value of an asset group exceeds its fair value and is therefore nonrecoverable, those assets are written down to fair value. Fair value is determined based on market prices, when available, or a discounted cash flow analysis performed using management estimates.

GOODWILL We record goodwill when the purchase price of acquired businesses exceeds the value of their identifiable net tangible and intangible assets acquired. We periodically evaluate goodwill for impairment in accordance with the accounting guidance for goodwill and other indefinite-lived intangibles. We completed impairment tests in 2014 and 2013 and concluded that there was no impairment of our goodwill. The following table provides a reconciliation of changes in goodwill:

	December 31,
	2014			2013
	(in millions)
Beginning balance	$	156.4		$	156.4
Foreign currency translation	(1.4		)	—
Ending balance	$	155.0		$	156.4

INTANGIBLE ASSETS We are currently in the process of testing, validating and launching global enterprise resource planning (ERP) systems, at certain key locations, to upgrade many of our existing operating and financial systems. In connection with the development of these ERP systems, we have recorded an intangible asset of $19.2 million on our Consolidated Balance Sheet as of December 31, 2014. The intangible asset is related to costs incurred to obtain software licenses from a third party, as well as costs to design and develop this internal-use software. We incurred and capitalized $11.4 million and $7.8 million of these costs in 2014 and 2013, respectively. This intangible asset is classified as other assets and deferred charges on our Consolidated Balance Sheet and will be amortized over the estimated useful life of our ERP systems. We recorded $0.4 million and $0.1 million of expense for the amortization of these intangible assets in 2014 and 2013, respectively.

In connection with our e-AAM subsidiary, we have in-process research and development intangible assets which represent the technology that will be utilized in products to be launched in 2016. Accordingly, we will begin amortizing this asset on a straight-line basis at the start of production through the expected life cycle of the related products, which is expected to be approximately 5-7 years. These intangible assets are classified as other assets and deferred charges on our Consolidated Balance Sheet. The following table provides a reconciliation of changes in the carrying value of our in-process research and development intangible assets:

	December 31,
	2014			2013
	(in millions)
Beginning balance	$	7.4		$	7.4
Foreign currency translation	(1.2		)	—
Ending balance	$	6.2		$	7.4

DEBT ISSUANCE COSTS The costs related to the issuance or modification of long-term debt are deferred and amortized into interest expense over the life of each debt issue. As of December 31, 2014 and December 31, 2013, our unamortized debt issuance costs were $29.5 million and $35.6 million, respectively. Deferred amounts associated with the extinguishment of debt are expensed and classified as debt refinancing and redemption costs on our Consolidated Statement of Income.

DERIVATIVES We recognize all derivatives on the balance sheet at fair value and we are not subject to a master netting agreement. If a derivative qualifies under the accounting guidance as a hedge, depending on the nature of the hedge, changes in the fair value of the derivative are either offset against the change in fair value of the hedged asset, liability or firm commitment through earnings or recognized in other comprehensive income until the hedged item is recognized in earnings. The ineffective portion of a derivative's change in fair value, and changes in the fair value of derivatives that do not qualify as hedges, are immediately recognized in earnings. See Note 3 - Derivatives and Risk Management, for more detail on our derivatives.

CURRENCY TRANSLATION We translate the assets and liabilities of our foreign subsidiaries to U.S. dollars at end-of-period exchange rates. We translate the income statement elements of our foreign subsidiaries to U.S. dollars at average-period exchange rates. We report the effect of translation for our foreign subsidiaries that use the local currency as their functional currency as a separate component of stockholders' equity. Gains and losses resulting from the remeasurement of assets and liabilities in a currency other than the functional currency of a subsidiary are reported in current period income. We also report any gains and losses arising from transactions denominated in a currency other than the functional currency of a subsidiary in current period income. These foreign currency gains and losses resulted in a gain of $6.4 million and losses of $4.2 million and $6.3 million, for the years ended 2014, 2013 and 2012, respectively.

USE OF ESTIMATES In order to prepare consolidated financial statements in conformity with accounting principles generally accepted in the United States of America (GAAP), we are required to make estimates and assumptions that affect the reported amounts and disclosures in our consolidated financial statements. Actual results could differ from those estimates.

EFFECT OF NEW ACCOUNTING STANDARDS On January 1, 2014, new accounting guidance became effective regarding financial statement presentation of an unrecognized tax benefit when a net operating loss (NOL) carryforward, a similar tax loss, or a tax credit carryforward exists. The new guidance requires entities to present an unrecognized tax benefit, or a portion of an unrecognized tax benefit, in the financial statements as a reduction to a deferred tax asset for an NOL carryforward, a similar tax loss, or a tax credit carryforward, except when one is not available as of the reporting date or the entity does not intend to use the deferred tax asset for this purpose. This guidance does not affect the tabular reconciliation of the total amounts of unrecognized tax benefits, as the tabular reconciliation presents the gross amount of unrecognized tax benefits. The adoption of this new guidance has had no impact on our consolidated financial statements.

In May 2014, new accounting guidance was issued that outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. The guidance is based on the principle that an entity should recognize revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services.  The guidance also requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments and assets recognized from costs incurred to fulfill a contract.  Entities have the option of using either a full retrospective or a modified retrospective approach for the adoption of the new standard.  This guidance becomes effective for AAM at the beginning of our 2017 fiscal year and early adoption is not permitted.  We are currently assessing the impact that this standard will have on our consolidated financial statements.

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Employee Benefit Plans Pre-tax Amounts Recorded in AOCI (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Impact on accumulated other comprehensive income (loss), curtailment gain (loss)	$ 21.8
Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net actuarial gain (loss)		(215.3)	(194.3)
Net prior service credit (cost)		0.7	0.8
Total amounts recorded		(214.6)	(193.5)
Other Postretirement Benefit Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net actuarial gain (loss)		(35.7)	4.9
Net prior service credit (cost)		15.4	18.1
Total amounts recorded		(20.3)	23.0
Pension and other postretirement benefits, reduction in accumulated other comprehensive loss due to settlement gain	$ 0.5

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Organization and Basis of Presentation Schedule of Property, Plant & Equipment (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Land	29.5	$ 26.2
Land improvements	18.9	19.0
Buildings and building improvements	306.6	314.3
Machinery and equipment	1,648.6	1,770.7
Construction in progress	95.1	91.4
Property, plant and equipment, gross	2,098.7	2,221.6
Accumulated depreciation and amortization	(1,040.2)	(1,160.5)
Property, plant and equipment, net	1,058.5	$ 1,061.1
Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	10-15
Building and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	15-40
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	3-12

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Stock Based Compensation Stock Based Compensation (Tables)

12 Months Ended

Dec. 31, 2014

Stock-based Compensation [Abstract]

Share-based Compensation, Performance Shares Award Outstanding Activity [Table Text Block]

The following table summarizes activity relating to our performance shares:

		Weighted Average
	Number of	Grant Date Fair
	Shares	Value per Share
EBITDA	(in millions, except per share data)
Outstanding at January 1, 2014	—	$	—
Granted	0.2	27.66
Vested	—	—
Canceled	—	—
Outstanding at December 31, 2014	0.2	$	27.66
TSR
Outstanding at January 1, 2014	—	$	—
Granted	0.2	21.11
Vested	—	—
Canceled	—	—
Outstanding at December 31, 2014	0.2	$	21.11

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

			Weighted-
	Number of		Average Exercise
	Shares		Price Per Share
	(in millions, except per share data)
Outstanding at January 1, 2012	3.9		$	26.95
Options granted	0.2		9.19
Options exercised	(0.1	)	2.81
Options canceled	(1.0	)	25.12
Outstanding at December 31, 2012	3.0		$	27.08
Options granted	—		—
Options exercised	(0.1	)	10.59
Options canceled	(0.9	)	24.28
Outstanding at December 31, 2013	2.0		$	29.22
Options granted	—		—
Options exercised	(0.1	)	13.87
Options canceled	(1.0	)	37.70
Outstanding at December 31, 2014	0.9		$	20.66
Exercisable at December 31, 2012	2.8		$	28.02
Exercisable at December 31, 2013	2.0		$	29.22
Exercisable at December 31, 2014	0.9		$	20.66

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]

		Weighted-				Weighted-
Range of	Stock Options	Average Exercise		Weighted-Average	Stock Options	Average Exercise
Exercise Prices	Outstanding	Price Per Share		Contractual Life	Exercisable	Price Per Share
	(in millions, except per share data)			(in years)	(in millions, except per share data)
$9.19 - $15.58	0.4	$	13.22	3.2	0.4	$	13.22
$19.54 - $26.65	0.5	26.05		1.2	0.5	26.05
	0.9	$	20.66	2.0	0.9	$	20.66

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]

			Weighted Average
	Number of		Grant Date Fair
	Shares/Units		Value per Share/Unit
	(in millions, except per share data)
Outstanding at January 1, 2012	1.6		$	10.74
Granted	1.0		10.31
Vested	(1.4	)	10.19
Canceled	(0.1	)	26.02
Outstanding at December 31, 2012	1.1		$	11.08
Granted	0.9		12.79
Vested	(0.7	)	11.06
Canceled	—		—
Outstanding at December 31, 2013	1.3		$	12.24
Granted	0.5		19.58
Vested	(0.1	)	13.95
Canceled	(0.1	)	12.76
Outstanding at December 31, 2014	1.6		$	14.54

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Employee Benefit Plans Employee Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2014

Employee Benefit Plans [Abstract]

Schedule of Assumptions Used [Table Text Block]

	Pension Benefits												OPEB
	2014				2013				2012				2014		2013		2012
	U.S.		U.K		U.S.		U.K		U.S.		U.K.
Discount rate	4.10	%	3.70	%	5.00	%	4.50	%	4.10	%	4.30	%	4.15	%	4.95	%	4.05	%
Expected return on plan assets	7.50	%	5.00	%	7.50	%	5.15	%	7.50	%	4.35	%	N/A		N/A		N/A
Rate of compensation increase	4.00	%	3.30	%	4.00	%	3.60	%	4.00	%	3.15	%	4.00	%	4.00	%	4.00	%

Change in Benefit Obligation and Plan Assets [Table Text Block]

	Pension Benefits						OPEB
	December 31,						December 31,
	2014			2013			2014			2013
	(in millions)						(in millions)
Change in benefit obligation
Benefit obligation at beginning of year	$	755.4		$	842.8		$	577.9		$	601.3
Service cost	3.5			3.4			0.3			0.4
Interest cost	36.1			33.8			15.3			13.2
Plan amendments	—			—			—			(8.1		)
Actuarial loss (gain)	119.3			(92.6		)	41.2			(0.7		)
Change in GM portion of OPEB obligation	—			—			31.8			(17.0		)
Participant contributions	0.4			0.4			—			—
Settlements	(131.1		)	—			—			—
Benefit payments	(36.5		)	(35.3		)	(11.8		)	(11.2		)
Currency fluctuations	(8.3		)	2.9			—			—
Net change	(16.6		)	(87.4		)	76.8			(23.4		)
Benefit obligation at end of year	$	738.8		$	755.4		$	654.7		$	577.9
Change in plan assets
Fair value of plan assets at beginning of year	$	713.4		$	695.4		$	—		$	—
Actual return on plan assets	77.2			49.2			—			—
Employer contributions	1.9			0.8			11.8			11.2
Participant contributions	0.4			0.4			—			—
Benefit payments	(36.5		)	(35.3		)	(11.8		)	(11.2		)
Settlements	(104.2		)	—			—			—
Currency fluctuations	(8.5		)	2.9			—			—
Net change	(69.7		)	18.0			—			—
Fair value of plan assets at end of year	$	643.7		$	713.4		$	—		$	—

Schedule of Amounts Recognized in Balance Sheet [Table Text Block]

	Pension Benefits						OPEB
	December 31,						December 31,
	2014			2013			2014			2013
	(in millions)						(in millions)
Noncurrent assets	$	6.9		$	9.3		$	—		$	—
Current liabilities	(3.0		)	(2.3		)	(29.6		)	(30.8		)
Noncurrent liabilities	(99.0		)	(49.0		)	(625.1		)	(547.1		)
Net liability	$	(95.1	)	$	(42.0	)	$	(654.7	)	$	(577.9	)

Schedule of Pre-tax Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]

	Pension Benefits						OPEB
	December 31,						December 31,
	2014			2013			2014			2013
	(in millions)						(in millions)
Net actuarial gain (loss)	$	(215.3	)	$	(194.3	)	$	(35.7	)	$	4.9
Net prior service credit	0.7			0.8			15.4			18.1
Total amounts recorded	$	(214.6	)	$	(193.5	)	$	(20.3	)	$	23.0

Schedule of Net Benefit Costs [Table Text Block]

	Pension Benefits									OPEB
	2014			2013			2012			2014			2013			2012
	(in millions)									(in millions)
Service cost	$	3.5		$	3.4		$	3.1		$	0.3		$	0.4		$	0.4
Interest cost	36.1			33.8			35.1			15.3			13.2			15.1
Expected asset return	(48.4		)	(45.8		)	(34.7		)	—			—			—
Amortized actuarial loss	5.4			8.9			7.8			0.5			0.9			0.6
Amortized prior service cost (credit)	(0.1		)	5.4			0.5			(2.7		)	(1.8		)	(2.0		)
Special and contractual
termination benefits	—			—			12.8			—			—			16.2
Curtailment gain	—			—			—			—			—			(21.8		)
Settlement charge (gain)	35.5			—			—			—			—			(5.2		)
Net periodic benefit cost	$	32.0		$	5.7		$	24.6		$	13.4		$	12.7		$	3.3

Schedule of Weighted Average Allocation of Pension Plan Assets [Table Text Block]

	U.S.					U.K.
					Target					Target
	2014		2013		Allocation	2014		2013		Allocation
Equity securities	33.1	%	42.5	%	30% - 65%	28.7	%	30.7	%	25% - 35%
Fixed income securities	47.3		48.5		35% - 55%	61.1		59.0		55% - 65%
Hedge funds	18.3		8.8		0% - 20%	10.1		10.2		5% - 15%
Cash	1.3		0.2		0% - 5%	0.1		0.1		0% - 5%
Total	100.0	%	100.0	%		100.0	%	100.0	%

Schedule of Fair Value Hierarchy by Asset Category for Postretirement Benefit Plan Assets [Table Text Block]

The fair values of our pension plan assets are as follows:

December 31, 2014
Asset Categories	Level 1		Level 2		Level 3		Total
	(in millions)
Cash & Cash Equivalents	$	6.7	$	—	$	—	$	6.7
Equity
U.S. Large Cap	87.3		—		—		87.3
U.S. Small/Mid Cap	25.2		—		—		25.2
World Equity	94.2		—		—		94.2
Fixed Income Securities
Government & Agencies	67.9		58.8		—		126.7
Corporate Bonds - Investment Grade	139.9		—		—		139.9
Corporate Bonds - Non-investment Grade	31.9		—		—		31.9
Emerging Market Debt	19.0		—		—		19.0
Other	7.2		—		—		7.2
Hedge Funds
Property Funds	—		—		48.3		48.3
Multi Strategy Hedge Fund	—		—		57.3		57.3
Total Plan Assets	$	479.3	$	58.8	$	105.6	$	643.7
December 31, 2013
Asset Categories	Level 1		Level 2		Level 3		Total
	(in millions)
Cash & Cash Equivalents	$	1.5	$	—	$	—	$	1.5
Equity
U.S. Large Cap	128.0		—		—		128.0
U.S. Small/Mid Cap	49.4		—		—		49.4
World Equity	109.3		—		—		109.3
Fixed Income Securities
Government & Agencies	70.5		63.0		—		133.5
Corporate Bonds - Investment Grade	167.1		—		—		167.1
Corporate Bonds - Non-investment Grade	25.8		—		—		25.8
Emerging Market Debt	17.4		—		—		17.4
Other	16.9		—		—		16.9
Hedge Funds
Property Funds	—		—		7.1		7.1
Multi Strategy Hedge Fund	—		—		57.4		57.4
Total Plan Assets	$	585.9	$	63.0	$	64.5	$	713.4

Schedule of Effect of Significant Unobservable Inputs, Changes in Plan Assets [Table Text Block]

	December 31,
	2014		2013
	(in millions)
Beginning balance	$	64.5	$	47.6
Actual return on plan assets:
Relating to assets still held at the reporting date	3.3		3.5
Purchases, sales and settlements, net	37.8		13.4
Ending balance	$	105.6	$	64.5

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Schedule II - Valuation and Qualifying Accounts Schedule II - Valuation and Qualifying Accounts (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Valuation and Qualifying Accounts Disclosure [Line Items]
Allowance for doubtful accounts	$ 4.6	$ 4.9
Allowance for deferred taxes	156.9	163.7
Inventory valuation allowance	27.9	27.3
Allowance for Doubtful Accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Allowance for doubtful accounts	4.6	4.9	6.5	5.5
Additions, charged to costs and expenses	1.3	2.3	2.0
Deductions	1.6	3.9	1.0
Valuation Allowance of Deferred Tax Assets [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Allowance for deferred taxes	156.9	163.7	166.1	426.9
Additions, charged to costs and expenses	13.8	14.0	80.9
Deductions	20.6	16.4	341.7
Inventory Valuation Reserve [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Inventory valuation allowance	27.9	27.3	21.0	26.7
Additions, charged to costs and expenses	10.6	19.4	7.9
Deductions	$ 10.0	$ 13.1	$ 13.6

XML

Fair Value Fair Value of Assets and Liabilities Measured on Recurring and Nonrecurring Basis (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Cash and Cash Equivalents [Member] | Reported Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents, at carrying value	$ 35.3	$ 6.1
Cash and Cash Equivalents [Member] | Portion at Fair Value, Fair Value Disclosure [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents, fair value disclosure	35.3	6.1
Other Current Assets [Member] | Reported Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Currency forward contracts, asset, fair value disclosure	0	0.7
Other Current Assets [Member] | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Currency forward contracts, asset, fair value disclosure	0	0.7
Accrued Liabilities [Member] | Reported Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Currency forward contracts, liability, fair value disclosure	8.3	0.4
Accrued Liabilities [Member] | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Currency forward contracts, liability, fair value disclosure	8.3	0.4
Other Noncurrent Liabilities [Member] | Reported Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Currency forward contracts, liability, fair value disclosure	0.1	0
Other Noncurrent Liabilities [Member] | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Currency forward contracts, liability, fair value disclosure	$ 0.1	$ 0

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Organization and Basis of Presentation Goodwill Rollforward (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Goodwill [Line Items]
Beginning balance	$ 156.4	$ 156.4
Foreign currency translation	(1.4)	0
Ending balance	$ 155.0	$ 156.4

XML

Income Taxes Income Taxes (Tables)

12 Months Ended

Dec. 31, 2014

Income Taxes [Abstract]

Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]

	2014		2013			2012
	(in millions)
U.S. income (loss)	$	12.0	$	(23.8	)	$	(6.0	)
Non - U.S. income	164.7		110.1			37.5
Total income before income taxes	$	176.7	$	86.3		$	31.5

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

	2014			2013			2012
	(in millions)
Current
Federal	$	0.6		$	(1.3	)	$	(3.3	)
Other state and local	0.1			0.1			1.1
Foreign	44.2			12.1			10.2
Total current	$	44.9		$	10.9		$	8.0
Deferred
Federal	$	(11.6	)	$	(9.3	)	$	(347.1	)
Foreign	0.4			(9.8		)	3.9
Total deferred	(11.2		)	(19.1		)	(343.2		)
Total income tax expense (benefit)	$	33.7		$	(8.2	)	$	(335.2	)

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

	2014		2013		2012
Federal statutory	35.0	%	35.0	%	35.0	%
Foreign income taxes	(25.1	)	(48.5	)	(85.0	)
Change in enacted tax rate	—		(9.9	)	—
State and local	0.1		0.2		3.5
Tax Credits	(11.4	)	—		—
Valuation allowance	4.5		12.4		(985.0	)
U.S. tax on unremitted foreign earnings	1.9		(0.2	)	(29.5	)
Uncertain tax positions	13.0		(0.5	)	(5.2	)
Other	1.1		2.0		2.0
Effective income tax rate	19.1	%	(9.5	)%	(1,064.2	)%

Current Deferred Tax Assets and Liabilities [Table Text Block]

	December 31,
	2014			2013
	(in millions)
Current deferred tax assets
Employee benefits	$	26.0		$	14.5
Inventory	7.5			8.0
Prepaid taxes and other	16.9			24.6
Valuation allowance	(10.2		)	(10.7		)
Total current deferred tax assets	$	40.2		$	36.4
Current deferred tax liabilities
Unrealized foreign exchange gain and other	(0.1		)	(0.1		)
Current deferred tax asset, net	$	40.1		$	36.3

Current Deferred Tax Assets and Liabilities, Net by Jurisdiction [Table Text Block]

	December 31,
	2014		2013
	(in millions)
U.S. federal and state deferred tax asset, net	$	27.0	$	17.1
Other foreign deferred tax asset, net	13.1		19.2
Current deferred tax asset, net	$	40.1	$	36.3

Noncurrent Deferred Tax Assets and Liabilities [Table Text Block]

	December 31,
	2014			2013
	(in millions)
Noncurrent deferred tax assets
Employee benefits	$	193.9		$	161.5
Net operating loss (NOL) carryforwards	104.7			176.9
Tax credit carryforwards	69.8			82.9
Capital allowance carryforwards	14.4			16.0
Fixed assets	6.6			10.3
Deferred revenue	12.6			15.7
Capitalized expenditures	111.2			113.6
Other	2.3			2.9
Valuation allowances	(146.7		)	(153.0		)
Noncurrent deferred tax assets	368.8			426.8
Noncurrent deferred tax liabilities
U.S. tax on unremitted foreign earnings	—			(85.0		)
Fixed assets and other	(9.1		)	(9.8		)
Noncurrent deferred tax asset, net	$	359.7		$	332.0

Noncurrent Deferred Tax Assets and Liabilities, Net by Jurisdiction [Table Text Block]

	December 31,
	2014			2013
	(in millions)
U.S. federal and state deferred tax asset, net	$	362.2		$	337.2
Other foreign deferred tax asset (liability), net	(2.5		)	(5.2		)
Noncurrent deferred tax asset, net	$	359.7		$	332.0

Schedule of Unrecognized Income Tax Benefits [Table Text Block]

	Unrecognized Income Tax			Interest and
	Benefits			Penalties
	(in millions)
Balance at January 1, 2012	$	25.8		$	7.4
Increase in prior year tax positions	—			2.8
Decrease in prior year tax positions	(1.1		)	—
Increase in current year tax positions	0.4			—
Settlement	(4.4		)	—
Balance at December 31, 2012	$	20.7		$	10.2
Increase in prior year tax positions	6.1			0.1
Decrease in prior year tax positions	(4.4		)	(6.2		)
Increase in current year tax positions	4.0			—
Settlement	(4.7		)	—
Balance at December 31, 2013	$	21.7		$	4.1
Increase in prior year tax positions	10.5			8.1
Decrease in prior year tax positions	(0.5		)	—
Increase in current year tax positions	15.6			—
Balance at December 31, 2014	$	47.3		$	12.2

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Earnings Per Share Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2014

Earnings (Loss) per Share (EPS) [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	2014			2013			2012
	(in millions, except per share data)
Numerator
Net income attributable to AAM	$	143.0		$	94.5		$	367.7
Less: Net income attributable to participating securities	(2.9		)	(1.9		)	(2.6		)
Net income attributable to common shareholders - Basic	$	140.1		$	92.6		$	365.1
Undistributed earnings reallocated to common shareholders under two step dilutive method	—			—			—
Net income attributable to common shareholders - Dilutive	$	140.1		$	92.6		$	365.1
Denominators
Basic common shares outstanding -
Weighted-average shares outstanding	77.3			76.7			75.3
Less: Participating securities	(1.6		)	(1.5		)	(0.5		)
Weighted-average common shares outstanding	75.7			75.2			74.8
Effect of dilutive securities -
Dilutive stock-based compensation	0.2			0.1			0.1
Diluted shares outstanding -
Adjusted weighted-average shares after assumed conversions	75.9			75.3			74.9
Basic EPS	$	1.85		$	1.23		$	4.88
Diluted EPS	$	1.85		$	1.23		$	4.87

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Consolidated Statements of Stockholders' Equity (USD $) In Millions, unless otherwise specified	3 Months Ended		12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Paid-in capital	$ 623.7	$ 612.8	$ 623.7	$ 612.8
Accumulated deficit	(31.4)	(174.4)	(31.4)	(174.4)
Treasury stock	(182.8)	(182.5)	(182.8)	(182.5)
Accumulated other comprehensive income (loss), net of tax	(296.9)	(216.2)	(296.9)	(216.2)	(264.6)
Noncontrolling interest in subsidiaries	0	0	0	0
Net income attributable to AAM	13.2	29.8	143.0	94.5	367.7
Net loss attributable to noncontrolling interests			0	0	1.0
Change in derivatives			(7.7)	(2.0)	7.8
Foreign currency translation adjustment			(30.3)	(26.2)	(9.4)
Foreign currency translation adjustments attributable to noncontrolling interests			0	0	0.3
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Net of Tax			(42.7)	76.6	(58.9)
2008 GM agreement, shares issued to GM through exercise of warrants
Change in additional paid in capital for purchase of noncontrolling interest					1.2
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests					(5.2)
Common Stock [Member]
Common stock, shares outstanding	75.8	75.6	75.8	75.6	74.8	73.8
Common stock, par value	0.8	0.8	0.8	0.8	0.8	0.8
Stock issued during period, exercise of stock options and vesting of restricted stock			0.2	0.8	1.5
Treasury stock, shares, acquired					(0.5)
Additional Paid-in Capital [Member]
Paid-in capital	623.7	612.8	623.7	612.8	600.9	597.2
Change in additional paid in capital for exercise of stock options and vesting of restricted stock			1.2	1.1	0.1
Adjustments to additional paid in capital, stock based compensation			9.7	10.8	2.4
Retained Earnings [Member]
Accumulated deficit	(31.4)	(174.4)	(31.4)	(174.4)	(268.9)	(636.6)
Net income attributable to AAM			143.0	94.5	367.7
Treasury Stock [Member]
Treasury stock	(182.8)	(182.5)	(182.8)	(182.5)	(182.1)	(176.2)
Treasury stock, value, acquired, cost method			(0.3)	(0.4)	(5.9)
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated other comprehensive income (loss), net of tax	(296.9)	(216.2)	(296.9)	(216.2)	(264.6)	(203.8)
Change in derivatives			(7.7)	(2.0)	7.8
Foreign currency translation adjustment			(30.3)	(26.2)	(9.7)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Net of Tax			42.7	(76.6)	58.9
Noncontrolling Interest [Member]
Noncontrolling interest in subsidiaries	0	0	0	0	0	5.9
Net loss attributable to noncontrolling interests					1.0
Foreign currency translation adjustments attributable to noncontrolling interests					$ 0.3

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Commitments and Contingencies Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2014

Commitments and Contingencies [Abstract]

Schedule of Product Warranty Liability [Table Text Block]

	December 31,
	2014			2013
	(in millions)
Beginning balance	$	14.3		$	29.1
Accruals	9.3			12.8
Settlements	(2.2		)	(12.3		)
Adjustments to prior period accruals	(8.7		)	(15.0		)
Foreign currency translation	(0.3		)	(0.3		)
Ending balance	$	12.4		$	14.3

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Income Taxes Noncurrent Deferred Tax Assets and Liabilities Recognized in the Balance Sheet (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Deferred tax assets (liabilities), net, noncurrent	$ 359.7	$ 332.0
Domestic [Member]
Deferred tax assets (liabilities), net, noncurrent	362.2	337.2
Foreign [Member]
Deferred tax assets (liabilities), net, noncurrent	$ (2.5)	$ (5.2)

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Organization and Basis of Presentation Accounts Receivable (Narrative) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Organization and Summary of Significant Accounting Policies [Abstract]
Allowance for doubtful accounts	$ 4.6	$ 4.9

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Derivatives Foreign Currency Derivatives (Narrative) (Details) (Forward Contracts [Member], USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Forward Contracts [Member]
Derivative [Line Items]
Derivative, notional amount	$ 99.3	$ 67.2

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Stock Based Compensation Stock Based Compensation (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, number of shares authorized	18.5
Share-based compensation arrangement by share-based payment award, number of shares available for grant	2.2
Share-based compensation arrangement by share-based payment award, award vesting period	10 years
Options outstanding	2.0	3.0	3.9
Options granted	0	0	0.2
Options exercised	(0.1)	(0.1)	(0.1)
Options canceled	(1.0)	(0.9)	(1.0)
Options outstanding	0.9	2.0	3.0
Weighted-average price outstanding	$ 20.66	$ 29.22	$ 27.08	$ 26.95
Weighted-average price granted	$ 0.00	$ 0.00	$ 9
Weighted-average price exercised	$ 13.87	$ 10.59	$ 2.81
Weighted-average price canceled	$ 37.70	$ 24.28	$ 25.12
Options exercisable	0.9	2.0	2.8
Weighted-average price of options exercisable	$ 20.66	$ 29.22	$ 28.02
Share-based compensation arrangement by share-based payment award, options, outstanding, intrinsic value	$ 3.4
Share-based compensation arrangement by share-based payment award, options, exercises in period, total intrinsic value	$ 0.5	$ 0.8	$ 0.5
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	1 year
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	2 years

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Consolidated Statements of Income (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Net sales	$ 3,696.0	$ 3,207.3	$ 2,930.9
Cost of goods sold	3,173.2	2,728.6	2,531.2
Gross Profit	522.8	478.7	399.7
Selling, general and administrative expenses	255.2	238.4	243.3
Operating income	267.6	240.3	156.4
Interest expense	(99.9)	(115.9)	(101.6)
Investment income	2.1	0.6	0.6
Other income (expense)
Debt refinancing and redemption costs	0	(36.8)	(19.8)
Other, net	6.9	(1.9)	(4.1)
Income before income taxes	176.7	86.3	31.5
Income tax expense (benefit)	33.7	(8.2)	(335.2)
Net income	143.0	94.5	366.7
Net loss attributable to noncontrolling interests	0	0	1.0
Net income attributable to AAM	$ 143.0	$ 94.5	$ 367.7
Basic earnings per share	$ 1.85	$ 1.23	$ 4.88
Diluted earnings per share	$ 1.85	$ 1.23	$ 4.87

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Organization and Basis of Presentation Intangible Assets (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Acquired Finite-Lived Intangible Assets [Line Items]
Capitalized computer software, gross	$ 19.2
Capitalized Computer Software, Additions	11.4	7.8
Capitalized computer software, amortization	0.4	0.1
Finite-Lived Intangible Assets, Gross	6.2	7.4	7.4
Finite-Lived Intangible Assets, Translation Adjustments	$ (1.2)	$ 0

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Supplemental Guarantor Condensed Consolidating Financial Statements 2013 and 2012 Income Statements (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Net sales
External									$ 3,696.0	$ 3,207.3	$ 2,930.9
Intercompany									0	0	0
Total net sales	939.5	950.8	946.9	858.8	831.3	820.8	799.6	755.6	3,696.0	3,207.3	2,930.9
Cost of goods sold									3,173.2	2,728.6	2,531.2
Gross Profit	111.2	140.7	149.0	121.9	126.9	125.3	122.2	104.3	522.8	478.7	399.7
Selling, general and administrative expenses									255.2	238.4	243.3
Operating income (loss)									267.6	240.3	156.4
Non-operating income (expense), net									(90.9)	(154.0)	(124.9)
Income (loss) before income taxes									176.7	86.3	31.5
Income tax expense (benefit)									33.7	(8.2)	(335.2)
Earnings (loss) from equity in subsidiaries									0	0	0
Net income (loss) before royalties and dividends									143.0	94.5	366.7
Royalties and dividends									0	0	0
Net income after royalties and dividends									143.0	94.5	366.7
Net Income (Loss) Attributable to Noncontrolling Interest									0	0	(1.0)
Net Income (Loss) Attributable to Parent	13.2	44.0	52.2	33.6	29.8	31.6	25.8	7.3	143.0	94.5	367.7
Other comprehensive income (loss), net of tax									(80.7)	48.4	(60.5)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Noncontrolling Interest									0	0	0.3
Comprehensive income (loss) attributable to AAM									62.3	142.9	306.9
Holdings [Member]
Net sales
External									0	0	0
Intercompany									0	0	0
Total net sales									0	0	0
Cost of goods sold									0	0	0
Gross Profit									0	0	0
Selling, general and administrative expenses									0	0	0
Operating income (loss)									0	0	0
Non-operating income (expense), net									0	0	0
Income (loss) before income taxes									0	0	0
Income tax expense (benefit)									0	0	0
Earnings (loss) from equity in subsidiaries									143.0	94.5	367.7
Net income (loss) before royalties and dividends									143.0	94.5	367.7
Royalties and dividends									0	0	0
Net income after royalties and dividends									143.0	94.5	367.7
Net Income (Loss) Attributable to Noncontrolling Interest											0
Net Income (Loss) Attributable to Parent											367.7
Other comprehensive income (loss), net of tax									(80.7)	48.4	(60.5)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Noncontrolling Interest											0.3
Comprehensive income (loss) attributable to AAM									62.3	142.9	306.9
AAM Inc. [Member]
Net sales
External									1,099.5	773.6	704.8
Intercompany									13.1	15.3	18.6
Total net sales									1,112.6	788.9	723.4
Cost of goods sold									1,112.4	769.4	709.8
Gross Profit									0.2	19.5	13.6
Selling, general and administrative expenses									194.0	182.4	186.5
Operating income (loss)									(193.8)	(162.9)	(172.9)
Non-operating income (expense), net									(103.0)	(155.1)	(135.2)
Income (loss) before income taxes									(296.8)	(318.0)	(308.1)
Income tax expense (benefit)									(11.8)	(24.9)	(343.9)
Earnings (loss) from equity in subsidiaries									204.0	167.0	79.0
Net income (loss) before royalties and dividends									(81.0)	(126.1)	114.8
Royalties and dividends									224.0	220.6	252.9
Net income after royalties and dividends									143.0	94.5	367.7
Net Income (Loss) Attributable to Noncontrolling Interest											0
Net Income (Loss) Attributable to Parent											367.7
Other comprehensive income (loss), net of tax									(80.7)	48.4	(60.5)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Noncontrolling Interest											0.3
Comprehensive income (loss) attributable to AAM									62.3	142.9	306.9
Guarantor Subsidiaries of Certain Notes [Member]
Net sales
External									225.1	226.0	214.4
Intercompany									246.9	226.1	226.8
Total net sales									472.0	452.1	441.2
Cost of goods sold									396.1	389.0	389.8
Gross Profit									75.9	63.1	51.4
Selling, general and administrative expenses									0.2	0.1	0
Operating income (loss)									75.7	63.0	51.4
Non-operating income (expense), net									9.0	10.7	(2.2)
Income (loss) before income taxes									84.7	73.7	49.2
Income tax expense (benefit)									0.9	0.9	(5.5)
Earnings (loss) from equity in subsidiaries									(23.3)	(21.7)	(49.2)
Net income (loss) before royalties and dividends									60.5	51.1	5.5
Royalties and dividends									0	0	0
Net income after royalties and dividends									60.5	51.1	5.5
Net Income (Loss) Attributable to Noncontrolling Interest											0
Net Income (Loss) Attributable to Parent											5.5
Other comprehensive income (loss), net of tax									(23.5)	(7.2)	(10.1)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Noncontrolling Interest											0
Comprehensive income (loss) attributable to AAM									37.0	43.9	(4.6)
Non-Guarantor Subsidiaries [Member]
Net sales
External									2,371.4	2,207.7	2,011.7
Intercompany									21.6	14.0	25.2
Total net sales									2,393.0	2,221.7	2,036.9
Cost of goods sold									1,946.3	1,825.6	1,702.2
Gross Profit									446.7	396.1	334.7
Selling, general and administrative expenses									61.0	55.9	56.8
Operating income (loss)									385.7	340.2	277.9
Non-operating income (expense), net									3.1	(9.6)	12.5
Income (loss) before income taxes									388.8	330.6	290.4
Income tax expense (benefit)									44.6	15.8	14.2
Earnings (loss) from equity in subsidiaries									0	0	0
Net income (loss) before royalties and dividends									344.2	314.8	276.2
Royalties and dividends									(224.0)	(220.6)	(252.9)
Net income after royalties and dividends									120.2	94.2	23.3
Net Income (Loss) Attributable to Noncontrolling Interest											(1.0)
Net Income (Loss) Attributable to Parent											24.3
Other comprehensive income (loss), net of tax									(34.8)	(10.8)	(3.6)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Noncontrolling Interest											0.3
Comprehensive income (loss) attributable to AAM									85.4	83.4	20.4
Consolidation, Eliminations [Member]
Net sales
External									0	0	0
Intercompany									(281.6)	(255.4)	(270.6)
Total net sales									(281.6)	(255.4)	(270.6)
Cost of goods sold									(281.6)	(255.4)	(270.6)
Gross Profit									0	0	0
Selling, general and administrative expenses									0	0	0
Operating income (loss)									0	0	0
Non-operating income (expense), net									0	0	0
Income (loss) before income taxes									0	0	0
Income tax expense (benefit)									0	0	0
Earnings (loss) from equity in subsidiaries									(323.7)	(239.8)	(397.5)
Net income (loss) before royalties and dividends									(323.7)	(239.8)	(397.5)
Royalties and dividends									0	0	0
Net income after royalties and dividends									(323.7)	(239.8)	(397.5)
Net Income (Loss) Attributable to Noncontrolling Interest											0
Net Income (Loss) Attributable to Parent											(397.5)
Other comprehensive income (loss), net of tax									139.0	(30.4)	74.2
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Noncontrolling Interest											(0.6)
Comprehensive income (loss) attributable to AAM									$ (184.7)	$ (270.2)	$ (322.7)

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Consolidated Balance Sheets Parenthetical (Parentheticals) (USD $) In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Series A Preferred Stock [Member]
Preferred stock, par or stated value per share	$ 0.01	$ 0.01
Preferred stock, shares authorized	0.1	0.1
Preferred stock, shares outstanding	0	0
Preferred Stock [Member]
Preferred stock, par or stated value per share	$ 0.01	$ 0.01
Preferred stock, shares authorized	10.0	10.0
Preferred stock, shares outstanding	0	0
Common Stock [Member]
Common stock, par or stated value per share	$ 0.01	$ 0.01
Common stock, shares authorized	150.0	150.0
Common stock, shares issued	81.9	81.6
Treasury stock, shares	6.1	6.0
Series Common Stock [Member]
Common stock, par or stated value per share	$ 0.01	$ 0.01
Common stock, shares authorized	40.0	40.0
Common stock, shares, outstanding	0	0

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Unaudited Quarterly Financial Data Unaudited Quarterly Financial Data (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Net sales	$ 939.5	$ 950.8	$ 946.9	$ 858.8	$ 831.3	$ 820.8	$ 799.6	$ 755.6	$ 3,696.0	$ 3,207.3	$ 2,930.9
Gross Profit	111.2	140.7	149.0	121.9	126.9	125.3	122.2	104.3	522.8	478.7	399.7
Net income	13.2	44.0	52.2	33.6	29.8	31.6	25.8	7.3	143.0	94.5	366.7
Net income attributable to AAM	$ 13.2	$ 44.0	$ 52.2	$ 33.6	$ 29.8	$ 31.6	$ 25.8	$ 7.3	$ 143.0	$ 94.5	$ 367.7
Basic earnings per share	$ 0.17	$ 0.57	$ 0.67	$ 0.44	$ 0.39	$ 0.41	$ 0.34	$ 0.10	$ 1.85	$ 1.23	$ 4.88
Diluted earnings per share	$ 0.17	$ 0.57	$ 0.67	$ 0.44	$ 0.39	$ 0.41	$ 0.34	$ 0.10	$ 1.85	$ 1.23	$ 4.87

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Employee Benefit Plans Defined Benefit Plan, Assumptions Used (Details)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Other Postretirement Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.15%	4.95%	4.05%
Rate of compensation increase	4.00%	4.00%	4.00%
United States Pension Plan of US Entity [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.10%	5.00%	4.10%
Expected return on plan assets	7.50%	7.50%	7.50%
Rate of compensation increase	4.00%	4.00%	4.00%
Foreign Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	3.70%	4.50%	4.30%
Expected return on plan assets	5.00%	5.15%	4.35%
Rate of compensation increase	3.30%	3.60%	3.15%

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Supplemental Guarantor Condensed Consolidating Financial Statements 2012 Cash Flow Statement (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Net cash provided by (used in) operating activities	$ 318.4	$ 223.0	$ (175.5)
Investing activities
Purchases of property, plant and equipment	(206.5)	(251.9)	(207.6)
Proceeds from sale of property, plant and equipment	9.1	9.1	10.1
Proceeds from sale-leaseback of equipment	0	24.1	12.1
Intercompany Activity - Investing	0	0	0
Net cash used in investing activities	(195.3)	(218.7)	(185.4)
Financing activities
Net debt activity	(22.0)	104.8	273.9
Intercompany Activity - Financing	0	0	0
Debt issuance costs	(0.3)	(16.7)	(10.6)
Employee stock option exercises, including tax benefit	1.2	1.1	0.1
Purchase of treasury stock	(0.3)	(0.4)	(5.9)
Purchase of noncontrolling interest			(4.0)
Net cash provided by (used in) financing activities	(21.4)	88.8	253.5
Effect of exchange rate changes on cash	(6.5)	(1.5)	0.6
Net increase (decrease) in cash and cash equivalents	95.2	91.6	(106.8)
Cash and cash equivalents at beginning of year	154.0	62.4	169.2
Cash and cash equivalents at end of year	249.2	154.0	62.4
Holdings [Member]
Net cash provided by (used in) operating activities	0	0	0
Investing activities
Purchases of property, plant and equipment	0	0	0
Proceeds from sale of property, plant and equipment	0	0	0
Proceeds from sale-leaseback of equipment	0	0	0
Intercompany Activity - Investing	0	0	0
Net cash used in investing activities	0	0	0
Financing activities
Net debt activity	0	0	0
Intercompany Activity - Financing	0.3	0.4	5.9
Debt issuance costs	0	0	0
Employee stock option exercises, including tax benefit	0	0	0
Purchase of treasury stock	(0.3)	(0.4)	(5.9)
Purchase of noncontrolling interest			0
Net cash provided by (used in) financing activities	0	0	0
Effect of exchange rate changes on cash	0	0	0
Net increase (decrease) in cash and cash equivalents	0	0	0
Cash and cash equivalents at beginning of year	0	0	0
Cash and cash equivalents at end of year	0	0	0
AAM Inc. [Member]
Net cash provided by (used in) operating activities	83.4	(35.9)	(274.3)
Investing activities
Purchases of property, plant and equipment	(51.3)	(61.2)	(59.4)
Proceeds from sale of property, plant and equipment	7.9	5.1	7.0
Proceeds from sale-leaseback of equipment	0	24.1	12.1
Intercompany Activity - Investing	0	0
Net cash used in investing activities	(43.4)	(32.0)	(40.3)
Financing activities
Net debt activity	(7.8)	110.1	257.9
Intercompany Activity - Financing	(0.3)	(0.4)	(5.9)
Debt issuance costs	(0.3)	(16.6)	(10.6)
Employee stock option exercises, including tax benefit	1.2	1.1	0.1
Purchase of treasury stock	0	0	0
Purchase of noncontrolling interest			0
Net cash provided by (used in) financing activities	(7.2)	94.2	241.5
Effect of exchange rate changes on cash	0	0	0
Net increase (decrease) in cash and cash equivalents	32.8	26.3	(73.1)
Cash and cash equivalents at beginning of year	36.9	10.6	83.7
Cash and cash equivalents at end of year	69.7	36.9	10.6
Guarantor Subsidiaries of Certain Notes [Member]
Net cash provided by (used in) operating activities	41.9	64.9	46.6
Investing activities
Purchases of property, plant and equipment	(18.6)	(12.5)	(9.0)
Proceeds from sale of property, plant and equipment	0.4	0.5	0
Proceeds from sale-leaseback of equipment	0	0	0
Intercompany Activity - Investing	(23.3)	(52.6)	(37.4)
Net cash used in investing activities	(41.5)	(64.6)	(46.4)
Financing activities
Net debt activity	(0.4)	(0.3)	(0.2)
Intercompany Activity - Financing	0	0	0
Debt issuance costs	0	0	0
Employee stock option exercises, including tax benefit	0	0	0
Purchase of treasury stock	0	0	0
Purchase of noncontrolling interest			0
Net cash provided by (used in) financing activities	(0.4)	(0.3)	(0.2)
Effect of exchange rate changes on cash	0	0	0
Net increase (decrease) in cash and cash equivalents	0	0	0
Cash and cash equivalents at beginning of year	0	0	0
Cash and cash equivalents at end of year	0	0	0
Non-Guarantor Subsidiaries [Member]
Net cash provided by (used in) operating activities	193.1	194.0	52.2
Investing activities
Purchases of property, plant and equipment	(136.6)	(178.2)	(139.2)
Proceeds from sale of property, plant and equipment	0.8	3.5	3.1
Proceeds from sale-leaseback of equipment	0	0	0
Intercompany Activity - Investing	0	0
Net cash used in investing activities	(133.7)	(174.7)	(136.1)
Financing activities
Net debt activity	(13.8)	(5.0)	16.2
Intercompany Activity - Financing	23.3	52.6	37.4
Debt issuance costs	0	(0.1)	0
Employee stock option exercises, including tax benefit	0	0	0
Purchase of treasury stock	0	0	0
Purchase of noncontrolling interest			(4.0)
Net cash provided by (used in) financing activities	9.5	47.5	49.6
Effect of exchange rate changes on cash	(6.5)	(1.5)	0.6
Net increase (decrease) in cash and cash equivalents	62.4	65.3	(33.7)
Cash and cash equivalents at beginning of year	117.1	51.8	85.5
Cash and cash equivalents at end of year	179.5	117.1	51.8
Consolidation, Eliminations [Member]
Net cash provided by (used in) operating activities	0	0	0
Investing activities
Purchases of property, plant and equipment	0	0	0
Proceeds from sale of property, plant and equipment	0	0	0
Proceeds from sale-leaseback of equipment	0	0	0
Intercompany Activity - Investing	23.3	52.6	37.4
Net cash used in investing activities	23.3	52.6	37.4
Financing activities
Net debt activity	0	0	0
Intercompany Activity - Financing	(23.3)	(52.6)	(37.4)
Debt issuance costs	0	0	0
Employee stock option exercises, including tax benefit	0	0	0
Purchase of treasury stock	0	0	0
Purchase of noncontrolling interest			0
Net cash provided by (used in) financing activities	(23.3)	(52.6)	(37.4)
Effect of exchange rate changes on cash	0	0	0
Net increase (decrease) in cash and cash equivalents	0	0	0
Cash and cash equivalents at beginning of year	0	0	0
Cash and cash equivalents at end of year	$ 0	$ 0	$ 0

XML

Unaudited Quarterly Financial Data Unaudited Quarterly Financial Data (Tables)

12 Months Ended

Dec. 31, 2014

Unaudited Quarterly Financial Data [Abstract]

Schedule of Quarterly Financial Information [Table Text Block]

	Three Months Ended,
	March 31		June 30		September 30		December 31
	(in millions, except per share data)
2014
Net sales	$	858.8	$	946.9	$	950.8	$	939.5
Gross profit	121.9		149.0		140.7		111.2
Net income	33.6		52.2		44.0		13.2
Net income attributable to AAM	33.6		52.2		44.0		13.2
Basic EPS (1)	$	0.44	$	0.67	$	0.57	$	0.17
Diluted EPS (1)	$	0.44	$	0.67	$	0.57	$	0.17
2013
Net sales	$	755.6	$	799.6	$	820.8	$	831.3
Gross profit	104.3		122.2		125.3		126.9
Net income	7.3		25.8		31.6		29.8
Net income attributable to AAM	7.3		25.8		31.6		29.8
Basic EPS (1)	$	0.10	$	0.34	$	0.41	$	0.39
Diluted EPS (1)	$	0.10	$	0.34	$	0.41	$	0.39

(1) Full year basic and diluted EPS will not necessarily agree to the sum of the four quarters because each quarter is a separate calculation.

XML

Employee Benefit Plans OPEB Plan Assets by Category and Fair Value Hierarchy (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 643.7	$ 713.4
Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	479.3	585.9
Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	58.8	63.0
Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	105.6	64.5
Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	6.7	1.5
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	6.7	1.5
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
U.S. Large Cap [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	87.3	128.0
U.S. Large Cap [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	87.3	128.0
U.S. Large Cap [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
U.S. Large Cap [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
U.S. Small/Mid Cap [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	25.2	49.4
U.S. Small/Mid Cap [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	25.2	49.4
U.S. Small/Mid Cap [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
U.S. Small/Mid Cap [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	94.2	109.3
Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	94.2	109.3
Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Government Agencies [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	126.7	133.5
Government Agencies [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	67.9	70.5
Government Agencies [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	58.8	63.0
Government Agencies [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Investment Grade Corporate Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	139.9	167.1
Investment Grade Corporate Bonds [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	139.9	167.1
Investment Grade Corporate Bonds [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Investment Grade Corporate Bonds [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
NonInvestment Grade Corporate Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	31.9	25.8
NonInvestment Grade Corporate Bonds [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	31.9	25.8
NonInvestment Grade Corporate Bonds [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
NonInvestment Grade Corporate Bonds [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Emerging Market Debt [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	19.0	17.4
Emerging Market Debt [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	19.0	17.4
Emerging Market Debt [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Emerging Market Debt [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	7.2	16.9
Fixed Income Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	7.2	16.9
Fixed Income Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fixed Income Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Hedge Funds, Multi-strategy [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	57.3	57.4
Hedge Funds, Multi-strategy [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Hedge Funds, Multi-strategy [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Hedge Funds, Multi-strategy [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	57.3	57.4
Commercial Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	48.3
Commercial Real Estate [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 48.3

XML

Schedule II - Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2014

Exhibits and Financial Statements Schedules [Abstract]

Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]

Schedule II - VALUATION AND QUALIFYING ACCOUNTS

			Additions -
	Balance at		Charged to		Deductions -			Balance
	Beginning of		Costs and		See Notes			At End of
	Period		Expenses		Below			Period
	(in millions)
Year Ended December 31, 2012:
Allowance for doubtful accounts	$	5.5	$	2.0	$	1.0	(1)	$	6.5
Allowance for deferred taxes	426.9		80.9		341.7		(3)	166.1
Inventory valuation allowance	26.7		7.9		13.6		(2)	21.0
Year Ended December 31, 2013:
Allowance for doubtful accounts	6.5		2.3		3.9		(1)	4.9
Allowance for deferred taxes	166.1		14.0		16.4			163.7
Inventory valuation allowance	21.0		19.4		13.1		(2)	27.3
Year Ended December 31, 2014:
Allowance for doubtful accounts	4.9		1.3		1.6		(1)	4.6
Allowance for deferred taxes	163.7		13.8		20.6		(4)	156.9
Inventory valuation allowance	27.3		10.6		10.0		(2)	27.9

(1) Uncollectible accounts charged off net of recoveries.

(2) Primarily relates to inventory adjustments for physical quantity discrepancies and write-offs of excess and obsolete inventories.

(3) Primarily relates to the reversal of the valuation allowance against our net U.S. federal deferred tax assets.

(4) Primarily relates to the reversal of a valuation allowance against an expiring net operating loss in China.

XML

Supplemental Guarantor Condensed Consolidating Financial Statements Supplemental Guarantor Condensed Consolidating Financial Statements (Tables)

12 Months Ended

Dec. 31, 2014

Supplemental Guarantor Condensed Consolidating Financial Statements -9.25% Notes [Abstract]

Supplemental Guarantor Consolidating Income Statement [Table Text Block]

Condensed Consolidating Statements of Income
2014	Holdings			AAM Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Elims			Consolidated
	(in millions)
Net sales
External	$	—		$	1,099.5		$	225.1		$	2,371.4		$	—		$	3,696.0
Intercompany	—			13.1			246.9			21.6			(281.6		)	—
Total net sales	—			1,112.6			472.0			2,393.0			(281.6		)	3,696.0
Cost of goods sold	—			1,112.4			396.1			1,946.3			(281.6		)	3,173.2
Gross profit	—			0.2			75.9			446.7			—			522.8
Selling, general and administrative expenses	—			194.0			0.2			61.0			—			255.2
Operating income (loss)	—			(193.8		)	75.7			385.7			—			267.6
Non-operating income (expense), net	—			(103.0		)	9.0			3.1			—			(90.9		)
Income (loss) before income taxes	—			(296.8		)	84.7			388.8			—			176.7
Income tax expense (benefit)	—			(11.8		)	0.9			44.6			—			33.7
Earnings (loss) from equity in subsidiaries	143.0			204.0			(23.3		)	—			(323.7		)	—
Net income (loss) before royalties and dividends	143.0			(81.0		)	60.5			344.2			(323.7		)	143.0
Royalties and dividends	—			224.0			—			(224.0		)	—			—
Net income after royalties and dividends	143.0			143.0			60.5			120.2			(323.7		)	143.0
Other comprehensive loss, net of tax	(80.7		)	(80.7		)	(23.5		)	(34.8		)	139.0			(80.7		)
Comprehensive income	$	62.3		$	62.3		$	37.0		$	85.4		$	(184.7	)	$	62.3

2013	Holdings			AAM Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Elims			Consolidated
Net sales
External	$	—		$	773.6		$	226.0		$	2,207.7		$	—		$	3,207.3
Intercompany	—			15.3			226.1			14.0			(255.4		)	—
Total net sales	—			788.9			452.1			2,221.7			(255.4		)	3,207.3
Cost of goods sold	—			769.4			389.0			1,825.6			(255.4		)	2,728.6
Gross profit	—			19.5			63.1			396.1			—			478.7
Selling, general and administrative expenses	—			182.4			0.1			55.9			—			238.4
Operating income (loss)	—			(162.9		)	63.0			340.2			—			240.3
Non-operating income (expense), net	—			(155.1		)	10.7			(9.6		)	—			(154.0		)
Income (loss) before income taxes	—			(318.0		)	73.7			330.6			—			86.3
Income tax expense (benefit)	—			(24.9		)	0.9			15.8			—			(8.2		)
Earnings (loss) from equity in subsidiaries	94.5			167.0			(21.7		)	—			(239.8		)	—
Net income (loss) before royalties and dividends	94.5			(126.1		)	51.1			314.8			(239.8		)	94.5
Royalties and dividends	—			220.6			—			(220.6		)	—			—
Net income after royalties and dividends	94.5			94.5			51.1			94.2			(239.8		)	94.5
Other comprehensive income (loss), net of tax	48.4			48.4			(7.2		)	(10.8		)	(30.4		)	48.4
Comprehensive income	$	142.9		$	142.9		$	43.9		$	83.4		$	(270.2	)	$	142.9
2012	Holdings			AAM Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Elims			Consolidated
Net sales
External	$	—		$	704.8		$	214.4		$	2,011.7		$	—		$	2,930.9
Intercompany	—			18.6			226.8			25.2			(270.6		)	—
Total net sales	—			723.4			441.2			2,036.9			(270.6		)	2,930.9
Cost of goods sold	—			709.8			389.8			1,702.2			(270.6		)	2,531.2
Gross profit	—			13.6			51.4			334.7			—			399.7
Selling, general and administrative expenses	—			186.5			—			56.8			—			243.3
Operating income (loss)	—			(172.9		)	51.4			277.9			—			156.4
Non-operating income (expense), net	—			(135.2		)	(2.2		)	12.5			—			(124.9		)
Income (loss) before income taxes	—			(308.1		)	49.2			290.4			—			31.5
Income tax expense (benefit)	—			(343.9		)	(5.5		)	14.2			—			(335.2		)
Earnings (loss) from equity in subsidiaries	367.7			79.0			(49.2		)	—			(397.5		)	—
Net income before royalties and dividends	367.7			114.8			5.5			276.2			(397.5		)	366.7
Royalties and dividends	—			252.9			—			(252.9		)	—			—
Net income after royalties and dividends	367.7			367.7			5.5			23.3			(397.5		)	366.7
Net loss attributable to noncontrolling interests	—			—			—			1.0			—			1.0
Net income attributable to AAM	$	367.7		$	367.7		$	5.5		$	24.3		$	(397.5	)	$	367.7
Other comprehensive loss, net of tax	(60.5		)	(60.5		)	(10.1		)	(3.6		)	74.2			(60.5		)
Foreign currency translation adjustments attributable to noncontrolling interests	0.3			0.3			—			0.3			(0.6		)	0.3
Comprehensive income (loss) attributable to AAM	$	306.9		$	306.9		$	(4.6	)	$	20.4		$	(322.7	)	$	306.9

Supplemental Guarantor Consolidating Balance Sheet [Table Text Block]

Condensed Consolidating Balance Sheets
2014	Holdings		AAM Inc.		Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Elims			Consolidated
Assets	(in millions)
Current assets
Cash and cash equivalents	$	—	$	69.7	$	—	$	179.5	$	—		$	249.2
Accounts receivable, net	—		137.5		23.9		371.3		—			532.7
Intercompany receivables	—		231.0		174.1		10.0		(415.1		)	—
Inventories, net	—		64.9		32.3		151.6		—			248.8
Other current assets	—		53.6		2.6		52.6		—			108.8
Total current assets	—		556.7		232.9		765.0		(415.1		)	1,139.5
Property, plant and equipment, net	—		230.0		87.9		743.2		—			1,061.1
Goodwill	—		—		147.9		7.1		—			155.0
Intercompany notes and accounts receivable	—		509.4		219.1		—		(728.5		)	—
Other assets and deferred charges	—		736.6		45.7		121.3		—			903.6
Investment in subsidiaries	433.8		1,134.6		—		—		(1,568.4		)	—
Total assets	$	433.8	$	3,167.3	$	733.5	$	1,636.6	$	(2,712.0	)	$	3,259.2
Liabilities and stockholders' equity
Current liabilities
Current portion of long-term debt	$	—	$	9.4	$	—	$	3.6	$	—		$	13.0
Accounts payable	—		127.3		38.9		278.1		—			444.3
Intercompany payables	—		177.0		105.3		132.8		(415.1		)	—
Other current liabilities	—		121.0		4.4		104.5		—			229.9
Total current liabilities	—		434.7		148.6		519.0		(415.1		)	687.2
Intercompany notes and accounts payable	320.4		6.9		—		401.2		(728.5		)	—
Long-term debt	—		1,483.1		4.9		35.4		—			1,523.4
Investment in subsidiaries obligation	—		—		53.8		—		(53.8		)	—
Other long-term liabilities	—		808.8		0.6		125.8		—			935.2
Total liabilities	320.4		2,733.5		207.9		1,081.4		(1,197.4		)	3,145.8
Total stockholders' equity	113.4		433.8		525.6		555.2		(1,514.6		)	113.4
Total liabilities and stockholders' equity	$	433.8	$	3,167.3	$	733.5	$	1,636.6	$	(2,712.0	)	$	3,259.2
2013	Holdings		AAM Inc.		Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Elims			Consolidated
Assets
Current assets
Cash and cash equivalents	$	—	$	36.9	$	—	$	117.1	$	—		$	154.0
Accounts receivable, net	—		102.7		25.6		330.2		—			458.5
Intercompany receivables	—		180.5		116.6		9.2		(306.3		)	—
Inventories, net	—		62.4		34.2		165.2		—			261.8
Other current assets	—		43.8		3.2		75.0		—			122.0
Total current assets	—		426.3		179.6		696.7		(306.3		)	996.3
Property, plant and equipment, net	—		239.8		83.0		735.7		—			1,058.5
Goodwill	—		—		147.8		8.6		—			156.4
Intercompany notes and accounts receivable	—		327.0		201.5		—		(528.5		)	—
Other assets and deferred charges	—		671.7		44.8		99.8		—			816.3
Investment in subsidiaries	363.7		1,240.1		—		—		(1,603.8		)	—
Total assets	$	363.7	$	2,904.9	$	656.7	$	1,540.8	$	(2,438.6	)	$	3,027.5
Liabilities and stockholders' equity
Current liabilities
Accounts payable	$	—	$	106.2	$	44.5	$	286.7	$	—		$	437.4
Intercompany payables			117.4		98.6		90.3		(306.3		)	—
Other current liabilities	—		120.4		4.1		96.8		—			221.3
Total current liabilities	—		344.0		147.2		473.8		(306.3		)	658.7
Intercompany notes and accounts payable	323.2		3.7		—		201.6		(528.5		)	—
Long-term debt	—		1,500.0		5.3		53.8		—			1,559.1
Investment in subsidiaries obligation	—		—		15.2		—		(15.2		)	—
Other long-term liabilities	—		693.5		0.5		75.2		—			769.2
Total liabilities	323.2		2,541.2		168.2		804.4		(850.0		)	2,987.0
Total stockholders' equity	40.5		363.7		488.5		736.4		(1,588.6		)	40.5
Total liabilities and stockholders' equity	$	363.7	$	2,904.9	$	656.7	$	1,540.8	$	(2,438.6	)	$	3,027.5

Supplemental Guarantor Consolidating Statement of Cash Flows [Table Text Block]

Condensed Consolidating Statements of Cash Flows
2014	Holdings			AAM Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Elims			Consolidated
	(in millions)
Net cash provided by operating activities	$	—		$	83.4		$	41.9		$	193.1		$	—		$	318.4
Investing activities
Purchases of property, plant and equipment	—			(51.3		)	(18.6		)	(136.6		)	—			(206.5		)
Proceeds from sale of property, plant and equipment	—			7.9			0.4			0.8			—			9.1
Proceeds from government grants	—			—			—			2.1			—			2.1
Intercompany activity	—			—			(23.3		)	—			23.3			—
Proceeds from sale-leaseback of equipment	—			—			—			—			—			—
Net cash used in investing activities	—			(43.4		)	(41.5		)	(133.7		)	23.3			(195.3		)
Financing activities
Net debt activity	—			(7.8		)	(0.4		)	(13.8		)	—			(22.0		)
Debt issuance costs	—			(0.3		)	—			—			—			(0.3		)
Employee stock option exercises	—			1.2			—			—			—			1.2
Purchase of treasury stock	(0.3		)	—			—			—			—			(0.3		)
Intercompany activity	0.3			(0.3		)	—			23.3			(23.3		)	—
Net cash provided by (used in) financing activities	—			(7.2		)	(0.4		)	9.5			(23.3		)	(21.4		)
Effect of exchange rate changes on cash	—			—			—			(6.5		)	—			(6.5		)
Net increase in cash and cash equivalents	—			32.8			—			62.4			—			95.2
Cash and cash equivalents at beginning of period	—			36.9			—			117.1			—			154.0
Cash and cash equivalents at end of period	$	—		$	69.7		$	—		$	179.5		$	—		$	249.2
2013	Holdings			AAM Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Elims			Consolidated
Net cash provided by (used in) operating activities	$	—		$	(35.9	)	$	64.9		$	194.0		$	—		$	223.0
Investing activities
Purchases of property, plant and equipment	—			(61.2		)	(12.5		)	(178.2		)	—			(251.9		)
Proceeds from sale of property, plant and equipment	—			5.1			0.5			3.5			—			9.1
Proceeds from sale-leaseback of equipment	—			24.1			—			—			—			24.1
Intercompany activity	—			—			(52.6		)	—			52.6			—
Net cash used in investing activities	—			(32.0		)	(64.6		)	(174.7		)	52.6			(218.7		)
Financing activities
Net debt activity	—			110.1			(0.3		)	(5.0		)	—			104.8
Debt issuance costs	—			(16.6		)	—			(0.1		)	—			(16.7		)
Employee stock option exercises	—			1.1			—			—			—			1.1
Purchase of treasury stock	(0.4		)	—			—			—			—			(0.4		)
Intercompany activity	0.4			(0.4		)	—			52.6			(52.6		)	—
Net cash provided by (used in) financing activities	—			94.2			(0.3		)	47.5			(52.6		)	88.8
Effect of exchange rate changes on cash	—			—			—			(1.5		)	—			(1.5		)
Net increase in cash and cash equivalents	—			26.3			—			65.3			—			91.6
Cash and cash equivalents at beginning of period	—			10.6			—			51.8			—			62.4
Cash and cash equivalents at end of period	$	—		$	36.9		$	—		$	117.1		$	—		$	154.0

2012	Holdings			AAM Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Elims			Consolidated
Net cash provided by (used in) operating activities	$	—		$	(274.3	)	$	46.6		$	52.2		$	—		$	(175.5	)
Investing activities
Purchases of property, plant and equipment	—			(59.4		)	(9.0		)	(139.2		)	—			(207.6		)
Proceeds from sale of property, plant and equipment	—			7.0			—			3.1			—			10.1
Proceeds from sale-leaseback of equipment	—			12.1			—			—			—			12.1
Intercompany activity	—						(37.4		)				37.4			—
Net cash used in investing activities	—			(40.3		)	(46.4		)	(136.1		)	37.4			(185.4		)
Financing activities
Net debt activity	—			257.9			(0.2		)	16.2			—			273.9
Debt issuance costs	—			(10.6		)	—			—			—			(10.6		)
Employee stock option exercises, including tax benefit	—			0.1			—			—			—			0.1
Purchase of treasury stock	(5.9		)	—			—			—			—			(5.9		)
Purchase of noncontrolling interest	—			—			—			(4.0		)	—			(4.0		)
Intercompany activity	5.9			(5.9		)	—			37.4			(37.4		)	—
Net cash provided by (used in) financing activities	—			241.5			(0.2		)	49.6			(37.4		)	253.5
Effect of exchange rate changes on cash	—			—			—			0.6			—			0.6
Net decrease in cash and cash equivalents	—			(73.1		)	—			(33.7		)	—			(106.8		)
Cash and cash equivalents at beginning of period	—			83.7			—			85.5			—			169.2
Cash and cash equivalents at end of period	$	—		$	10.6		$	—		$	51.8		$	—		$	62.4

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Supplemental Guarantor Condensed Consolidating Financial Statements 2014 and 2013 Cash Flow Statements (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Net cash provided by (used in) operating activities	$ 318.4	$ 223.0	$ (175.5)
Investing activities
Purchases of property, plant and equipment	(206.5)	(251.9)	(207.6)
Proceeds from sale of property, plant and equipment	9.1	9.1	10.1
Proceeds from government grants	2.1	0	0
Intercompany activity	0	0	0
Proceeds from sale-leaseback of equipment	0	24.1	12.1
Net cash used in investing activities	(195.3)	(218.7)	(185.4)
Financing activities
Net debt activity	(22.0)	104.8	273.9
Debt issuance costs	(0.3)	(16.7)	(10.6)
Employee stock option exercises, including tax benefit	1.2	1.1	0.1
Purchase of treasury stock	(0.3)	(0.4)	(5.9)
Intercompany Activity - Financing	0	0	0
Net cash provided by (used in) financing activities	(21.4)	88.8	253.5
Effect of exchange rate changes on cash	(6.5)	(1.5)	0.6
Net increase in cash and cash equivalents	95.2	91.6	(106.8)
Cash and cash equivalents at beginning of year	154.0	62.4	169.2
Cash and cash equivalents at end of year	249.2	154.0	62.4
Holdings [Member]
Net cash provided by (used in) operating activities	0	0	0
Investing activities
Purchases of property, plant and equipment	0	0	0
Proceeds from sale of property, plant and equipment	0	0	0
Proceeds from government grants	0
Intercompany activity	0	0	0
Proceeds from sale-leaseback of equipment	0	0	0
Net cash used in investing activities	0	0	0
Financing activities
Net debt activity	0	0	0
Debt issuance costs	0	0	0
Employee stock option exercises, including tax benefit	0	0	0
Purchase of treasury stock	(0.3)	(0.4)	(5.9)
Intercompany Activity - Financing	0.3	0.4	5.9
Net cash provided by (used in) financing activities	0	0	0
Effect of exchange rate changes on cash	0	0	0
Net increase in cash and cash equivalents	0	0	0
Cash and cash equivalents at beginning of year	0	0	0
Cash and cash equivalents at end of year	0	0	0
AAM Inc. [Member]
Net cash provided by (used in) operating activities	83.4	(35.9)	(274.3)
Investing activities
Purchases of property, plant and equipment	(51.3)	(61.2)	(59.4)
Proceeds from sale of property, plant and equipment	7.9	5.1	7.0
Proceeds from government grants	0
Intercompany activity	0	0
Proceeds from sale-leaseback of equipment	0	24.1	12.1
Net cash used in investing activities	(43.4)	(32.0)	(40.3)
Financing activities
Net debt activity	(7.8)	110.1	257.9
Debt issuance costs	(0.3)	(16.6)	(10.6)
Employee stock option exercises, including tax benefit	1.2	1.1	0.1
Purchase of treasury stock	0	0	0
Intercompany Activity - Financing	(0.3)	(0.4)	(5.9)
Net cash provided by (used in) financing activities	(7.2)	94.2	241.5
Effect of exchange rate changes on cash	0	0	0
Net increase in cash and cash equivalents	32.8	26.3	(73.1)
Cash and cash equivalents at beginning of year	36.9	10.6	83.7
Cash and cash equivalents at end of year	69.7	36.9	10.6
Guarantor Subsidiaries of Certain Notes [Member]
Net cash provided by (used in) operating activities	41.9	64.9	46.6
Investing activities
Purchases of property, plant and equipment	(18.6)	(12.5)	(9.0)
Proceeds from sale of property, plant and equipment	0.4	0.5	0
Proceeds from government grants	0
Intercompany activity	23.3	52.6	37.4
Proceeds from sale-leaseback of equipment	0	0	0
Net cash used in investing activities	(41.5)	(64.6)	(46.4)
Financing activities
Net debt activity	(0.4)	(0.3)	(0.2)
Debt issuance costs	0	0	0
Employee stock option exercises, including tax benefit	0	0	0
Purchase of treasury stock	0	0	0
Intercompany Activity - Financing	0	0	0
Net cash provided by (used in) financing activities	(0.4)	(0.3)	(0.2)
Effect of exchange rate changes on cash	0	0	0
Net increase in cash and cash equivalents	0	0	0
Cash and cash equivalents at beginning of year	0	0	0
Cash and cash equivalents at end of year	0	0	0
Non-Guarantor Subsidiaries [Member]
Net cash provided by (used in) operating activities	193.1	194.0	52.2
Investing activities
Purchases of property, plant and equipment	(136.6)	(178.2)	(139.2)
Proceeds from sale of property, plant and equipment	0.8	3.5	3.1
Proceeds from government grants	2.1
Intercompany activity	0	0
Proceeds from sale-leaseback of equipment	0	0	0
Net cash used in investing activities	(133.7)	(174.7)	(136.1)
Financing activities
Net debt activity	(13.8)	(5.0)	16.2
Debt issuance costs	0	(0.1)	0
Employee stock option exercises, including tax benefit	0	0	0
Purchase of treasury stock	0	0	0
Intercompany Activity - Financing	23.3	52.6	37.4
Net cash provided by (used in) financing activities	9.5	47.5	49.6
Effect of exchange rate changes on cash	(6.5)	(1.5)	0.6
Net increase in cash and cash equivalents	62.4	65.3	(33.7)
Cash and cash equivalents at beginning of year	117.1	51.8	85.5
Cash and cash equivalents at end of year	179.5	117.1	51.8
Consolidation, Eliminations [Member]
Net cash provided by (used in) operating activities	0	0	0
Investing activities
Purchases of property, plant and equipment	0	0	0
Proceeds from sale of property, plant and equipment	0	0	0
Proceeds from government grants	0
Intercompany activity	(23.3)	(52.6)	(37.4)
Proceeds from sale-leaseback of equipment	0	0	0
Net cash used in investing activities	23.3	52.6	37.4
Financing activities
Net debt activity	0	0	0
Debt issuance costs	0	0	0
Employee stock option exercises, including tax benefit	0	0	0
Purchase of treasury stock	0	0	0
Intercompany Activity - Financing	(23.3)	(52.6)	(37.4)
Net cash provided by (used in) financing activities	(23.3)	(52.6)	(37.4)
Effect of exchange rate changes on cash	0	0	0
Net increase in cash and cash equivalents	0	0	0
Cash and cash equivalents at beginning of year	0	0	0
Cash and cash equivalents at end of year	$ 0	$ 0	$ 0

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Organization and Basis of Presentation Level 3 (Tables)

12 Months Ended

Dec. 31, 2014

Organization and Summary of Significant Accounting Policies [Abstract]

Schedule of Inventory, Current [Table Text Block]

Inventories consist of the following:

	December 31,
	2014			2013
	(in millions)
Raw materials and work-in-progress	$	243.8		$	263.4
Finished goods	32.9			25.7
Gross inventories	276.7			289.1
Inventory valuation reserves	(27.9		)	(27.3		)
Inventories, net	$	248.8		$	261.8

Property, Plant and Equipment [Table Text Block]

Property, plant and equipment consists of the following:

	Estimated	December 31,
	Useful Lives	2014			2013
	(years)	(in millions)
Land		$	26.2		$	29.5
Land improvements	10-15	19.0			18.9
Buildings and building improvements	15-40	314.3			306.6
Machinery and equipment	3-12	1,770.7			1,648.6
Construction in progress		91.4			95.1
		2,221.6			2,098.7
Accumulated depreciation and amortization		(1,160.5		)	(1,040.2		)
Property, plant and equipment, net		$	1,061.1		$	1,058.5

Schedule of Goodwill [Table Text Block]

The following table provides a reconciliation of changes in goodwill:

	December 31,
	2014			2013
	(in millions)
Beginning balance	$	156.4		$	156.4
Foreign currency translation	(1.4		)	—
Ending balance	$	155.0		$	156.4

XML

Employee Benefit Plans Expected Future Pension and Other Postretirement Payments (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	1 Months Ended
	Mar. 31, 2012	Jan. 31, 2015	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, expected future benefit payments in year one			$ 55.3
Defined benefit plan, expected future benefit payments in year two			55.4
Defined benefit plan, expected future benefit payments in year three			56.4
Defined benefit plan, expected future benefit payments in year four			56.6
Defined benefit plan, expected future benefit payments in year five			56.9
Defined benefit plan, expected future benefit payments in five fiscal years thereafter			293.6
Pension Contributions in Excess of Statutory Minimums	114.7
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, estimated future employer contributions in next fiscal year		$ 16.0

XML

Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Operating activities
Net income	$ 143.0	$ 94.5	$ 366.7
Adjustments to reconcile net income to cash provided by (used in) operating activities
Asset impairments and related indirect inventory obsolescence	0	0	5.8
Depreciation and amortization	199.9	177.0	152.2
Deferred income taxes	(9.2)	(18.7)	(343.8)
Stock-based compensation	9.7	10.8	2.4
Pensions and other postretirement benefits, net of contributions	31.8	6.5	(208.4)
Gain on disposal of property, plant and equipment, net	(2.6)	(3.5)	(1.9)
Debt refinancing and redemption costs	0	9.2	1.5
Changes in operating assets and liabilities
Accounts receivable	(78.3)	(0.3)	(130.6)
Inventories	10.9	(42.5)	(49.9)
Accounts payable and accrued expenses	13.7	66.3	60.9
Deferred revenue	24.5	(5.6)	(21.6)
Other assets and liabilities	(25.0)	(70.7)	(8.8)
Net cash provided by (used in) operating activities	318.4	223.0	(175.5)
Investing activities
Purchases of property, plant and equipment	(206.5)	(251.9)	(207.6)
Proceeds from sale of property, plant and equipment	9.1	9.1	10.1
Proceeds from sale-leaseback of equipment	0	24.1	12.1
Proceeds from government grants	2.1	0	0
Net cash used in investing activities	(195.3)	(218.7)	(185.4)
Financing activities
Net short-term borrowings (repayments) under credit facilities	0	(29.9)	10.4
Proceeds from issuance of long-term debt	5.0	786.7	562.6
Payments of other long-term debt and capital lease obligations	(27.0)	(652.0)	(299.1)
Debt issuance costs	(0.3)	(16.7)	(10.6)
Purchase of noncontrolling interest	0	0	(4.0)
Employee stock option exercises, including tax benefit	1.2	1.1	0.1
Purchase of treasury stock	(0.3)	(0.4)	(5.9)
Net cash provided by (used in) financing activities	(21.4)	88.8	253.5
Effect of exchange rate changes on cash	(6.5)	(1.5)	0.6
Net increase (decrease) in cash and cash equivalents	95.2	91.6	(106.8)
Cash and cash equivalents at beginning of year	154.0	62.4	169.2
Cash and cash equivalents at end of year	249.2	154.0	62.4
Supplemental cash flow information
Interest paid	91.1	123.2	88.9
Income taxes paid, net	$ 11.3	$ 11.6	$ 14.7

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Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Net income	$ 143.0	$ 94.5	$ 366.7
Other comprehensive income (loss), net of tax
Defined benefit plans, net of $23.2 million, $(41.3) million and $32.3 million of tax in 2014, 2013 and 2012, respectively	(42.7)	76.6	(58.9)
Foreign currency translation adjustment	(30.3)	(26.2)	(9.4)
Change in derivatives	(7.7)	(2.0)	7.8
Other comprehensive income (loss)	(80.7)	48.4	(60.5)
Comprehensive Income	62.3	142.9	306.2
Net loss attributable to noncontrolling interests	0	0	1.0
Foreign currency translation adjustments attributable to noncontrolling interests	0	0	0.3
Comprehensive income (loss) attributable to AAM	$ 62.3	$ 142.9	$ 306.9

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Commitments and Contingencies

12 Months Ended

Dec. 31, 2014

Commitments and Contingencies [Abstract]

Commitments and Contingencies Disclosure [Text Block]

9. COMMITMENTS AND CONTINGENCIES

PURCHASE COMMITMENTS Obligatedpurchase commitments for capital expenditures and related project expenses were approximately $109.8 million at December 31, 2014 and $161.4 million at December 31, 2013.

LEGAL PROCEEDINGS We are involved in various legal proceedings incidental to our business. Although the outcome of these matters cannot be predicted with certainty, we do not believe that any of these matters, individually or in the aggregate, will have a material effect on our financial condition, results of operations or cash flows.

We are subject to various federal, state, local and foreign environmental and occupational safety and health laws, regulations and ordinances, including those regulating air emissions, water discharge, waste management and environmental cleanup. We will continue to closely monitor our environmental conditions to ensure that we are in compliance with all laws, regulations and ordinances. We have made, and will continue to make, capital and other expenditures to comply with environmental requirements, including recurring administrative costs. Such expenditures were not significant during 2014, 2013 and 2012.

In 2012, the International UAW filed suit against AAM alleging that we violated certain provisions of the collective bargaining agreement covering represented hourly associates at the DMC and CKMF related to pension and postretirement benefits. In 2012, we recorded $28.7 million in cost of goods sold related to pension and postretirement benefits to be provided to certain eligible UAW associates as a result of our election to apply MAP-21 and the subsequent recertification of our U.S. hourly pension plan.  This suit was settled in 2012.

ENVIRONMENTAL OBLIGATIONS Due to the nature of our manufacturing operations, we have legal obligations to perform asset retirement activities pursuant to federal, state, and local requirements. The process of estimating environmental liabilities is complex. Significant uncertainty may exist related to the timing and method of the settlement of these obligations. Therefore, these liabilities are not reasonably estimable until a triggering event occurs that allows us to estimate a range and assess the probabilities of potential settlement dates and the potential methods of settlement.

In the future, we will update our estimated costs and potential settlement dates and methods and their associated probabilities based on available information. Any update may change our estimate and could result in a material adjustment to this liability.

PRODUCT WARRANTIES We record a liability for estimated warranty obligations at the dates our products are sold. These estimates are established using sales volumes and internal and external warranty data where there is no payment history and historical information about the average cost of warranty claims for customers with prior claims. We estimate our costs based on the contractual arrangements with our customers, existing customer warranty terms and internal and external warranty data, which includes a determination of our warranty claims and take actions to improve product quality and minimize warranty claims. We continuously evaluate these estimates and our customers' administration of their warranty programs. We closely monitor actual warranty claim data and adjust the liability, as necessary, on a quarterly basis.

We recorded $2.3 million and $9.9 million of expense in 2013 and 2012, respectively, related to a field action with our largest customer. In 2013, we made warranty payments of $12.3 million, of which $11.3 million related to this field action. During 2014 and 2013, we also made adjustments to our warranty accrual to reflect revised estimates regarding our projected future warranty obligations.

The following table provides a reconciliation of changes in the product warranty liability:

	December 31,
	2014			2013
	(in millions)
Beginning balance	$	14.3		$	29.1
Accruals	9.3			12.8
Settlements	(2.2		)	(12.3		)
Adjustments to prior period accruals	(8.7		)	(15.0		)
Foreign currency translation	(0.3		)	(0.3		)
Ending balance	$	12.4		$	14.3

XML

Segment and Geographic Information Segment and Geographic Information (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 939.5	$ 950.8	$ 946.9	$ 858.8	$ 831.3	$ 820.8	$ 799.6	$ 755.6	$ 3,696.0	$ 3,207.3	$ 2,930.9
Long-lived assets	1,750.9				1,689.4				1,750.9	1,689.4	1,627.8
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									2,073.6	1,682.0	1,576.6
Long-lived assets	885.9				850.0				885.9	850.0	865.3
Canada
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									64.6	74.4	75.0
Mexico [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									1,055.5	865.6	755.1
Long-lived assets	513.2				469.3				513.2	469.3	417.7
South America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									156.5	201.1	216.4
Long-lived assets	80.5				100.2				80.5	100.2	113.3
Asia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									238.6	255.2	214.5
Long-lived assets	177.3				176.7				177.3	176.7	159.0
Europe and other [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									107.2	129.0	93.3
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 94.0				$ 93.2				$ 94.0	$ 93.2	$ 72.5

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Reclassifications out of Accumulated Other Comprehensive Income Reclassifications out of Accumulated Other Comprehensive Income (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Defined benefit plans	$ (240.6)	$ (197.9)	$ 274.5
Total Other Comprehensive Income (Loss), Defined Benefit Plans, Net	(68.1)	67.7
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net (Gain) Loss, Net of Tax	25.4	8.9
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Net of Tax	(42.7)	76.6	(58.9)
Foreign currency translation adjustments	(48.9)	(18.6)	7.6
Foreign currency translation adjustment	(30.3)	(26.2)	(9.4)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Net of Tax	0	0
Foreign currency translation adjustments	(30.3)	(26.2)
Unrecognized gain (loss) on derivatives	(7.4)	0.3	2.3
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, before Tax	(6.8)	0.8
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	(0.9)	(2.8)
Change in derivatives	(7.7)	(2.0)	7.8
Accumulated other comprehensive income (loss), net of tax	(296.9)	(216.2)	(264.6)
Other Comprehensive Income (Loss) Arising During Period, Total, Net of Tax	(105.2)	42.3
Other Comprehensive Income (Loss), Reclassification Adjustments, Total, Before Tax	24.5	6.1
Other comprehensive income (loss), net of tax	(80.7)	48.4	(60.5)
Cost of Sales [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net (Gain) Loss, Net of Tax	23.6	4.7
Selling, General and Administrative Expenses [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net (Gain) Loss, Net of Tax	$ 1.8	$ 4.2

XML

Document and Entity Information Document (USD $)	12 Months Ended
	Dec. 31, 2014	Feb. 19, 2015	Jun. 30, 2014
Document Information [Line Items]
Entity Registrant Name	AMERICAN AXLE & MANUFACTURING HOLDINGS INC
Entity Central Index Key	0001062231
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Document Period End Date	Dec. 31, 2014
Amendment Flag	false
Document Type	10-K
Entity Well-known Seasoned Issuer	Yes
Entity Public Float			$ 1,426,087,818
Entity Common Stock, Shares Outstanding		75,761,739
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No

XML

Reclassifications out of Accumulated Other Comprehensive Income Reclassifications out of Accumulated Other Comprehensive Income

12 Months Ended

Dec. 31, 2014

Reclassifications out of Accumulated Other Comprehensive Income [Abstract]

Disclosure of Reclassification Amount [Text Block]

10. RECLASSIFICATIONS OUT OF ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)

Reclassification adjustments and other activity impacting accumulated other comprehensive income (loss) (AOCI) during the year ended December 31, 2014 and December 31, 2013 are as follows (in millions):

	Defined Benefit Plans				Foreign Currency Translation Adjustments			Unrecognized Gain (Loss) on Derivatives				Total
Balance at December 31, 2013	$	(197.9	)		$	(18.6	)	$	0.3			$	(216.2	)
Other comprehensive loss before reclassifications	(68.1		)	(a)	(30.3		)	(6.8		)		(105.2		)
Amounts reclassified from accumulated other comprehensive income (loss) into net income	25.4			(a)(b)(d)	—			(0.9		)	(c)	24.5
Net current period other comprehensive loss	(42.7		)		(30.3		)	(7.7		)		(80.7		)
Balance at December 31, 2014	$	(240.6	)		$	(48.9	)	$	(7.4	)		$	(296.9	)
	Defined Benefit Plans				Foreign Currency Translation Adjustments			Unrecognized Gain on Derivatives				Total
Balance at December 31, 2012	$	(274.5	)		$	7.6		$	2.3			$	(264.6	)
Other comprehensive income (loss) before reclassifications	67.7			(a)	(26.2		)	0.8				42.3
Amounts reclassified from accumulated other comprehensive income (loss) into net income	8.9			(a)(b)	—			(2.8		)	(c)	6.1
Net current period other comprehensive income (loss)	76.6				(26.2		)	(2.0		)		48.4
Balance at December 31, 2013	$	(197.9	)		$	(18.6	)	$	0.3			$	(216.2	)
(a) These amounts are net of tax of $36.6 million and $(13.4) million for the other comprehensive loss before reclassifications and the amounts reclassified from AOCI, respectively, for the year ended December 31, 2014, and $(36.7) million and $(4.6) million, respectively, for the year ended December 31, 2013.
(b) The net amount reclassified from AOCI included $23.6 million in cost of goods sold (COGS) and $1.8 million in selling, general & administrative expenses (SG&A) for the year ended December 31, 2014 and $4.7 million in COGS and $4.2 million in SG&A for the year ended December 31, 2013.
(c) The amounts reclassified from AOCI are included in COGS.
(d) Includes a reclassification of $23.1 million, net of tax, in the fourth quarter of 2014, related to our terminated vested lump-sum pension payout in the U.S.

XML

Income Taxes Components of Current Deferred Tax Assets and Liabilities (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Total current deferred tax assets	$ 40.2	$ 34.9
Unrealized foreign exchange gain and other	(0.1)	(0.1)
Current deferred tax asset, net	40.1	36.3
Deferred Tax Assets, Current [Member]
Employee benefits	26.0	14.5
Inventory	7.5	8.0
Prepaid taxes and other	16.9	24.6
Valuation allowance	(10.2)	(10.7)
Total current deferred tax assets	$ 40.2	$ 36.4

XML

Commitments and Contingencies Product Liability (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Movement in Standard Product Warranty Accrual [Roll Forward]
Beginning balance	$ 14.3	$ 29.1
Accruals	9.3	12.8
Settlements	(2.2)	(12.3)
Adjustments to prior period accruals	(8.7)	(15.0)
Foreign currency translation and other	(0.3)	(0.3)
Ending balance	12.4	14.3
Field Action [Member]
Movement in Standard Product Warranty Accrual [Roll Forward]
Accruals		2.3	9.9
Settlements		$ (11.3)

XML

Consolidated Statements of Comprehensive Income Parenthetical (Parentheticals) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Tax	$ 23.2	$ (41.3)	$ 32.3

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Fair Value

12 Months Ended

Dec. 31, 2014

Fair Value [Abstract]

Fair Value Disclosures [Text Block]

4. FAIR VALUE

The fair value accounting guidance defines fair value as “the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date.”  The definition is based on an exit price rather than an entry price, regardless of whether the entity plans to hold or sell the asset.  This guidance also establishes a fair value hierarchy to prioritize inputs used in measuring fair value as follows:

• Level 1:  Observable inputs such as quoted prices in active markets;

• Level 2:  Inputs, other than quoted prices in active markets, that are observable either directly or indirectly; and

• Level 3:  Unobservable inputs in which there is little or no market data, which require the reporting entity to develop its own assumptions.

FINANCIAL INSTRUMENTSThe estimated fair values of our financial assets and liabilities that are recognized at fair value on a recurring basis, using available market information and other observable data are as follows:

	December 31, 2014				December 31, 2013
	Carrying Amount		Fair Value		Carrying Amount		Fair Value		Input
	(in millions)				(in millions)
Balance Sheet Classification
Cash equivalents	$	35.3	$	35.3	$	6.1	$	6.1	Level 1
Prepaid expenses and other
Currency forward contracts	—		—		0.7		0.7		Level 2
Other accrued expenses
Currency forward contracts	8.3		8.3		0.4		0.4		Level 2
Other long-term liabilities
Currency forward contracts	0.1		0.1		—		—		Level 2

The carrying values of our cash, accounts receivable, accounts payable and accrued liabilities approximate their fair values due to the short-term maturities of these instruments.  The carrying values of our borrowings under the foreign credit facilities approximate their fair values due to the frequent resetting of the interest rates.  We estimated the fair value of our outstanding debt using available market information and other observable data to be as follows:

	December 31, 2014				December 31, 2013
	Carrying Amount		Fair Value		Carrying Amount		Fair Value		Input
	(in millions)				(in millions)
Revolving Credit Facility	$	—	$	—	$	—	$	—	Level 2
Term Facility	142.5		141.1		150.0		147.8		Level 2
7.75% Notes	200.0		224.0		200.0		227.5		Level 2
6.625% Notes	550.0		583.0		550.0		578.9		Level 2
6.25% Notes	400.0		419.0		400.0		423.0		Level 2
5.125% Notes	200.0		202.6		200.0		206.0		Level 2

Investments in our defined benefit pension plans are stated at fair value. See Note 5 - Employee Benefit Plans for additional fair value disclosures of our pension plan assets.

LONG-LIVED ASSETS In 2012 as part of our impairment analysis, we were required to measure the fair value of certain long-lived assets.  We considered the expected future use of certain long-lived assets remaining at our Detroit Manufacturing Complex (DMC). Assets that were not to be redeployed to other AAM facilities were determined to be fully impaired.

The following table summarizes impairments of long-lived assets measured at fair value on a nonrecurring basis subsequent to initial recognition:

Balance Sheet Classification	Fair Value Measurements using Level 3 Inputs		Asset Impairment Recorded in Twelve Months ended December 31, 2012
Property, plant and equipment, net	$	—	$	5.8

In 2012, we reassessed the expected future use of certain assets remaining at DMC that were previously leased assets that had been purchased in 2011 for $18.6 million. As a result, we recorded an impairment charge of $5.8 million related to the assets that we no longer intended to redeploy and use at another AAM facility.

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Derivatives

12 Months Ended

Dec. 31, 2014

Derivatives [Abstract]

Derivative Instruments and Hedging Activities Disclosure [Text Block]

3. DERIVATIVES AND RISK MANAGEMENT

DERIVATIVE FINANCIAL INSTRUMENTS In the normal course of business, we are exposed to market risk associated with changes in foreign currency exchange rates and interest rates. To manage a portion of these inherent risks, we may purchase certain types of derivative financial instruments based on management's judgment of the trade-off between risk, opportunity and cost. We do not hold or issue derivative financial instruments for trading or speculative purposes. The ineffective portion of any hedge is included in current earnings. The impact of hedge ineffectiveness was not significant in any of the periods presented.

CURRENCY FORWARD CONTRACTS From time to time, we use foreign currency forward contracts to reduce the effects of fluctuations in exchange rates, primarily relating to the Mexican Peso, Euro, Swedish Krona, Polish Zloty and Pound Sterling. We had forward contracts with a notional amount of $99.3 million and $67.2 million outstanding at December 31, 2014 and 2013, respectively, that hedge our exposure to changes in foreign currency exchange rates for our payroll expenses, indirect inventory and other working capital items.

The following table summarizes the reclassification of pre-tax derivative gains (losses) into net income from accumulated other comprehensive income (loss):

	Location of Gain Reclassified into Net Income	Gain Reclassified During the Twelve Months Ended December 31,				Loss Expected to be Reclassified During the Next 12 Months
		2014		2013
		(in millions)
Currency forward contracts	Cost of Goods Sold	$	0.9	$	2.8	$	(7.2	)

CONCENTRATIONS OF CREDIT RISK In the normal course of business, we provide credit to customers. We periodically evaluate the creditworthiness of our customers and we maintain reserves for potential credit losses.

Sales to GM were approximately 68% of our consolidated net sales in 2014, 71% in 2013, and 73% in 2012 . Accounts and other receivables due from GM were $343.1 million at year-end 2014 and $278.5 million at year-end 2013. Sales to FCA US LLC, formerly known as Chrysler Group LLC, (Chrysler) were approximately 18% of our consolidated net sales in 2014, 12% in 2013 and 10% in 2012. Accounts receivable due from Chrysler were $99.3 million at year-end 2014 and $85.9 million at year-end 2013. No other single customer accounted for more than 10% of our consolidated net sales in any year presented.

In addition, our total GM postretirement cost sharing asset was $287.8 million as of December 31, 2014 and $255.9 million as of December 31, 2013. See Note 5 - Employee Benefit Plans for more detail on this cost sharing asset.

We diversify the concentration of invested cash and cash equivalents among different financial institutions and we monitor the selection of counterparties to other financial instruments to avoid unnecessary concentrations of credit risk.

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Organization and Basis of Presentation Level 2 Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2014

Organization and Summary of Significant Accounting Policies [Abstract]

Consolidation, Policy [Policy Text Block]

PRINCIPLES OF CONSOLIDATION We include the accounts of Holdings and its subsidiaries in our consolidated financial statements. We eliminate the effects of all intercompany transactions, balances and profits in our consolidation.

Comparability of Prior Year Financial Data, Policy [Policy Text Block]

REVISION OF PRIOR PERIOD FINANCIAL STATEMENTS In connection with the preparation of our consolidated financial statements for the year ended December 31, 2014, we determined that entries recorded in the third quarter of 2014 to reduce certain accrued accounts payable balances by $8.4 million were previously recorded as a reduction of cost of goods sold but should have been recorded as an adjustment to opening accumulated deficit because the amounts giving rise to the correction originated in periods prior to January 1, 2012.

In accordance with ASC 250 Accounting Changes and Error Corrections as well as the SEC's Staff Accounting Bulletin No. 99, Materiality, we evaluated the materiality of this error on prior period financial statements and determined that it did not result in a material misstatement to the financial conditions, results of operations, or cash flows for any of the periods presented.

We also determined that the effect of recording the correction during the third quarter of 2014 was material to the financial statements for the three months ended September 30, 2014. As a result, prior period financial statements have been revised in accordance with ASC 250 and the SEC's Staff Accounting Bulletin No. 108, Considering the Effects of Prior Year Misstatements when Quantifying Misstatements in Current Year Financial Statements, and accumulated deficit at January 1, 2012 was reduced by $6.9 million. Consequently, the previously reported December 31, 2013 balances for accounts payable of $445.8 million, accumulated deficit of $181.3 million and current deferred income tax assets of $36.4 million were reduced by $8.4 million, $6.9 million and $1.5 million, respectively.

Revenue Recognition, Policy [Policy Text Block]

REVENUE RECOGNITION We recognize revenue when products are shipped to our customers and title transfers under standard commercial terms or when realizable in accordance with our commercial agreements. If we are uncertain as to whether we will be successful collecting a balance in accordance with our understanding of a commercial agreement, we do not recognize the revenue or cost recovery until such time as the uncertainty is removed.

In the first quarter of 2014, we reached an agreement with General Motors Company (GM) to increase installed capacity and adjust product mix for our largest vehicle program. As a result of this agreement, we received $32.8 million in 2014 and recorded the payments as deferred revenue. We will recognize this deferred revenue into sales over the life of the program on a straight line basis over approximately 5 years, which is the period we expect GM to benefit from this capacity and mix change. In 2014, we recognized revenue of $5.4 million related to this agreement. As of December 31, 2014, we have $6.9 million of deferred revenue that is classified as a current liability and $20.5 million of deferred revenue that is recorded as a noncurrent liability on our Consolidated Balance Sheet.

Also in the first quarter of 2014, we reached an agreement with GM to recover certain costs related to the delay of another major product program. We received $9.3 million in 2014 related to this agreement and initially recorded deferred revenue of $9.3 million. We will recognize this deferred revenue into sales over the life of the program on a straight-line basis over approximately 8 years, which is the period we expect GM to benefit from this agreement. We began recognizing this deferred revenue as revenue in the third quarter of 2014 when this program launched in certain markets. In 2014, we recognized revenue of $0.5 million related to this agreement. As of December 31, 2014, we have recorded deferred revenue of $8.8 million, $1.1 million of which is classified as a current liability and $7.7 million which is recorded as a noncurrent liability on our Consolidated Balance Sheet.

In 2009, we entered into a settlement and commercial agreement (2009 Settlement and Commercial Agreement) with General Motors Company (GM). As part of this agreement, we received $110.0 million from GM, of which we recorded $79.7 million as deferred revenue.  As of December 31, 2014, our deferred revenue related to the 2009 Settlement and Commercial Agreement is $37.5 million, $8.0 million of which is classified as a current liability and $29.5 million of which is recorded as a noncurrent liability on our Consolidated Balance Sheet.  We recognize this deferred revenue into revenue on a straight-line basis over 120 months, which ends September 2019 and is the period that we expect GM to benefit under the 2009 Settlement and Commercial Agreement.  We recognized revenue of $8.0 million, in 2014, 2013 and 2012 related to this agreement.

As of December 31, 2014, the majority of the remaining deferred revenue primarily relates to customer payments to implement capacity programs, which is generally recognized into revenue over the life of these programs. We recognized $7.5 million, $10.5 million and $13.1 million of revenue for these programs in 2014, 2013 and 2012, respectively.

Research and Development Expense, Policy [Policy Text Block]

RESEARCH AND DEVELOPMENT (R&D) COSTS We expense R&D, as incurred, in selling, general and administrative expenses on our Consolidated Statement of Income. R&D spending, net of engineering, design and development recoveries, was $103.9 million, $103.4 million and $123.4 million in 2014, 2013 and 2012, respectively.

Cash and Cash Equivalents, Policy [Policy Text Block]

CASH AND CASH EQUIVALENTS Cash and cash equivalents include all cash balances and highly liquid investments in money market funds with maturities of 90 days or less at the time of purchase.

Trade and Other Accounts Receivable, Policy [Policy Text Block]

ACCOUNTS RECEIVABLE The majority of our accounts receivable are due from original equipment manufacturers (OEMs) in the automotive industry and are past due when payment is not received within the stated terms. Trade accounts receivable for our largest customer, GM, are generally due within approximately 50 days from the date of receipt.

Amounts due from customers are stated net of allowances for doubtful accounts. We determine our allowances by considering factors such as the length of time accounts are past due, our previous loss history, the customer's ability to pay its obligation to us, and the condition of the general economy and the industry as a whole. The allowance for doubtful accounts was $4.6 million and $4.9 million as of December 31, 2014 and 2013, respectively. We write-off accounts receivable when they become uncollectible.

Property, Plant and Equipment, Preproduction Design and Development Costs [Policy Text Block]

CUSTOMER TOOLING AND PRE-PRODUCTION COSTS RELATED TO LONG-TERM SUPPLY AGREEMENTS Engineering, R&D, and other pre-production design and development costs for products sold on long-term supply arrangements are expensed as incurred unless we have a contractual guarantee for reimbursement from the customer. Costs for tooling used to make products sold on long-term supply arrangements for which we have either title to the assets or the noncancelable right to use the assets during the term of the supply arrangement are capitalized in property, plant and equipment. Capitalized items and customer receipts in excess of tooling costs specifically related to a supply arrangement are amortized over the shorter of the term of the arrangement or over the estimated useful lives of the related assets.

Inventory, Policy [Policy Text Block]

INVENTORIES We state our inventories at the lower of cost or market.  The cost of our inventories is determined using the FIFO method.  When we determine that our gross inventories exceed usage requirements, or if inventories become obsolete or otherwise not saleable, we record a provision for such loss as a component of our inventory accounts.

Inventories consist of the following:

	December 31,
	2014			2013
	(in millions)
Raw materials and work-in-progress	$	243.8		$	263.4
Finished goods	32.9			25.7
Gross inventories	276.7			289.1
Inventory valuation reserves	(27.9		)	(27.3		)
Inventories, net	$	248.8		$	261.8

Property, Plant and Equipment, Policy [Policy Text Block]

PROPERTY, PLANT AND EQUIPMENT We state property, plant and equipment, including amortizable tooling, at historical cost, as adjusted for impairments. Construction in progress includes costs incurred for the construction of buildings and building improvements, and machinery and equipment in process. Repair and maintenance costs that do not extend the useful life or otherwise improve the utility of the asset beyond its existing useful state are expensed in the period incurred.

We record depreciation and tooling amortization on the straight-line method over the estimated useful lives of the depreciable assets. Depreciation and tooling amortization amounted to $166.5 million, $151.8 million and $130.9 million in 2014, 2013 and 2012, respectively.

Property, plant and equipment consists of the following:

	Estimated	December 31,
	Useful Lives	2014			2013
	(years)	(in millions)
Land		$	26.2		$	29.5
Land improvements	10-15	19.0			18.9
Buildings and building improvements	15-40	314.3			306.6
Machinery and equipment	3-12	1,770.7			1,648.6
Construction in progress		91.4			95.1
		2,221.6			2,098.7
Accumulated depreciation and amortization		(1,160.5		)	(1,040.2		)
Property, plant and equipment, net		$	1,061.1		$	1,058.5

PROPERTY, PLANT AND EQUIPMENT We state property, plant and equipment, including amortizable tooling, at historical cost, as adjusted for impairments. Construction in progress includes costs incurred for the construction of buildings and building improvements, and machinery and equipment in process. Repair and maintenance costs that do not extend the useful life or otherwise improve the utility of the asset beyond its existing useful state are expensed in the period incurred.

We record depreciation and tooling amortization on the straight-line method over the estimated useful lives of the depreciable assets. Depreciation and tooling amortization amounted to $166.5 million, $151.8 million and $130.9 million in 2014, 2013 and 2012, respectively.

Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]

IMPAIRMENT OF LONG-LIVED ASSETS When impairment indicators exist, we evaluate the carrying value of long-lived assets for potential impairment. We consider projected future undiscounted cash flows, trends and other circumstances in making such estimates and evaluations. If impairment is deemed to exist, the carrying amount of the asset is adjusted based on its fair value. Recoverability of assets “held for use” is determined by comparing the forecasted undiscounted cash flows of the operations to which the assets relate to their carrying amount. When the carrying value of an asset group exceeds its fair value and is therefore nonrecoverable, those assets are written down to fair value. Fair value is determined based on market prices, when available, or a discounted cash flow analysis performed using management estimates.

Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]

GOODWILL We record goodwill when the purchase price of acquired businesses exceeds the value of their identifiable net tangible and intangible assets acquired. We periodically evaluate goodwill for impairment in accordance with the accounting guidance for goodwill and other indefinite-lived intangibles. We completed impairment tests in 2014 and 2013 and concluded that there was no impairment of our goodwill. The following table provides a reconciliation of changes in goodwill:

	December 31,
	2014			2013
	(in millions)
Beginning balance	$	156.4		$	156.4
Foreign currency translation	(1.4		)	—
Ending balance	$	155.0		$	156.4

Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block]

INTANGIBLE ASSETS We are currently in the process of testing, validating and launching global enterprise resource planning (ERP) systems, at certain key locations, to upgrade many of our existing operating and financial systems. In connection with the development of these ERP systems, we have recorded an intangible asset of $19.2 million on our Consolidated Balance Sheet as of December 31, 2014. The intangible asset is related to costs incurred to obtain software licenses from a third party, as well as costs to design and develop this internal-use software. We incurred and capitalized $11.4 million and $7.8 million of these costs in 2014 and 2013, respectively. This intangible asset is classified as other assets and deferred charges on our Consolidated Balance Sheet and will be amortized over the estimated useful life of our ERP systems. We recorded $0.4 million and $0.1 million of expense for the amortization of these intangible assets in 2014 and 2013, respectively.

In connection with our e-AAM subsidiary, we have in-process research and development intangible assets which represent the technology that will be utilized in products to be launched in 2016. Accordingly, we will begin amortizing this asset on a straight-line basis at the start of production through the expected life cycle of the related products, which is expected to be approximately 5-7 years. These intangible assets are classified as other assets and deferred charges on our Consolidated Balance Sheet. The following table provides a reconciliation of changes in the carrying value of our in-process research and development intangible assets:

	December 31,
	2014			2013
	(in millions)
Beginning balance	$	7.4		$	7.4
Foreign currency translation	(1.2		)	—
Ending balance	$	6.2		$	7.4

Debt, Policy [Policy Text Block]

DEBT ISSUANCE COSTS The costs related to the issuance or modification of long-term debt are deferred and amortized into interest expense over the life of each debt issue. As of December 31, 2014 and December 31, 2013, our unamortized debt issuance costs were $29.5 million and $35.6 million, respectively. Deferred amounts associated with the extinguishment of debt are expensed and classified as debt refinancing and redemption costs on our Consolidated Statement of Income.

Derivatives, Policy [Policy Text Block]

DERIVATIVES We recognize all derivatives on the balance sheet at fair value and we are not subject to a master netting agreement. If a derivative qualifies under the accounting guidance as a hedge, depending on the nature of the hedge, changes in the fair value of the derivative are either offset against the change in fair value of the hedged asset, liability or firm commitment through earnings or recognized in other comprehensive income until the hedged item is recognized in earnings. The ineffective portion of a derivative's change in fair value, and changes in the fair value of derivatives that do not qualify as hedges, are immediately recognized in earnings. See Note 3 - Derivatives and Risk Management, for more detail on our derivatives.

Foreign Currency Transactions and Translations Policy [Policy Text Block]

CURRENCY TRANSLATION We translate the assets and liabilities of our foreign subsidiaries to U.S. dollars at end-of-period exchange rates. We translate the income statement elements of our foreign subsidiaries to U.S. dollars at average-period exchange rates. We report the effect of translation for our foreign subsidiaries that use the local currency as their functional currency as a separate component of stockholders' equity. Gains and losses resulting from the remeasurement of assets and liabilities in a currency other than the functional currency of a subsidiary are reported in current period income. We also report any gains and losses arising from transactions denominated in a currency other than the functional currency of a subsidiary in current period income. These foreign currency gains and losses resulted in a gain of $6.4 million and losses of $4.2 million and $6.3 million, for the years ended 2014, 2013 and 2012, respectively.

Use of Estimates, Policy [Policy Text Block]

USE OF ESTIMATES In order to prepare consolidated financial statements in conformity with accounting principles generally accepted in the United States of America (GAAP), we are required to make estimates and assumptions that affect the reported amounts and disclosures in our consolidated financial statements. Actual results could differ from those estimates.

New Accounting Pronouncements, Policy [Policy Text Block]

EFFECT OF NEW ACCOUNTING STANDARDS On January 1, 2014, new accounting guidance became effective regarding financial statement presentation of an unrecognized tax benefit when a net operating loss (NOL) carryforward, a similar tax loss, or a tax credit carryforward exists. The new guidance requires entities to present an unrecognized tax benefit, or a portion of an unrecognized tax benefit, in the financial statements as a reduction to a deferred tax asset for an NOL carryforward, a similar tax loss, or a tax credit carryforward, except when one is not available as of the reporting date or the entity does not intend to use the deferred tax asset for this purpose. This guidance does not affect the tabular reconciliation of the total amounts of unrecognized tax benefits, as the tabular reconciliation presents the gross amount of unrecognized tax benefits. The adoption of this new guidance has had no impact on our consolidated financial statements.

In May 2014, new accounting guidance was issued that outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. The guidance is based on the principle that an entity should recognize revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services.  The guidance also requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments and assets recognized from costs incurred to fulfill a contract.  Entities have the option of using either a full retrospective or a modified retrospective approach for the adoption of the new standard.  This guidance becomes effective for AAM at the beginning of our 2017 fiscal year and early adoption is not permitted.  We are currently assessing the impact that this standard will have on our consolidated financial statements.

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Segment and Geographic Information

12 Months Ended

Dec. 31, 2014

Segment and Geographic Information [Abstract]

Segment Reporting Disclosure [Text Block]

11. SEGMENT AND GEOGRAPHIC INFORMATION

We operate in one reportable segment: the manufacture, engineer, design and validation of driveline systems and related components and chassis modules for light trucks, SUVs, passenger cars, crossover vehicles and commercial vehicles. Financial information relating to our operations by geographic area is presented in the following table. Net sales are attributed to countries based upon location of customer. Long-lived assets exclude deferred income taxes.

	December 31,
	2014		2013		2012
	(in millions)
Net sales
United States	$	2,073.6	$	1,682.0	$	1,576.6
Canada	64.6		74.4		75.0
Mexico	1,055.5		865.6		755.1
South America	156.5		201.1		216.4
Asia	238.6		255.2		214.5
Europe and other	107.2		129.0		93.3
Total net sales	$	3,696.0	$	3,207.3	$	2,930.9
Long-lived assets
United States	$	885.9	$	850.0	$	865.3
Mexico	513.2		469.3		417.7
South America	80.5		100.2		113.3
Asia	177.3		176.7		159.0
Europe	94.0		93.2		72.5
Total long-lived assets	$	1,750.9	$	1,689.4	$	1,627.8

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Income Taxes Unrecognized Tax Benefts (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Contingency [Line Items]
Unrecognized tax benefits, beginning balance	$ 21.7	$ 20.7	$ 25.8
Increase in prior year tax positions	10.5	6.1	0
Decrease in prior year tax positions	(0.5)	(4.4)	(1.1)
Increase in current year tax positions	15.6	4.0	0.4
Settlement		(4.7)	4.4
Unrecognized tax benefits, ending balance	47.3	21.7	20.7
Unrecognized tax benefits, interest and penalties, beginning balance	4.1	10.2	7.4
Interest and penalties, increase in prior year tax positions	8.1	0.1	2.8
Interest and penalties, decrease in prior year tax positions	0	6.2	0
Interest and penalties, increase in current year tax positions	0	0	0
Interest and penalties, settlement		0	0
Unrecognized tax benefits, interest and penalties, ending balance	12.2	4.1	10.2
Unrecognized tax benefits, income tax penalties and interest expense	$ 8.1	$ (6.1)	$ 2.8

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Income Taxes

12 Months Ended

Dec. 31, 2014

Income Taxes [Abstract]

Income Tax Disclosure [Text Block]

7. INCOME TAXES

Income before income taxes for U.S. and non-U.S. operations was as follows:

	2014		2013			2012
	(in millions)
U.S. income (loss)	$	12.0	$	(23.8	)	$	(6.0	)
Non - U.S. income	164.7		110.1			37.5
Total income before income taxes	$	176.7	$	86.3		$	31.5

The following is a summary of the components of our provisions for income taxes:

	2014			2013			2012
	(in millions)
Current
Federal	$	0.6		$	(1.3	)	$	(3.3	)
Other state and local	0.1			0.1			1.1
Foreign	44.2			12.1			10.2
Total current	$	44.9		$	10.9		$	8.0
Deferred
Federal	$	(11.6	)	$	(9.3	)	$	(347.1	)
Foreign	0.4			(9.8		)	3.9
Total deferred	(11.2		)	(19.1		)	(343.2		)
Total income tax expense (benefit)	$	33.7		$	(8.2	)	$	(335.2	)

The following is a reconciliation of our provision for income taxes to the expected amounts using statutory rates:

	2014		2013		2012
Federal statutory	35.0	%	35.0	%	35.0	%
Foreign income taxes	(25.1	)	(48.5	)	(85.0	)
Change in enacted tax rate	—		(9.9	)	—
State and local	0.1		0.2		3.5
Tax Credits	(11.4	)	—		—
Valuation allowance	4.5		12.4		(985.0	)
U.S. tax on unremitted foreign earnings	1.9		(0.2	)	(29.5	)
Uncertain tax positions	13.0		(0.5	)	(5.2	)
Other	1.1		2.0		2.0
Effective income tax rate	19.1	%	(9.5	)%	(1,064.2	)%

Our income tax expense and effective tax rate for 2014 and 2013 primarily reflect favorable foreign tax rates, along with our inability to realize a tax benefit for current foreign losses. In 2014, we recorded tax expense of $23.1 million for changes to prior year uncertain tax positions related to transfer pricing and expense of $3.4 million for a change in estimate for U.S. tax on unremitted foreign earnings. We also recorded a net tax benefit of $20.1 million in 2014 related to our ability to utilize tax credits in future periods resulting in the recognition of a deferred tax asset.

In 2013, new Mexican tax reform was enacted that, among other things, increased the tax rate related to Maquiladora Companies from 17.5% to 30%. We recorded a tax benefit of $8.5 million as a result of revaluing our deferred tax assets at the newly enacted rate. In 2013, we recorded tax expense of $4.8 million relating to changes in estimates in the U.S. and certain foreign jurisdictions. Our income tax benefit and effective tax rate for 2013 also reflects the impact of recording a tax benefit of $1.5 million relating to the release of a prior year unrecognized tax benefit due to the expiration of the applicable statute of limitations and a tax benefit of $3.3 million relating to an election we made in 2013 regarding the treatment of foreign exchange gains and losses in a foreign jurisdiction. During 2013, we also settled various income tax audits resulting in a reduction of our liability for unrecognized income tax benefits of $8.4 million and a cash payment of $4.7 million.

In 2012, our business returned to a position of cumulative profitability on a pre-tax basis, considering our operating results for the three years ended December 31, 2012. We concluded that this record of cumulative profitability in recent years, in addition to the restructuring of our U.S. operations and our long range forecast showing continued profitability, provided sufficient positive evidence that our net U.S. federal tax benefits more likely than not would be realized. Accordingly, in 2012, we released the valuation allowance against our net federal deferred assets for entities in the U.S., resulting in a $337.5 million benefit in our 2012 provision for income taxes. Our income tax benefit and effective tax rate in 2012 reflect the impact of this valuation allowance reversal. Our income tax expense and effective tax rate for 2012 also reflect a net tax expense of $1.3 million related to the amendment of state income tax returns as a result of the settlement of federal income tax audits for the tax years 2004 through 2007.

As of December 31, 2014 and 2013, we have refundable income taxes of $5.6 million and $4.9 million, respectively, classified as prepaid expenses and other on our Consolidated Balance Sheet. We also have income taxes payable of $3.0 million and $2.6 million classified as other accrued expenses on our Consolidated Balance Sheet as of December 31, 2014 and 2013, respectively. As of December 31, 2014 and 2013, we have accrued value added tax payable of $36.1 million and $38.3 million, respectively, classified as other accrued expenses on our Consolidated Balance Sheet.

The following is a summary of the significant components of our deferred tax assets and liabilities:

	December 31,
	2014			2013
	(in millions)
Current deferred tax assets
Employee benefits	$	26.0		$	14.5
Inventory	7.5			8.0
Prepaid taxes and other	16.9			24.6
Valuation allowance	(10.2		)	(10.7		)
Total current deferred tax assets	$	40.2		$	36.4
Current deferred tax liabilities
Unrealized foreign exchange gain and other	(0.1		)	(0.1		)
Current deferred tax asset, net	$	40.1		$	36.3

Current deferred tax assets and liabilities recognized in our Consolidated Balance Sheets are as follows:

	December 31,
	2014		2013
	(in millions)
U.S. federal and state deferred tax asset, net	$	27.0	$	17.1
Other foreign deferred tax asset, net	13.1		19.2
Current deferred tax asset, net	$	40.1	$	36.3

The following is a summary of the significant components of our noncurrent deferred tax assets and liabilities:

	December 31,
	2014			2013
	(in millions)
Noncurrent deferred tax assets
Employee benefits	$	193.9		$	161.5
Net operating loss (NOL) carryforwards	104.7			176.9
Tax credit carryforwards	69.8			82.9
Capital allowance carryforwards	14.4			16.0
Fixed assets	6.6			10.3
Deferred revenue	12.6			15.7
Capitalized expenditures	111.2			113.6
Other	2.3			2.9
Valuation allowances	(146.7		)	(153.0		)
Noncurrent deferred tax assets	368.8			426.8
Noncurrent deferred tax liabilities
U.S. tax on unremitted foreign earnings	—			(85.0		)
Fixed assets and other	(9.1		)	(9.8		)
Noncurrent deferred tax asset, net	$	359.7		$	332.0

Noncurrent deferred tax assets and liabilities recognized in our Consolidated Balance Sheets are as follows:

	December 31,
	2014			2013
	(in millions)
U.S. federal and state deferred tax asset, net	$	362.2		$	337.2
Other foreign deferred tax asset (liability), net	(2.5		)	(5.2		)
Noncurrent deferred tax asset, net	$	359.7		$	332.0

DEFERRED INCOME TAX ASSETS AND LIABILITIES AND VALUATION ALLOWANCES The deferred income tax assets and liabilities previously summarized reflect the impact of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the basis of such assets and liabilities as measured by tax laws. As of December 31, 2014 and December 31, 2013, we had deferred tax assets from domestic and foreign NOL and tax credit carryforwards of $188.9 million and $275.8 million, respectively. Approximately $85.6 million of the deferred tax assets at December 31, 2014 relate to tax credits that can be carried forward indefinitely with the remainder having carryover periods of 5 to 20 years. The deferred tax asset relating to U.S. net operating losses and tax credit carryforwards as of December 31, 2014 is lower than the actual amount reported and expected to be reported on our U.S. tax returns by $3.2 million. This difference is the result of tax deductions in excess of financial statement amounts for stock based compensation. When this amount is realized, we will record a credit to additional paid in capital and reduce our income taxes payable.

Accounting guidance for income taxes requires a deferred tax liability be established for the U.S. tax impact of undistributed earnings of foreign subsidiaries unless it can be shown that these earnings will be permanently reinvested outside the U.S. Deferred income taxes have not been provided on $502.2 million of undistributed earnings of certain foreign subsidiaries as such amounts are considered permanently reinvested. The remittance of these undistributed earnings may subject us to U.S. income taxes and certain foreign withholding taxes at the time of remittance, however, the determination of the amount of unrecognized deferred tax liability relating to the remittance of undistributed earnings is not practicable.

In accordance with the accounting guidance for income taxes,we estimate whether recoverability of our deferred tax assets is “more likely than not,” based on forecasts of taxable income in the related tax jurisdictions.  In this estimate, we use historical results, projected future operating results based upon approved business plans, eligible carry forward periods, tax planning opportunities and other relevant considerations.  

As described above, in 2012, we released the valuation allowance against our net federal deferred tax assets for entities in the United States, resulting in a $337.5 million benefit in our 2012 provision for income taxes. As of December 31, 2014 and December 31, 2013, we have a valuation allowance of $156.9 million and $163.7 million, respectively, related to net deferred tax assets in several foreign jurisdictions and U.S. state and local jurisdictions.

UNRECOGNIZED INCOME TAX BENEFITS To the extent our uncertain tax positions do not meet the “more likely than not” threshold, we have derecognized such positions. To the extent our uncertain tax positions meet the “more likely than not” threshold, we have measured and recorded the highest probable benefit, and have established appropriate reserves for benefits that exceed the amount likely to be sustained upon examination.

A reconciliation of the beginning and ending amounts of unrecognized income tax benefits is as follows:

	Unrecognized Income Tax			Interest and
	Benefits			Penalties
	(in millions)
Balance at January 1, 2012	$	25.8		$	7.4
Increase in prior year tax positions	—			2.8
Decrease in prior year tax positions	(1.1		)	—
Increase in current year tax positions	0.4			—
Settlement	(4.4		)	—
Balance at December 31, 2012	$	20.7		$	10.2
Increase in prior year tax positions	6.1			0.1
Decrease in prior year tax positions	(4.4		)	(6.2		)
Increase in current year tax positions	4.0			—
Settlement	(4.7		)	—
Balance at December 31, 2013	$	21.7		$	4.1
Increase in prior year tax positions	10.5			8.1
Decrease in prior year tax positions	(0.5		)	—
Increase in current year tax positions	15.6			—
Balance at December 31, 2014	$	47.3		$	12.2

At December 31, 2014 and December 31, 2013, we had $47.3 million and $21.7 million of net unrecognized income tax benefits, respectively. Changes to prior and current year tax positions for the year ended December 31, 2014 relate primarily to transfer pricing, income tax credits and the effect of changes in exchange rates.

In 2014, 2013, and 2012, we recognized expense of $8.1 million, benefit of $6.1 million and expense of $2.8 million, respectively, related to interest and penalties in income tax expense on our Consolidated Statement of Income. We have a liability of $12.2 million and $4.1 million related to the estimated future payment of interest and penalties at December 31, 2014 and 2013, respectively.

We file income tax returns in the U.S. federal jurisdiction, as well as various states and foreign jurisdictions. The Internal Revenue Service (IRS) commenced an examination of our U.S. income tax returns for 2010 and 2011 in 2013. The Mexican tax authorities commenced a transfer pricing examination of our income tax return for 2008 in 2013 and continue with its transfer pricing examination of our 2007 income tax return. In 2014, the India Tax Authorities commenced a transfer pricing examination for the 2010/2011 tax year. We are no longer subject to U.S. federal, state and local, or non-U.S. income tax examinations by tax authorities for years before 2007. At this time, we are not aware of any examinations underway in any other foreign jurisdictions.

The U.S. federal income tax examination for the years 2008 and 2009 and the Mexico transfer pricing examination for the year 2006 were settled in 2013. These settlements resulted in a reduction of a portion of our liability for unrecognized income tax benefits and a cash payment of $4.7 million in 2013.

Based on the status of the IRS audits and audits outside the U.S., and the protocol of finalizing audits by the relevant tax authorities, it is not possible to estimate the impact of changes, if any, to previously recorded uncertain tax positions. Although it is not possible to predict the timing of the conclusion of all ongoing audits with certainty, we anticipate that the current U.S. IRS audit will be completed during 2015. It is also possible that the current 2007 and 2008 audits with the Mexican tax authorities will be completed before the end of 2016. Although it is difficult to estimate with certainty the amount of an audit settlement for the years currently under audit, we do not expect any settlements will be materially different from what we have recorded in unrecognized tax benefits. We will continue to monitor the progress and conclusions of all ongoing audits and will adjust our estimated liability as necessary.

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Employee Benefit Plans Change in Benefit Obligation and Plan Assets (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2012	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Settlements		$ 131.1
Fair value of plan assets at beginning of year		713.4
Fair value of plan assets at end of year		643.7
Pension Contributions in Excess of Statutory Minimums	114.7
Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Increase (decrease) in projected benefit obligation due to change in mortality assumptions		25.2
Service cost		3.5	3.4	3.1
Interest cost		36.1	33.8	35.1
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements		35.5	0	0
Other Postretirement Benefit Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Increase (decrease) in projected benefit obligation due to change in mortality assumptions		19.0
Service cost		0.3	0.4	0.4
Interest cost		15.3	13.2	15.1
Settlements				(4.7)
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements		0	0	(5.2)
Change in Benefit Obligation [Member] | Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Benefit obligation at end of year		738.8	755.4	842.8
Service cost		3.5	3.4
Interest cost		36.1	33.8
Plan amendments		0	0
Actuarial loss (gain)		119.3	(92.6)
Change in GM Portion of OPEB Obligation		0	0
Participant contributions		0.4	0.4
Settlements		131.1	0
Benefit payments		(36.5)	(35.3)
Currency fluctuations		(8.3)	2.9
Defined Benefit Plan, Benefit Obligation, Period Increase (Decrease)		(16.6)	(87.4)
Benefit payments		(36.5)	(35.3)
Change in Benefit Obligation [Member] | Other Postretirement Benefit Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Benefit obligation at end of year		654.7	577.9	601.3
Service cost		0.3	0.4
Interest cost		15.3	13.2
Plan amendments		0	(8.1)
Actuarial loss (gain)		41.2	(0.7)
Change in GM Portion of OPEB Obligation		31.8	(17.0)
Participant contributions		0	0
Settlements		0	0
Benefit payments		(11.8)	(11.2)
Currency fluctuations		0	0
Defined Benefit Plan, Benefit Obligation, Period Increase (Decrease)		76.8	(23.4)
Benefit payments		(11.8)	(11.2)
Change in Plan Assets [Member] | Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Participant contributions		0.4	0.4
Benefit payments		(36.5)	(35.3)
Fair value of plan assets at beginning of year		713.4	695.4
Actual return on plan assets		77.2	49.2
Employer contributions		1.9	0.8
Benefit payments		(36.5)	(35.3)
Defined Benefit Plan, Settlements, Plan Assets		(104.2)	0
Currency fluctuations		(8.5)	2.9
Net change		(69.7)	18.0
Fair value of plan assets at end of year		643.7	713.4
Change in Plan Assets [Member] | Other Postretirement Benefit Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Participant contributions		0	0
Benefit payments		(11.8)	(11.2)
Fair value of plan assets at beginning of year		0	0
Actual return on plan assets		0	0
Employer contributions		11.8	11.2
Benefit payments		(11.8)	(11.2)
Defined Benefit Plan, Settlements, Plan Assets		0	0
Currency fluctuations		0	0
Net change		0	0
Fair value of plan assets at end of year		$ 0	$ 0

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Employee Benefit Plans

12 Months Ended

Dec. 31, 2014

Employee Benefit Plans [Abstract]

Compensation and Employee Benefit Plans [Text Block]

5. EMPLOYEE BENEFIT PLANS

PENSION AND OTHER POSTRETIREMENT DEFINED BENEFIT PLANS We sponsor various qualified and non-qualified defined benefit pension plans for our eligible associates. We also maintain hourly and salaried benefit plans that provide postretirement medical, dental, vision and life insurance benefits (OPEB) to our eligible retirees and their dependents in the U.S.

AAM and GM share proportionally in the cost of OPEB for eligible retirees based on the length of service an employee had with AAM and GM.  We have included in our OPEB obligation the amounts expected to be received pursuant to this agreement of $287.8 million and $255.9 million at December 31, 2014 and December 31, 2013, respectively. We have also recorded a corresponding asset for these amounts on our Consolidated Balance Sheet, $13.3 million that is classified as a current asset and $274.5 million that is classified as a noncurrent asset as of December 31, 2014.

Actuarial valuations of our benefit plans were made as of December 31, 2014 and 2013. The principal weighted-average assumptions used in the year-end valuation of our U.S. and U.K. plans appear in the following table. The U.S. discount rates are based on an actuarial review of a hypothetical portfolio of long-term, high quality corporate bonds matched against the expected payment stream for each of our plans. The U.K. discount rate is based on a review of long-term bonds, in consideration of the average duration of plan liabilities. The assumptions for expected return on plan assets are based on future capital market expectations for the asset classes represented within our portfolios and a review of long-term historical returns. The rates of increase in compensation and health care costs are based on current market conditions, inflationary expectations and historical information.

	Pension Benefits												OPEB
	2014				2013				2012				2014		2013		2012
	U.S.		U.K		U.S.		U.K		U.S.		U.K.
Discount rate	4.10	%	3.70	%	5.00	%	4.50	%	4.10	%	4.30	%	4.15	%	4.95	%	4.05	%
Expected return on plan assets	7.50	%	5.00	%	7.50	%	5.15	%	7.50	%	4.35	%	N/A		N/A		N/A
Rate of compensation increase	4.00	%	3.30	%	4.00	%	3.60	%	4.00	%	3.15	%	4.00	%	4.00	%	4.00	%

The accumulated benefit obligation for all defined benefit pension plans was $723.9 million and $744.5 million at December 31, 2014 and December 31, 2013, respectively. As of December 31, 2014, the accumulated benefit obligation for our underfunded defined benefit pension plans was $586.5 million, the projected benefit obligation was $598.3 million and the fair value of assets for these plans was $496.3 million. The following table summarizes the changes in projected benefit obligations and plan assets and reconciles the funded status of the benefit plans, which is the net benefit plan liability:

	Pension Benefits						OPEB
	December 31,						December 31,
	2014			2013			2014			2013
	(in millions)						(in millions)
Change in benefit obligation
Benefit obligation at beginning of year	$	755.4		$	842.8		$	577.9		$	601.3
Service cost	3.5			3.4			0.3			0.4
Interest cost	36.1			33.8			15.3			13.2
Plan amendments	—			—			—			(8.1		)
Actuarial loss (gain)	119.3			(92.6		)	41.2			(0.7		)
Change in GM portion of OPEB obligation	—			—			31.8			(17.0		)
Participant contributions	0.4			0.4			—			—
Settlements	(131.1		)	—			—			—
Benefit payments	(36.5		)	(35.3		)	(11.8		)	(11.2		)
Currency fluctuations	(8.3		)	2.9			—			—
Net change	(16.6		)	(87.4		)	76.8			(23.4		)
Benefit obligation at end of year	$	738.8		$	755.4		$	654.7		$	577.9
Change in plan assets
Fair value of plan assets at beginning of year	$	713.4		$	695.4		$	—		$	—
Actual return on plan assets	77.2			49.2			—			—
Employer contributions	1.9			0.8			11.8			11.2
Participant contributions	0.4			0.4			—			—
Benefit payments	(36.5		)	(35.3		)	(11.8		)	(11.2		)
Settlements	(104.2		)	—			—			—
Currency fluctuations	(8.5		)	2.9			—			—
Net change	(69.7		)	18.0			—			—
Fair value of plan assets at end of year	$	643.7		$	713.4		$	—		$	—

During 2014, the society of actuaries issued updated mortality tables for our U.S. benefit plans. These new mortality tables increased our projected benefit obligations for our U.S. pension and OPEB plans by $25.2 million and $19.0 million, respectively.

Amounts recognized in our balance sheets are as follows:

	Pension Benefits						OPEB
	December 31,						December 31,
	2014			2013			2014			2013
	(in millions)						(in millions)
Noncurrent assets	$	6.9		$	9.3		$	—		$	—
Current liabilities	(3.0		)	(2.3		)	(29.6		)	(30.8		)
Noncurrent liabilities	(99.0		)	(49.0		)	(625.1		)	(547.1		)
Net liability	$	(95.1	)	$	(42.0	)	$	(654.7	)	$	(577.9	)

Pre-tax amounts recorded in accumulated other comprehensive income (loss) (AOCI), not yet recognized in net periodic benefit cost as of December 31, 2014 and 2013, consists of:

	Pension Benefits						OPEB
	December 31,						December 31,
	2014			2013			2014			2013
	(in millions)						(in millions)
Net actuarial gain (loss)	$	(215.3	)	$	(194.3	)	$	(35.7	)	$	4.9
Net prior service credit	0.7			0.8			15.4			18.1
Total amounts recorded	$	(214.6	)	$	(193.5	)	$	(20.3	)	$	23.0

The components of net periodic benefit cost are as follows:

	Pension Benefits									OPEB
	2014			2013			2012			2014			2013			2012
	(in millions)									(in millions)
Service cost	$	3.5		$	3.4		$	3.1		$	0.3		$	0.4		$	0.4
Interest cost	36.1			33.8			35.1			15.3			13.2			15.1
Expected asset return	(48.4		)	(45.8		)	(34.7		)	—			—			—
Amortized actuarial loss	5.4			8.9			7.8			0.5			0.9			0.6
Amortized prior service cost (credit)	(0.1		)	5.4			0.5			(2.7		)	(1.8		)	(2.0		)
Special and contractual
termination benefits	—			—			12.8			—			—			16.2
Curtailment gain	—			—			—			—			—			(21.8		)
Settlement charge (gain)	35.5			—			—			—			—			(5.2		)
Net periodic benefit cost	$	32.0		$	5.7		$	24.6		$	13.4		$	12.7		$	3.3

Our postretirement cost sharing asset from GM is measured on the same basis as the portion of the obligation to which it relates. The actuarial gains and losses related to the GM portion of the OPEB obligation are recognized immediately in the Consolidated Statement of Income as an offset against the gains and losses related to the change in the corresponding GM postretirement cost sharing asset. These items are presented net in the change in benefit obligation and net periodic benefit cost components disclosed above. Remaining actuarial gains and losses are deferred and amortized over the expected future service periods of the active participants.

The estimated net actuarial loss and prior service credit for the defined benefit pension plans that is expected to be amortized from AOCI into net periodic benefit cost in 2015 are $6.9 million and $0.1 million, respectively. The estimated net actuarial loss and prior service credit for the other defined benefit postretirement plans that is expected to be amortized from AOCI into net periodic benefit cost in 2015 are $0.7 million and $2.7 million, respectively.

Formeasurement purposes, a weighted average annual increase in the per-capita cost of covered health care benefits of 7.0% was assumed for 2015. The rate was assumed to decrease gradually to 5.0% by 2023 and to remain at that level thereafter. Health care cost trend rates have a significant effect on the amounts reported for the health care plans. A 1.0% increase in the assumed health care cost trend rate would have increased total service and interest cost in 2014 and the postretirement obligation, net of GM cost sharing, at December 31, 2014 by $1.6 million and $41.3 million, respectively. A 1.0% decrease in the assumed health care cost trend rate would have decreased total service and interest cost in 2014 and the postretirement obligation, net of GM cost sharing, at December 31, 2014 by $1.3 million and $34.1 million, respectively.

The expected future pension and other postretirement benefits to be paid, net of GM cost sharing, for each of the next five years and in the aggregate for the succeeding five years thereafter are as follows: $55.3 million in 2015; $55.4 million in 2016; $56.4 million in 2017; $56.6 million in 2018; $56.9 million in 2019 and $293.6 million for 2020 through 2024. These amounts were estimated using the same assumptions that were used to measure our 2014 year-end pension and OPEB obligations and include an estimate of future employee service.

Contributions In 2012, AAM and the Pension Benefit Guaranty Corporation entered into an agreement regarding any liability that may have arisen under the Employee Retirement Income Security Act of 1974 in connection with the closures of DMC and CKMF. As part of this agreement, in 2012, we contributed $114.7 million in excess of our statutory minimum to our U.S. hourly pension plan.

Due to our significant pension contributions made in 2012, we do not expect to make any cash payments in 2015 to satisfy our regulatory funding requirements. We expect our cash outlay, net of GM cost sharing, for OPEB to be approximately $16 million in 2015.

Labor relations In 2012, we recorded a gain of $21.8 million in cost of goods sold for the curtailment of certain OPEB. This resulted primarily from the reduction in expected future OPEB related to the DMC and CKMF hourly associates who have terminated employment from AAM as a result of our plant closures. These curtailment gains resulted in an increase in our accumulated other comprehensive loss of $21.8 million pre-tax.

Also in 2012, we notified hourly associates of the termination of a benefit plan, which provided legal services to certain eligible hourly associates represented by the International UAW. As a result of terminating this plan, we recorded a settlement gain of $5.2 million in cost of goods sold in 2012. Recognition of this settlement gain reduced postretirement benefits and other long-term liabilities by $4.7 million and also reduced our accumulated other comprehensive loss by $0.5 million pre-tax.

Terminated vested lump sum payout offer On September 22, 2014, we announced a plan to offer a voluntary one-time lump sum payment option to certain eligible terminated vested participants in our U.S. pension plans that, if accepted, would settle our pension obligations to them (“AAM Pension Payout Offer”). The lump sum settlements, which were paid from plan assets, reduced our liabilities and administrative costs going forward.

The AAM Pension Payout Offer was open from October 2, 2014 through November 12, 2014 to approximately 6,000 of our 14,000 total U.S. pension plan participants. In addition to the lump sum payment option, the AAM Pension Payout Offer allowed participants to commence payment of their monthly benefits early.

In total, 3,335 participants accepted the offer and we made a one-time lump sum payment from our pension trust of $104.2 million on December 19, 2014. As a result of this settlement, we remeasured the assets and liabilities of our U.S. pension plans, which reduced our projected benefit obligation by $131.1 million and resulted in a non-cash charge of $35.5 million in the fourth quarter of 2014 related to the accelerated recognition of certain deferred losses.

Amendments to pension and OPEB plans and contractual termination benefits In the third quarter of 2013, we remeasured the AAM Supplemental Executive Retirement Plan (SERP) due to the passing of our Co-Founder and former Executive Chairman of the Board of Directors. As a result of this remeasurement, we recorded $4.7 million in selling, general and administrative expense related to the acceleration of prior service cost.

As a result of our election to apply the provisions of Moving Ahead for Progress in the 21st Century Act (MAP-21), in addition to certain actions we took in 2012, we agreed to provide pension and postretirement benefits to certain eligible UAW associates whose employment had been terminated in connection with the DMC and CKMF plant closures. In 2012, we recorded $28.7 million in cost of goods sold, for these pension and postretirement benefits. These incremental pension and postretirement benefits were also agreed to in connection with the lawsuit filed by the International UAW against AAM. See Note 9 - Commitments and Contingencies for more detail on this lawsuit.

Pension plan assets The weighted-average asset allocations of our pension plan assets at December 31, 2014 and 2013 appear in the following table. The asset allocation for our plans is developed in consideration of the demographics of the plan participants and expected payment stream of the benefit obligation.

	U.S.					U.K.
					Target					Target
	2014		2013		Allocation	2014		2013		Allocation
Equity securities	33.1	%	42.5	%	30% - 65%	28.7	%	30.7	%	25% - 35%
Fixed income securities	47.3		48.5		35% - 55%	61.1		59.0		55% - 65%
Hedge funds	18.3		8.8		0% - 20%	10.1		10.2		5% - 15%
Cash	1.3		0.2		0% - 5%	0.1		0.1		0% - 5%
Total	100.0	%	100.0	%		100.0	%	100.0	%

The primary objective of our pension plan assets is to provide a source of retirement income for participants and beneficiaries. Our primary financial objectives for the pension plan assets have been established in conjunction with a comprehensive review of our current and projected financial requirements. These objectives include having the ability to pay all future benefits and expenses when due, maintaining flexibility and minimizing volatility. These objectives are based on a long-term investment horizon.

Postretirement Benefit Plan AssetsInvestments in our defined benefit plans are stated at fair value. Level 1 assets are valued using quoted market prices that represent the asset value of the shares held by the trusts. The level 2 assets are investments in pooled funds, which are valued using a model to reflect the valuation of their underlying assets that are publicly traded with observable values. The fair value of our level 3 postretirement benefit plan assets are measured by compiling the portfolio holdings and independently valuing the securities in those portfolios. The fair values of our pension plan assets are as follows:

December 31, 2014
Asset Categories	Level 1		Level 2		Level 3		Total
	(in millions)
Cash & Cash Equivalents	$	6.7	$	—	$	—	$	6.7
Equity
U.S. Large Cap	87.3		—		—		87.3
U.S. Small/Mid Cap	25.2		—		—		25.2
World Equity	94.2		—		—		94.2
Fixed Income Securities
Government & Agencies	67.9		58.8		—		126.7
Corporate Bonds - Investment Grade	139.9		—		—		139.9
Corporate Bonds - Non-investment Grade	31.9		—		—		31.9
Emerging Market Debt	19.0		—		—		19.0
Other	7.2		—		—		7.2
Hedge Funds
Property Funds	—		—		48.3		48.3
Multi Strategy Hedge Fund	—		—		57.3		57.3
Total Plan Assets	$	479.3	$	58.8	$	105.6	$	643.7
December 31, 2013
Asset Categories	Level 1		Level 2		Level 3		Total
	(in millions)
Cash & Cash Equivalents	$	1.5	$	—	$	—	$	1.5
Equity
U.S. Large Cap	128.0		—		—		128.0
U.S. Small/Mid Cap	49.4		—		—		49.4
World Equity	109.3		—		—		109.3
Fixed Income Securities
Government & Agencies	70.5		63.0		—		133.5
Corporate Bonds - Investment Grade	167.1		—		—		167.1
Corporate Bonds - Non-investment Grade	25.8		—		—		25.8
Emerging Market Debt	17.4		—		—		17.4
Other	16.9		—		—		16.9
Hedge Funds
Property Funds	—		—		7.1		7.1
Multi Strategy Hedge Fund	—		—		57.4		57.4
Total Plan Assets	$	585.9	$	63.0	$	64.5	$	713.4

The changes in the fair value of our level 3 assets in the Property Funds and Multi Strategy Hedge Fund are as follows:

	December 31,
	2014		2013
	(in millions)
Beginning balance	$	64.5	$	47.6
Actual return on plan assets:
Relating to assets still held at the reporting date	3.3		3.5
Purchases, sales and settlements, net	37.8		13.4
Ending balance	$	105.6	$	64.5

DEFINED CONTRIBUTION PLANS Most of our salaried U.S. associates are eligible to participate in voluntary savings plans. Our maximum match is 50% of eligible salaried associates' contribution up to 10% of their eligible salary. Matching contributions amounted to $3.9 million in 2014, $3.9 million in 2013 and $3.3 million in 2012. U.S. salaried associates are eligible to receive an additional annual retirement contribution (ARC) benefit between 3% to 5% of eligible salary, depending on years of service. We made ARC contributions of $4.9 million, $4.6 million and $4.4 million in 2014, 2013 and 2012, respectively.

Certain UAW represented associates at our original U.S. locations are eligible for a Company match on associate contributions made to the voluntary savings plans. Our maximum match is 25% of hourly associates' contribution up to the first 6% of their contributions. Matching contributions amounted to $0.1 million in 2014, 2013 and 2012. Certain UAW represented associates are also eligible to receive an ARC benefit of 5% of eligible wages, which also began in 2009. We made ARC contributions of $2.6 million in 2014, $1.9 million in 2013 and $1.6 million in 2012 related to these associates.

DEFERRED COMPENSATION PLAN Certain U.S. associates are eligible to participate in a non-qualified deferred compensation plan. Payments of $1.2 million, $6.1 million and $0.8 million have been made in 2014, 2013 and 2012, respectively, to eligible associates that have elected distributions. Included in these payments, in 2013, was a distribution of $5.6 million to the beneficiary of the plan upon the passing of our Co-Founder and former Executive Chairman of the Board of Directors. This payment resulted in a $5.6 million reduction in postretirement benefits and other long-term liabilities on our Consolidated Balance Sheet and was partially offset by proceeds of $5.0 million, which AAM received as the beneficiary of a key man life insurance policy in 2013.

At December 31, 2014 and 2013, our deferred compensation liability was $5.6 million and $6.2 million, respectively. Due to the changes in the value of this deferred compensation plan we increased our liability by $0.3 million, $0.8 million and $1.3 million in 2014, 2013 and 2012, respectively.

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Stock Based Compensation

12 Months Ended

Dec. 31, 2014

Stock-based Compensation [Abstract]

Disclosure of Compensation Related Costs, Share-based Payments [Text Block]

6. STOCK-BASED COMPENSATION

At December 31, 2014, we had grants outstanding under stock incentive compensation plans approved by our stockholders. Under these plans, a total of 18.5 million shares have been authorized for issuance to our directors, officers and certain other associates in the form of options, unvested restricted stock or other awards that are based on the value of our common stock. Shares available for future grants at December 31, 2014 were 2.2 million. The current stock plan will expire in April 2022.

STOCK OPTIONS Under the terms of the plans, stock options are granted at the market price of the stock on the grant date. The contractual term of outstanding stock options is 10 years. We issue new shares to satisfy stock-based awards.

Stock option awards become exercisable in three approximately equal annual installments beginning one year from the date of grant.

The following table summarizes activity relating to our stock options:

			Weighted-
	Number of		Average Exercise
	Shares		Price Per Share
	(in millions, except per share data)
Outstanding at January 1, 2012	3.9		$	26.95
Options granted	0.2		9.19
Options exercised	(0.1	)	2.81
Options canceled	(1.0	)	25.12
Outstanding at December 31, 2012	3.0		$	27.08
Options granted	—		—
Options exercised	(0.1	)	10.59
Options canceled	(0.9	)	24.28
Outstanding at December 31, 2013	2.0		$	29.22
Options granted	—		—
Options exercised	(0.1	)	13.87
Options canceled	(1.0	)	37.70
Outstanding at December 31, 2014	0.9		$	20.66
Exercisable at December 31, 2012	2.8		$	28.02
Exercisable at December 31, 2013	2.0		$	29.22
Exercisable at December 31, 2014	0.9		$	20.66

As of December 31, 2014, there were no unvested stock options. The total intrinsic value of options outstanding and exercisable as of December 31, 2014 was $3.4 million. The total intrinsic value of stock options exercised was $0.5 million in 2014, $0.8 million in 2013 and $0.5 million in 2012.

The following is a summary of the range of exercise prices for stock options that are outstanding and exercisable at December 31, 2014:

		Weighted-				Weighted-
Range of	Stock Options	Average Exercise		Weighted-Average	Stock Options	Average Exercise
Exercise Prices	Outstanding	Price Per Share		Contractual Life	Exercisable	Price Per Share
	(in millions, except per share data)			(in years)	(in millions, except per share data)
$9.19 - $15.58	0.4	$	13.22	3.2	0.4	$	13.22
$19.54 - $26.65	0.5	26.05		1.2	0.5	26.05
	0.9	$	20.66	2.0	0.9	$	20.66

OTHER STOCK-BASED COMPENSATION We awarded performance accelerated restricted stock, restricted stock and restricted stock units (PARS, RS and RSUs, respectively). The total amount of compensation expense associated with the RSUs settled in cash is recorded as an accrued liability when incurred while the total amount of compensation expense associated with PARS, RS and RSUs settled in stock is recorded to paid-in-capital. The PARS and RSUs vest over three years contingent upon the satisfaction of future financial performance targets specified by the plan and the RS vests over three years. The unearned compensation is expensed over the expected vesting period.

The following table summarizes activity relating to our PARS, RS and RSUs:

			Weighted Average
	Number of		Grant Date Fair
	Shares/Units		Value per Share/Unit
	(in millions, except per share data)
Outstanding at January 1, 2012	1.6		$	10.74
Granted	1.0		10.31
Vested	(1.4	)	10.19
Canceled	(0.1	)	26.02
Outstanding at December 31, 2012	1.1		$	11.08
Granted	0.9		12.79
Vested	(0.7	)	11.06
Canceled	—		—
Outstanding at December 31, 2013	1.3		$	12.24
Granted	0.5		19.58
Vested	(0.1	)	13.95
Canceled	(0.1	)	12.76
Outstanding at December 31, 2014	1.6		$	14.54

As of December 31, 2014, unrecognized compensation cost related to unvested RSUs totaled $10.4 million. The weighted average period over which this cost is expected to be recognized is approximately one year. In 2014 and 2013, the total fair market value of RS and RSUs vested was $1.7 million and $13.8 million, respectively.

We made cash payments of $0.2 million related to vested RSUs in 2012.

PERFORMANCE SHARES As of December 31, 2014, we have performance shares (PS) outstanding under our 2012 Omnibus Incentive Plan. We granted performance shares payable in stock to officers which vest in full over a three-year performance period. The payout of these stock-based awards is based equally on a total shareholder return (TSR) measure and AAM's three-year earnings before interest, taxes and depreciation and amortization margin (EBITDA). The TSR metric compares our TSR over the three-year performance period relative to the TSR of our pre-defined competitor peer group. Share price appreciation and dividends paid are measured over the performance period to determine TSR. As these awards are settled in stock, the compensation expense booked ratably over the vesting period is recorded to paid-in-capital.

The following table summarizes activity relating to our performance shares:

		Weighted Average
	Number of	Grant Date Fair
	Shares	Value per Share
EBITDA	(in millions, except per share data)
Outstanding at January 1, 2014	—	$	—
Granted	0.2	27.66
Vested	—	—
Canceled	—	—
Outstanding at December 31, 2014	0.2	$	27.66
TSR
Outstanding at January 1, 2014	—	$	—
Granted	0.2	21.11
Vested	—	—
Canceled	—	—
Outstanding at December 31, 2014	0.2	$	21.11

We estimated the fair value of our performance shares related to EBITDA on the date of grant using our estimated three-year EBITDA margin, based on AAM's budget and long-range plan assumptions at that time. We estimated the fair value of our performance shares related to TSR on the date of grant using the Monte Carlo simulation approach. The Monte Carlo simulation approach utilizes inputs on volatility assumptions, risk free rates, the price of the Company’s and our competitor peer group's common stock and their correlation as of each valuation date. Volatility assumptions are based on historical and implied volatility measurements.

Based on the current fair value, the estimated unrecognized compensation cost related to unvested PS totaled $5.3 million, as of December 31, 2014. The weighted average period over which this cost is expected to be recognized is approximately two years.

PERFORMANCE AWARDS As of December 31, 2014, we have performance awards outstanding under our 2012 Omnibus Incentive Plan, which are fully vested. We granted performance awards payable in cash to our officers and executives which vest in full over a three year performance period. The payout of these awards is based on a TSR measure that compares our TSR over the three-year performance period relative to the TSR of our pre-defined competitor peer group. Share price appreciation and dividends paid is measured over the performance period to determine TSR.

According to the applicable accounting guidance, these awards are considered to be stock-based compensation because the final payout amount is based “at least in part” on the price of our shares. However, as these awards are settled in cash, they are determined to be liability awards and have been remeasured at the end of each reporting period until settlement. The fair value of the performance awards was calculated on a quarterly basis using the Monte Carlo simulation approach, described above, and the liability was adjusted accordingly based on changes to the fair value and the percentage of time vested.

We recognized compensation expense associated with the performance awards of approximately $1.4 million in 2014, $7.9 million in 2013 and $3.0 million in 2012. We have a liability of $3.7 million recorded as of December 31, 2014, which will be paid out in the first quarter of 2015. As of December 31, 2014, there is no unrecognized compensation cost related to the performance awards.

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Earnings (Loss) Per Share (EPS)

12 Months Ended

Dec. 31, 2014

Earnings (Loss) per Share (EPS) [Abstract]

Earnings Per Share [Text Block]

8. EARNINGS PER SHARE (EPS)

We present earnings per share (EPS) using the two-class method. This method allocates undistributed earnings between common shares and non-vested share based payment awards that entitle the holder to nonforfeitable dividend rights. Our participating securities include non-vested restricted stock units.

The following table sets forth the computation of our basic and diluted EPS available to shareholders of common stock (excluding participating securities):

	2014			2013			2012
	(in millions, except per share data)
Numerator
Net income attributable to AAM	$	143.0		$	94.5		$	367.7
Less: Net income attributable to participating securities	(2.9		)	(1.9		)	(2.6		)
Net income attributable to common shareholders - Basic	$	140.1		$	92.6		$	365.1
Undistributed earnings reallocated to common shareholders under two step dilutive method	—			—			—
Net income attributable to common shareholders - Dilutive	$	140.1		$	92.6		$	365.1
Denominators
Basic common shares outstanding -
Weighted-average shares outstanding	77.3			76.7			75.3
Less: Participating securities	(1.6		)	(1.5		)	(0.5		)
Weighted-average common shares outstanding	75.7			75.2			74.8
Effect of dilutive securities -
Dilutive stock-based compensation	0.2			0.1			0.1
Diluted shares outstanding -
Adjusted weighted-average shares after assumed conversions	75.9			75.3			74.9
Basic EPS	$	1.85		$	1.23		$	4.88
Diluted EPS	$	1.85		$	1.23		$	4.87

Certain exercisable stock options were excluded in the computations of diluted EPS because the exercise price of these options was greater than the average annual market prices of our stock. The number of stock options outstanding excluded from the calculation of diluted EPS was 0.5 million at year-end 2014, 2.0 million at year-end 2013 and 3.3 million at year-end 2012. The ranges of exercise prices related to these stock options were $19.54 - $26.65 at year-end 2014, $19.54 - $40.83 at year-end 2013 and $15.58 - $40.83 at year-end 2012.

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Employee Benefit Plans Pension Plan Assets by Category (Details)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
United States Pension Plan of US Entity [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual Plan Asset Allocations	100.00%	100.00%
United States Pension Plan of US Entity [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	30% - 65%
Actual Plan Asset Allocations	33.10%	42.50%
United States Pension Plan of US Entity [Member] | Fixed Income Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	35% - 55%
Actual Plan Asset Allocations	47.30%	48.50%
United States Pension Plan of US Entity [Member] | Hedge Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	0% - 20%
Actual Plan Asset Allocations	18.30%	8.80%
United States Pension Plan of US Entity [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	0% - 5%
Actual Plan Asset Allocations	1.30%	0.20%
Foreign Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual Plan Asset Allocations	100.00%	100.00%
Foreign Pension Plan [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	25% - 35%
Actual Plan Asset Allocations	28.70%	30.70%
Foreign Pension Plan [Member] | Fixed Income Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	55% - 65%
Actual Plan Asset Allocations	61.10%	59.00%
Foreign Pension Plan [Member] | Hedge Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	5% - 15%
Actual Plan Asset Allocations	10.10%	10.20%
Foreign Pension Plan [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	0% - 5%
Actual Plan Asset Allocations	0.10%	0.10%

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Income Taxes Deferred Income Tax Assets and Liabilities and Valuation Allowances (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2012	Dec. 31, 2013
Tax Credit Carryforward [Line Items]
Deferred Tax Assets, Operating Loss and Tax Credit Carryforwards	$ 188.9		$ 275.8
Deferred Tax Assets, Operating Loss and Tax Credit Carryforwards, Not Subject to Expiration	85.6
NOL and Tax Credit Carryforward, Range of Carryforward Period, Lower End of Range	5 years
NOL and Tax Credit Carryforward, Range of Carryforward Period, Upper End of Range	20 years
Undistributed Earnings of Foreign Subsidiaries	502.2
Release of Valuation Allowance on Net Federal Deferred Tax Assets in the U.S.		337.5
Deferred Tax Assets, Valuation Allowance	156.9		163.7
difference relating to amount of tax deduction allowed versus US GAAP for stock based compensation [Member]
Tax Credit Carryforward [Line Items]
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Compensation	$ 3.2

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Employee Benefit Plans Change in Fair Value of Level 3 OPEB Assets (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plan Disclosure [Line Items]
Fair value, measurement with unobservable inputs reconciliation, recurring basis, asset value	$ 105.6	$ 64.5	$ 47.6
Defined Benefit Plan, Actual Return on Plan Assets [Abstract]
Relating to assets still held at the reporting date	3.3	3.5
Purchases, sales and settlements, net	$ 37.8	$ 13.4

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Employee Benefit Plans Components of Net Periodic Benefit Cost (Credit) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Special and contractual termination benefits					$ 28.7
Defined benefit plan, acceleration of prior service cost due to remeasurement				4.7
Pension and OPEB, period expense, other				28.7
Defined benefit plan, health care cost trend rate assumed for next fiscal year		7.00%
Defined benefit plan, ultimate health care cost trend rate	5.00%
Defined benefit plan, year that rate reaches ultimate trend rate	2023
Defined benefit plan, effect of one percentage point increase on service and interest cost components			1.6
Defined benefit plan, effect of one percentage point decrease on service and interest cost components			1.3
Defined benefit plan, effect of one percentage point decrease on accumulated postretirement benefit obligation			34.1
Defined benefit plan, effect of one percentage point increase on accumulated postretirement benefit obligation			41.3
Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost			3.5	3.4	3.1
Interest cost			36.1	33.8	35.1
Expected asset return			(48.4)	(45.8)	(34.7)
Amortized actuarial loss			5.4	8.9	7.8
Amortized prior service cost (credit)			(0.1)	5.4	0.5
Special and contractual termination benefits			0	0	12.8
Curtailment gain			0	0	0
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements			35.5	0	0
Net periodic benefit cost			32.0	5.7	24.6
Defined benefit plan, amortization of net gains (losses)		6.9
Defined benefit plan, amortization of net prior service cost (credit)		0.1
Other Postretirement Benefit Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost			0.3	0.4	0.4
Interest cost			15.3	13.2	15.1
Expected asset return			0	0	0
Amortized actuarial loss			0.5	0.9	0.6
Amortized prior service cost (credit)			(2.7)	(1.8)	(2.0)
Special and contractual termination benefits			0	0	16.2
Curtailment gain			0	0	(21.8)
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements			0	0	(5.2)
Other postretirement benefit expense			13.4	12.7	3.3
Defined benefit plan, amortization of net gains (losses)		0.7
Defined benefit plan, amortization of net prior service cost (credit)		2.7

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Reclassifications out of Accumulated Other Comprehensive Income Reclassifications out of Accumulated Other Comprehensive Income Parenthetical (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, Tax	$ (13.4)	$ (4.6)
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, before Reclassification Adjustments, Tax	36.6	(36.7)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), Net of Tax	(25.4)	(8.9)
Cost of Sales [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), Net of Tax	(23.6)	(4.7)
Selling, General and Administrative Expenses [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), Net of Tax	(1.8)	(4.2)
Term vested lump sum buyout [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, Net of Tax	$ 23.1

XML

Segment and Geographic Information Segment and Geographic Information (Tables)

12 Months Ended

Dec. 31, 2014

Segment and Geographic Information [Abstract]

Schedule of Disclosure on Geographic Areas, Revenue and Long-Lived Assets by Country [Table Text Block]

	December 31,
	2014		2013		2012
	(in millions)
Net sales
United States	$	2,073.6	$	1,682.0	$	1,576.6
Canada	64.6		74.4		75.0
Mexico	1,055.5		865.6		755.1
South America	156.5		201.1		216.4
Asia	238.6		255.2		214.5
Europe and other	107.2		129.0		93.3
Total net sales	$	3,696.0	$	3,207.3	$	2,930.9
Long-lived assets
United States	$	885.9	$	850.0	$	865.3
Mexico	513.2		469.3		417.7
South America	80.5		100.2		113.3
Asia	177.3		176.7		159.0
Europe	94.0		93.2		72.5
Total long-lived assets	$	1,750.9	$	1,689.4	$	1,627.8

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Long-Term Debt Long-term Debt Maturity Schedule (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014
Debt Instrument [Line Items]
2015	$ 35.2
2016	17.1
2017	19.1
2018	109.2
2019	403.4
Thereafter	952.4
Debt	$ 1,536.4

XML

Supplemental Guarantor Condensed Consolidating Financial Statements

12 Months Ended

Dec. 31, 2014

Supplemental Guarantor Condensed Consolidating Financial Statements [Abstract]

Supplemental Guarantor Disclosure [Text Block]

13. SUPPLEMENTAL GUARANTOR CONDENSED CONSOLIDATING FINANCIAL STATEMENTS

Amounts have been revised for the effects of the error as discussed in Note 1 - Organization and Summary of Significant Accounting Policies.

Holdings has no significant assets other than its 100% ownership in AAM, Inc. and no direct subsidiaries other than AAM, Inc. The 7.75% Notes, 6.625% Notes, 6.25% Notes and 5.125% Notes are senior unsecured obligations of AAM Inc.; all of which are fully and unconditionally guaranteed by Holdings and substantially all domestic subsidiaries of AAM, Inc., which are 100% indirectly owned by Holdings.

These Condensed Consolidating Financial Statements are prepared under the equity method of accounting whereby the investments in subsidiaries are recorded at cost and adjusted for the parent's share of the subsidiaries' cumulative results of operations, capital contributions and distributions, and other equity changes.

Condensed Consolidating Statements of Income
2014	Holdings			AAM Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Elims			Consolidated
	(in millions)
Net sales
External	$	—		$	1,099.5		$	225.1		$	2,371.4		$	—		$	3,696.0
Intercompany	—			13.1			246.9			21.6			(281.6		)	—
Total net sales	—			1,112.6			472.0			2,393.0			(281.6		)	3,696.0
Cost of goods sold	—			1,112.4			396.1			1,946.3			(281.6		)	3,173.2
Gross profit	—			0.2			75.9			446.7			—			522.8
Selling, general and administrative expenses	—			194.0			0.2			61.0			—			255.2
Operating income (loss)	—			(193.8		)	75.7			385.7			—			267.6
Non-operating income (expense), net	—			(103.0		)	9.0			3.1			—			(90.9		)
Income (loss) before income taxes	—			(296.8		)	84.7			388.8			—			176.7
Income tax expense (benefit)	—			(11.8		)	0.9			44.6			—			33.7
Earnings (loss) from equity in subsidiaries	143.0			204.0			(23.3		)	—			(323.7		)	—
Net income (loss) before royalties and dividends	143.0			(81.0		)	60.5			344.2			(323.7		)	143.0
Royalties and dividends	—			224.0			—			(224.0		)	—			—
Net income after royalties and dividends	143.0			143.0			60.5			120.2			(323.7		)	143.0
Other comprehensive loss, net of tax	(80.7		)	(80.7		)	(23.5		)	(34.8		)	139.0			(80.7		)
Comprehensive income	$	62.3		$	62.3		$	37.0		$	85.4		$	(184.7	)	$	62.3

2013	Holdings			AAM Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Elims			Consolidated
Net sales
External	$	—		$	773.6		$	226.0		$	2,207.7		$	—		$	3,207.3
Intercompany	—			15.3			226.1			14.0			(255.4		)	—
Total net sales	—			788.9			452.1			2,221.7			(255.4		)	3,207.3
Cost of goods sold	—			769.4			389.0			1,825.6			(255.4		)	2,728.6
Gross profit	—			19.5			63.1			396.1			—			478.7
Selling, general and administrative expenses	—			182.4			0.1			55.9			—			238.4
Operating income (loss)	—			(162.9		)	63.0			340.2			—			240.3
Non-operating income (expense), net	—			(155.1		)	10.7			(9.6		)	—			(154.0		)
Income (loss) before income taxes	—			(318.0		)	73.7			330.6			—			86.3
Income tax expense (benefit)	—			(24.9		)	0.9			15.8			—			(8.2		)
Earnings (loss) from equity in subsidiaries	94.5			167.0			(21.7		)	—			(239.8		)	—
Net income (loss) before royalties and dividends	94.5			(126.1		)	51.1			314.8			(239.8		)	94.5
Royalties and dividends	—			220.6			—			(220.6		)	—			—
Net income after royalties and dividends	94.5			94.5			51.1			94.2			(239.8		)	94.5
Other comprehensive income (loss), net of tax	48.4			48.4			(7.2		)	(10.8		)	(30.4		)	48.4
Comprehensive income	$	142.9		$	142.9		$	43.9		$	83.4		$	(270.2	)	$	142.9
2012	Holdings			AAM Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Elims			Consolidated
Net sales
External	$	—		$	704.8		$	214.4		$	2,011.7		$	—		$	2,930.9
Intercompany	—			18.6			226.8			25.2			(270.6		)	—
Total net sales	—			723.4			441.2			2,036.9			(270.6		)	2,930.9
Cost of goods sold	—			709.8			389.8			1,702.2			(270.6		)	2,531.2
Gross profit	—			13.6			51.4			334.7			—			399.7
Selling, general and administrative expenses	—			186.5			—			56.8			—			243.3
Operating income (loss)	—			(172.9		)	51.4			277.9			—			156.4
Non-operating income (expense), net	—			(135.2		)	(2.2		)	12.5			—			(124.9		)
Income (loss) before income taxes	—			(308.1		)	49.2			290.4			—			31.5
Income tax expense (benefit)	—			(343.9		)	(5.5		)	14.2			—			(335.2		)
Earnings (loss) from equity in subsidiaries	367.7			79.0			(49.2		)	—			(397.5		)	—
Net income before royalties and dividends	367.7			114.8			5.5			276.2			(397.5		)	366.7
Royalties and dividends	—			252.9			—			(252.9		)	—			—
Net income after royalties and dividends	367.7			367.7			5.5			23.3			(397.5		)	366.7
Net loss attributable to noncontrolling interests	—			—			—			1.0			—			1.0
Net income attributable to AAM	$	367.7		$	367.7		$	5.5		$	24.3		$	(397.5	)	$	367.7
Other comprehensive loss, net of tax	(60.5		)	(60.5		)	(10.1		)	(3.6		)	74.2			(60.5		)
Foreign currency translation adjustments attributable to noncontrolling interests	0.3			0.3			—			0.3			(0.6		)	0.3
Comprehensive income (loss) attributable to AAM	$	306.9		$	306.9		$	(4.6	)	$	20.4		$	(322.7	)	$	306.9

Condensed Consolidating Balance Sheets
2014	Holdings		AAM Inc.		Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Elims			Consolidated
Assets	(in millions)
Current assets
Cash and cash equivalents	$	—	$	69.7	$	—	$	179.5	$	—		$	249.2
Accounts receivable, net	—		137.5		23.9		371.3		—			532.7
Intercompany receivables	—		231.0		174.1		10.0		(415.1		)	—
Inventories, net	—		64.9		32.3		151.6		—			248.8
Other current assets	—		53.6		2.6		52.6		—			108.8
Total current assets	—		556.7		232.9		765.0		(415.1		)	1,139.5
Property, plant and equipment, net	—		230.0		87.9		743.2		—			1,061.1
Goodwill	—		—		147.9		7.1		—			155.0
Intercompany notes and accounts receivable	—		509.4		219.1		—		(728.5		)	—
Other assets and deferred charges	—		736.6		45.7		121.3		—			903.6
Investment in subsidiaries	433.8		1,134.6		—		—		(1,568.4		)	—
Total assets	$	433.8	$	3,167.3	$	733.5	$	1,636.6	$	(2,712.0	)	$	3,259.2
Liabilities and stockholders' equity
Current liabilities
Current portion of long-term debt	$	—	$	9.4	$	—	$	3.6	$	—		$	13.0
Accounts payable	—		127.3		38.9		278.1		—			444.3
Intercompany payables	—		177.0		105.3		132.8		(415.1		)	—
Other current liabilities	—		121.0		4.4		104.5		—			229.9
Total current liabilities	—		434.7		148.6		519.0		(415.1		)	687.2
Intercompany notes and accounts payable	320.4		6.9		—		401.2		(728.5		)	—
Long-term debt	—		1,483.1		4.9		35.4		—			1,523.4
Investment in subsidiaries obligation	—		—		53.8		—		(53.8		)	—
Other long-term liabilities	—		808.8		0.6		125.8		—			935.2
Total liabilities	320.4		2,733.5		207.9		1,081.4		(1,197.4		)	3,145.8
Total stockholders' equity	113.4		433.8		525.6		555.2		(1,514.6		)	113.4
Total liabilities and stockholders' equity	$	433.8	$	3,167.3	$	733.5	$	1,636.6	$	(2,712.0	)	$	3,259.2
2013	Holdings		AAM Inc.		Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Elims			Consolidated
Assets
Current assets
Cash and cash equivalents	$	—	$	36.9	$	—	$	117.1	$	—		$	154.0
Accounts receivable, net	—		102.7		25.6		330.2		—			458.5
Intercompany receivables	—		180.5		116.6		9.2		(306.3		)	—
Inventories, net	—		62.4		34.2		165.2		—			261.8
Other current assets	—		43.8		3.2		75.0		—			122.0
Total current assets	—		426.3		179.6		696.7		(306.3		)	996.3
Property, plant and equipment, net	—		239.8		83.0		735.7		—			1,058.5
Goodwill	—		—		147.8		8.6		—			156.4
Intercompany notes and accounts receivable	—		327.0		201.5		—		(528.5		)	—
Other assets and deferred charges	—		671.7		44.8		99.8		—			816.3
Investment in subsidiaries	363.7		1,240.1		—		—		(1,603.8		)	—
Total assets	$	363.7	$	2,904.9	$	656.7	$	1,540.8	$	(2,438.6	)	$	3,027.5
Liabilities and stockholders' equity
Current liabilities
Accounts payable	$	—	$	106.2	$	44.5	$	286.7	$	—		$	437.4
Intercompany payables			117.4		98.6		90.3		(306.3		)	—
Other current liabilities	—		120.4		4.1		96.8		—			221.3
Total current liabilities	—		344.0		147.2		473.8		(306.3		)	658.7
Intercompany notes and accounts payable	323.2		3.7		—		201.6		(528.5		)	—
Long-term debt	—		1,500.0		5.3		53.8		—			1,559.1
Investment in subsidiaries obligation	—		—		15.2		—		(15.2		)	—
Other long-term liabilities	—		693.5		0.5		75.2		—			769.2
Total liabilities	323.2		2,541.2		168.2		804.4		(850.0		)	2,987.0
Total stockholders' equity	40.5		363.7		488.5		736.4		(1,588.6		)	40.5
Total liabilities and stockholders' equity	$	363.7	$	2,904.9	$	656.7	$	1,540.8	$	(2,438.6	)	$	3,027.5

Condensed Consolidating Statements of Cash Flows
2014	Holdings			AAM Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Elims			Consolidated
	(in millions)
Net cash provided by operating activities	$	—		$	83.4		$	41.9		$	193.1		$	—		$	318.4
Investing activities
Purchases of property, plant and equipment	—			(51.3		)	(18.6		)	(136.6		)	—			(206.5		)
Proceeds from sale of property, plant and equipment	—			7.9			0.4			0.8			—			9.1
Proceeds from government grants	—			—			—			2.1			—			2.1
Intercompany activity	—			—			(23.3		)	—			23.3			—
Proceeds from sale-leaseback of equipment	—			—			—			—			—			—
Net cash used in investing activities	—			(43.4		)	(41.5		)	(133.7		)	23.3			(195.3		)
Financing activities
Net debt activity	—			(7.8		)	(0.4		)	(13.8		)	—			(22.0		)
Debt issuance costs	—			(0.3		)	—			—			—			(0.3		)
Employee stock option exercises	—			1.2			—			—			—			1.2
Purchase of treasury stock	(0.3		)	—			—			—			—			(0.3		)
Intercompany activity	0.3			(0.3		)	—			23.3			(23.3		)	—
Net cash provided by (used in) financing activities	—			(7.2		)	(0.4		)	9.5			(23.3		)	(21.4		)
Effect of exchange rate changes on cash	—			—			—			(6.5		)	—			(6.5		)
Net increase in cash and cash equivalents	—			32.8			—			62.4			—			95.2
Cash and cash equivalents at beginning of period	—			36.9			—			117.1			—			154.0
Cash and cash equivalents at end of period	$	—		$	69.7		$	—		$	179.5		$	—		$	249.2
2013	Holdings			AAM Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Elims			Consolidated
Net cash provided by (used in) operating activities	$	—		$	(35.9	)	$	64.9		$	194.0		$	—		$	223.0
Investing activities
Purchases of property, plant and equipment	—			(61.2		)	(12.5		)	(178.2		)	—			(251.9		)
Proceeds from sale of property, plant and equipment	—			5.1			0.5			3.5			—			9.1
Proceeds from sale-leaseback of equipment	—			24.1			—			—			—			24.1
Intercompany activity	—			—			(52.6		)	—			52.6			—
Net cash used in investing activities	—			(32.0		)	(64.6		)	(174.7		)	52.6			(218.7		)
Financing activities
Net debt activity	—			110.1			(0.3		)	(5.0		)	—			104.8
Debt issuance costs	—			(16.6		)	—			(0.1		)	—			(16.7		)
Employee stock option exercises	—			1.1			—			—			—			1.1
Purchase of treasury stock	(0.4		)	—			—			—			—			(0.4		)
Intercompany activity	0.4			(0.4		)	—			52.6			(52.6		)	—
Net cash provided by (used in) financing activities	—			94.2			(0.3		)	47.5			(52.6		)	88.8
Effect of exchange rate changes on cash	—			—			—			(1.5		)	—			(1.5		)
Net increase in cash and cash equivalents	—			26.3			—			65.3			—			91.6
Cash and cash equivalents at beginning of period	—			10.6			—			51.8			—			62.4
Cash and cash equivalents at end of period	$	—		$	36.9		$	—		$	117.1		$	—		$	154.0

2012	Holdings			AAM Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Elims			Consolidated
Net cash provided by (used in) operating activities	$	—		$	(274.3	)	$	46.6		$	52.2		$	—		$	(175.5	)
Investing activities
Purchases of property, plant and equipment	—			(59.4		)	(9.0		)	(139.2		)	—			(207.6		)
Proceeds from sale of property, plant and equipment	—			7.0			—			3.1			—			10.1
Proceeds from sale-leaseback of equipment	—			12.1			—			—			—			12.1
Intercompany activity	—						(37.4		)				37.4			—
Net cash used in investing activities	—			(40.3		)	(46.4		)	(136.1		)	37.4			(185.4		)
Financing activities
Net debt activity	—			257.9			(0.2		)	16.2			—			273.9
Debt issuance costs	—			(10.6		)	—			—			—			(10.6		)
Employee stock option exercises, including tax benefit	—			0.1			—			—			—			0.1
Purchase of treasury stock	(5.9		)	—			—			—			—			(5.9		)
Purchase of noncontrolling interest	—			—			—			(4.0		)	—			(4.0		)
Intercompany activity	5.9			(5.9		)	—			37.4			(37.4		)	—
Net cash provided by (used in) financing activities	—			241.5			(0.2		)	49.6			(37.4		)	253.5
Effect of exchange rate changes on cash	—			—			—			0.6			—			0.6
Net decrease in cash and cash equivalents	—			(73.1		)	—			(33.7		)	—			(106.8		)
Cash and cash equivalents at beginning of period	—			83.7			—			85.5			—			169.2
Cash and cash equivalents at end of period	$	—		$	10.6		$	—		$	51.8		$	—		$	62.4

XML

Derivatives Derivatives (Tables)

12 Months Ended

Dec. 31, 2014

Derivatives and Risk Management [Abstract]

Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance [Table Text Block]

The following table summarizes the reclassification of pre-tax derivative gains (losses) into net income from accumulated other comprehensive income (loss):

	Location of Gain Reclassified into Net Income	Gain Reclassified During the Twelve Months Ended December 31,				Loss Expected to be Reclassified During the Next 12 Months
		2014		2013
		(in millions)
Currency forward contracts	Cost of Goods Sold	$	0.9	$	2.8	$	(7.2	)

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Supplemental Guarantor Condensed Consolidating Financial Statements 2014 Income Statement (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Ownership in subsidiary, percentage	100.00%								100.00%
Net sales
External									$ 3,696.0	$ 3,207.3	$ 2,930.9
Intercompany									0	0	0
Total net sales	939.5	950.8	946.9	858.8	831.3	820.8	799.6	755.6	3,696.0	3,207.3	2,930.9
Cost of goods sold									3,173.2	2,728.6	2,531.2
Gross Profit	111.2	140.7	149.0	121.9	126.9	125.3	122.2	104.3	522.8	478.7	399.7
Selling, general and administrative expenses									255.2	238.4	243.3
Operating income (loss)									267.6	240.3	156.4
Non-operating income (expense), net									(90.9)	(154.0)	(124.9)
Income (loss) before income taxes									176.7	86.3	31.5
Income tax expense (benefit)									33.7	(8.2)	(335.2)
Earnings (loss) from equity in subsidiaries									0	0	0
Net income (loss) before royalties and dividends									143.0	94.5	366.7
Royalties and dividends									0	0	0
Net income after royalties and dividends									143.0	94.5	366.7
Other comprehensive loss									(80.7)	48.4	(60.5)
Comprehensive income									62.3	142.9	306.9
Holdings [Member]
Net sales
External									0	0	0
Intercompany									0	0	0
Total net sales									0	0	0
Cost of goods sold									0	0	0
Gross Profit									0	0	0
Selling, general and administrative expenses									0	0	0
Operating income (loss)									0	0	0
Non-operating income (expense), net									0	0	0
Income (loss) before income taxes									0	0	0
Income tax expense (benefit)									0	0	0
Earnings (loss) from equity in subsidiaries									143.0	94.5	367.7
Net income (loss) before royalties and dividends									143.0	94.5	367.7
Royalties and dividends									0	0	0
Net income after royalties and dividends									143.0	94.5	367.7
Other comprehensive loss									(80.7)	48.4	(60.5)
Comprehensive income									62.3	142.9	306.9
AAM Inc. [Member]
Net sales
External									1,099.5	773.6	704.8
Intercompany									13.1	15.3	18.6
Total net sales									1,112.6	788.9	723.4
Cost of goods sold									1,112.4	769.4	709.8
Gross Profit									0.2	19.5	13.6
Selling, general and administrative expenses									194.0	182.4	186.5
Operating income (loss)									(193.8)	(162.9)	(172.9)
Non-operating income (expense), net									(103.0)	(155.1)	(135.2)
Income (loss) before income taxes									(296.8)	(318.0)	(308.1)
Income tax expense (benefit)									(11.8)	(24.9)	(343.9)
Earnings (loss) from equity in subsidiaries									204.0	167.0	79.0
Net income (loss) before royalties and dividends									(81.0)	(126.1)	114.8
Royalties and dividends									224.0	220.6	252.9
Net income after royalties and dividends									143.0	94.5	367.7
Other comprehensive loss									(80.7)	48.4	(60.5)
Comprehensive income									62.3	142.9	306.9
Guarantor Subsidiaries of Certain Notes [Member]
Net sales
External									225.1	226.0	214.4
Intercompany									246.9	226.1	226.8
Total net sales									472.0	452.1	441.2
Cost of goods sold									396.1	389.0	389.8
Gross Profit									75.9	63.1	51.4
Selling, general and administrative expenses									0.2	0.1	0
Operating income (loss)									75.7	63.0	51.4
Non-operating income (expense), net									9.0	10.7	(2.2)
Income (loss) before income taxes									84.7	73.7	49.2
Income tax expense (benefit)									0.9	0.9	(5.5)
Earnings (loss) from equity in subsidiaries									(23.3)	(21.7)	(49.2)
Net income (loss) before royalties and dividends									60.5	51.1	5.5
Royalties and dividends									0	0	0
Net income after royalties and dividends									60.5	51.1	5.5
Other comprehensive loss									(23.5)	(7.2)	(10.1)
Comprehensive income									37.0	43.9	(4.6)
Non-Guarantor Subsidiaries [Member]
Net sales
External									2,371.4	2,207.7	2,011.7
Intercompany									21.6	14.0	25.2
Total net sales									2,393.0	2,221.7	2,036.9
Cost of goods sold									1,946.3	1,825.6	1,702.2
Gross Profit									446.7	396.1	334.7
Selling, general and administrative expenses									61.0	55.9	56.8
Operating income (loss)									385.7	340.2	277.9
Non-operating income (expense), net									3.1	(9.6)	12.5
Income (loss) before income taxes									388.8	330.6	290.4
Income tax expense (benefit)									44.6	15.8	14.2
Earnings (loss) from equity in subsidiaries									0	0	0
Net income (loss) before royalties and dividends									344.2	314.8	276.2
Royalties and dividends									(224.0)	(220.6)	(252.9)
Net income after royalties and dividends									120.2	94.2	23.3
Other comprehensive loss									(34.8)	(10.8)	(3.6)
Comprehensive income									85.4	83.4	20.4
Consolidation, Eliminations [Member]
Net sales
External									0	0	0
Intercompany									(281.6)	(255.4)	(270.6)
Total net sales									(281.6)	(255.4)	(270.6)
Cost of goods sold									(281.6)	(255.4)	(270.6)
Gross Profit									0	0	0
Selling, general and administrative expenses									0	0	0
Operating income (loss)									0	0	0
Non-operating income (expense), net									0	0	0
Income (loss) before income taxes									0	0	0
Income tax expense (benefit)									0	0	0
Earnings (loss) from equity in subsidiaries									(323.7)	(239.8)	(397.5)
Net income (loss) before royalties and dividends									(323.7)	(239.8)	(397.5)
Royalties and dividends									0	0	0
Net income after royalties and dividends									(323.7)	(239.8)	(397.5)
Other comprehensive loss									139.0	(30.4)	74.2
Comprehensive income									$ (184.7)	$ (270.2)	$ (322.7)

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Long-Term Debt Leases (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Long-term Debt, Weighted Average Interest Rate	6.40%	6.30%	8.00%
Sale Leaseback Transaction, Net Proceeds, Investing Activities	$ 0	$ 24.1	$ 12.1
Operating leases, future minimum payments due, current	19.9
Operating leases, future minimum payments, due in two years	18.5
Operating leases, future minimum payments, due in three years	15.1
Operating leases, future minimum payments, due in four years	7.9
Operating leases, future minimum payments, due in five years	3.5
Operating lease expense	23.6	17.6	9.0
Capital Lease Obligations [Member]
Capital leased assets, gross	6.7	6.7
Capital leases, balance sheet, assets by major class, net	$ 5.0	$ 5.3
Long-term Debt, Weighted Average Interest Rate	8.90%

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Organization and Basis of Presentation Inventories (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Organization and Basis of Presentation [Abstract]
Raw materials and work-in-progress	$ 243.8	$ 263.4
Finished goods	32.9	25.7
Gross inventories	276.7	289.1
Inventory valuation reserves	(27.9)	(27.3)
Inventories, net	$ 248.8	$ 261.8

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Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current Assets
Cash and cash equivalents	$ 249.2	$ 154.0
Accounts receivable, net	532.7	458.5
Inventories, net	248.8	261.8
Deferred income taxes	40.2	34.9
Prepaid expenses and other	68.6	87.1
Total current assets	1,139.5	996.3
Property, plant and equipment, net	1,061.1	1,058.5
Deferred income taxes	368.8	341.8
Goodwill	155.0	156.4
GM postretirement cost sharing asset	274.5	242.0
Other assets and deferred charges	260.3	232.5
Total assets	3,259.2	3,027.5
Current Liabilities
Current portion of long-term debt	13.0	0
Accounts payable	444.3	437.4
Accrued compensation and benefits	109.1	110.1
Deferred revenue	22.1	17.0
Deferred income taxes	0.1	0.1
Other accrued expenses	98.6	94.1
Total current liabilities	687.2	658.7
Long-term debt	1,523.4	1,559.1
Deferred income taxes	9.1	9.8
Deferred revenue	94.2	76.4
Postretirement benefits and other long-term liabilities	831.9	683.0
Total liabilities	3,145.8	2,987.0
Stockholders' equity
Series A junior participating preferred stock, par value $0.01 per share; 0.1 million shares authorized; no shares outstanding in 2014 or 2013	0	0
Preferred stock, par value $0.01 per share; 10.0 million shares authorized; no shares outstanding in 2014 or 2013	0	0
Common stock, par value $0.01 per share; 150.0 million shares authorized; 81.9 million and 81.6 million shares issued and outstanding in 2014 and 2013, respectively	0.8	0.8
Series common stock, par value $0.01 per share; 40.0 million shares authorized; no shares outstanding in 2014 or 2013	0	0
Paid-in capital	623.7	612.8
Accumulated deficit	(31.4)	(174.4)
Treasury stock at cost, 6.1 million shares in 2014 and 6.0 million shares in 2013	(182.8)	(182.5)
Accumulated other comprehensive income (loss), net of tax
Defined benefit plans	(240.6)	(197.9)
Foreign currency translation adjustments	(48.9)	(18.6)
Unrecognized gain (loss) on derivatives	(7.4)	0.3
Total AAM stockholders' equity	113.4	40.5
Noncontrolling interest in subsidiaries	0	0
Total stockholders’ equity	113.4	40.5
Total liabilities and stockholders' equity	$ 3,259.2	$ 3,027.5

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Commitments and Contingencies Purchase Obligations (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Long-term Purchase Commitment [Line Items]
Obligated purchase commitments	$ 109.8	$ 161.4

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Long-Term Debt

12 Months Ended

Dec. 31, 2014

Long-term Debt, Unclassified [Abstract]

Long-term Debt [Text Block]

2. LONG-TERM DEBT AND LEASE OBLIGATIONS

Long-term debt consists of the following:

	December 31,
	2014		2013
	(in millions)
Revolving Credit Facility	$	—	$	—
Term Facility	142.5		150.0
7.75% Notes	200.0		200.0
6.625% Notes	550.0		550.0
6.25% Notes	400.0		400.0
5.125% Notes	200.0		200.0
Foreign credit facilities	38.9		53.8
Capital lease obligations	5.0		5.3
Debt	1,536.4		1,559.1
Less: Current portion of long-term debt	13.0		—
Long-term debt	$	1,523.4	$	1,559.1

REVOLVING CREDIT FACILITY AND TERM FACILITY As of December 31, 2014, the revolving credit facility provided up to $523.5 million of revolving bank financing commitments through September 13, 2018. At December 31, 2014, $505.5 million was available under the revolving credit facility, which reflected a reduction of $18.0 million for standby letters of credit issued against the facility.

The credit agreement provides for a senior secured term loan A facility in an aggregate principal amount of $150.0 million (term facility). During 2014, we made principal payments of $7.5 million on our term facility. We paid remaining debt issuance costs of $0.1 million in 2014 associated with the execution of amending our revolving credit facility and term facility. In 2013 and 2012, we paid debt issuance costs of $6.9 million and $1.7 million, respectively, associated with the amendments and restatements of our revolving credit facility.

Borrowings under the revolving credit facility and term facility bear interest at rates based on adjusted LIBOR or an alternate base rate, plus an applicable margin. The applicable margin for LIBOR-based loans will be between 1.5% and 3.0%.

In the event AAM achieves investment grade corporate credit ratings from S&P and Moody's, AAM may elect to release all of the collateral from the liens granted pursuant to the collateral agreement, subject to notice requirements and other conditions. The revolving credit facility and term facility are secured on a first priority basis by all or substantially all of the assets of AAM and each guarantor under the collateral agreement dated as of November 7, 2008, as amended and restated as of September 13, 2013. The revolving credit facility limits our ability to make certain investments, loans and guarantees, declare dividends or distributions on capital stock, redeem or repurchase capital stock and certain debt obligations, incur liens, incur indebtedness, enter into certain restrictive agreements, merge, make acquisitions or sell all or substantially all of our assets. 

The revolving credit facility provides back-up liquidity for our foreign credit facilities. We intend to use the availability of long-term financing under the revolving credit facility to refinance any current maturities related to such debt agreements that are not otherwise refinanced on a long-term basis in their local markets, except where otherwise reclassified to current portion of long-term debt on our Consolidated Balance Sheet.

In the first quarter of 2013, we terminated our class C loan facility of $72.8 million, which would have matured on June 30, 2013. Upon termination, we expensed $0.5 million of unamortized debt issuance costs related to the class C facility. We had been amortizing the debt issuance costs over the expected life of the borrowing.

9.25% NOTES In 2009, we issued $425.0 million of 9.25% senior secured notes due 2017 (9.25% Notes). The notes were issued at a discount of $5.5 million. Net proceeds from these notes were used for the repayment of certain indebtedness.

In 2012, we elected to exercise an option to redeem 10% of the original amount of our 9.25% Notes outstanding at a redemption price of 103% of the principal amount. This resulted in principal payments of $42.5 million and $1.3 million for the redemption premium, as well as payments of accrued interest in both 2012. We expensed $1.0 million in 2012 for the write-off of a proportional amount of unamortized debt discount and issuance costs related to this debt that we had been amortizing over the expected life of the borrowing.

Pursuant to the terms of our 9.25% Notes, in the fourth quarter of 2013, we voluntarily redeemed the remaining outstanding 9.25% Notes using the proceeds from the Term Facility and the issuance of the 5.125% Notes. This resulted in a principal payment of $340.0 million and $18.9 million for redemption premiums, as well as payments of accrued interest. We expensed $6.7 million in 2013 related to the write-off of the remaining unamortized debt discount and issuance costs related to our 9.25% Notes that we had been amortizing over the expected life of the borrowing.

7.875% NOTES In 2007, we issued $300.0 million of 7.875% senior unsecured notes due 2017 (7.875% Notes). Net proceeds from these notes were used for general corporate purposes, including payment of amounts outstanding under our revolving credit facility.

In the first quarter of 2013, we voluntarily purchased and redeemed $300.0 million of our 7.875% Notes, and paid accrued interest. Upon purchase and redemption, we expensed $8.5 million related to redemption premiums, $0.1 million of professional fees and unamortized debt issuance costs of $2.1 million related to this debt. We had been amortizing the debt issuance costs over the expected life of the borrowing.

7.75% NOTES In 2011, we issued $200.0 million of 7.75% senior unsecured notes due 2019 (7.75% Notes). Net proceeds from these notes were used for general corporate purposes, including the repayment of certain amounts outstanding under our revolving credit facility.

6.625% NOTES In 2012, we issued $550.0 million of 6.625% senior unsecured notes due 2022 (6.625% Notes). Net proceeds from the 6.625% Notes were used to fund the purchase and redemption of $250.0 million of the outstanding 5.25% senior unsecured notes, including the payment of interest, the redemption of $42.5 million aggregate principal amount of our 9.25% Notes, certain pension obligations and for other general corporate purposes. We paid debt issuance costs of $8.9 million related to the 6.625% Notes in 2012.

6.25% NOTES In 2013, we issued $400.0 million of 6.25% senior unsecured notes due 2021 (6.25% Notes). Net proceeds from the 6.25% Notes were used to fund the purchase and redemption of our 7.875% Notes and for other general corporate purposes. We paid debt issuance costs of $6.6 million in 2013 related to the 6.25% Notes.

5.125% NOTES In the fourth quarter of 2013, we issued$200.0 millionof5.125%senior unsecured notes due 2019 (5.125%Notes). Net proceeds from the5.125%Notes were used to redeem the remaining$190.0 millionoutstanding under our9.25%Notes. We paid debt issuance costs related to the5.125%Notes of$0.2 million and $3.1 million in 2014 and 2013, respectively.

LEASES We lease certain facilities under capital leases expiring at various dates. The gross asset cost of our capital lease was $6.7 million at both December 31, 2014 and December 31, 2013. The net book value included in property, plant and equipment, net on the balance sheet was $5.0 million and $5.3 million at December 31, 2014 and 2013, respectively. The weighted-average interest rate on this capital lease obligation at December 31, 2014 was 8.9%.

We also lease certain manufacturing machinery and equipment, commercial office and production facilities, vehicles and other assets under operating leases expiring at various dates. In 2013 and 2012, we entered into various sale-leaseback transactions for equipment to be used in production starting in 2013. We received proceeds of $24.1 million and $12.1 million in 2013 and 2012, respectively, as a result of these transactions. Future minimum payments under noncancelable operating leases are as follows: $19.9 million in 2015, $18.5 million in 2016, $15.1 million in 2017, $7.9 million in 2018, and $3.5 million in 2019. Our total expense relating to operating leases was $23.6 million, $17.6 million and $9.0 million in 2014, 2013 and 2012, respectively.

FOREIGN CREDIT FACILITIES We utilize local currency credit facilities to finance the operations of certain foreign subsidiaries. These credit facilities, some of which are guaranteed by Holdings and/or AAM, Inc., expire at various dates through July 2019. At December 31, 2014, $38.9 million was outstanding under these facilities and an additional $51.1 million was available.

DEBT MATURITIES Aggregate maturities of long-term debt are as follows (in millions):

2015	$	35.2
2016	17.1
2017	19.1
2018	109.2
2019	403.4
Thereafter	952.4
Total	$	1,536.4

INTEREST EXPENSE AND INVESTMENT INCOME Interest expense was $99.9 million in 2014, $115.9 million in 2013 and $101.6 million in 2012. The decrease in interest expense in 2014 as compared to 2013 is primarily due to the decrease in our weighted-average interest rate for the full year 2014 as compared to full year 2013. The decrease is also driven by lower average outstanding borrowings in 2014 as compared to 2013. The increase in interest expense in 2013 as compared to 2012 reflects higher average outstanding borrowings, during those comparable periods.

We capitalized interest of $5.8 million in 2014, $6.6 million in 2013 and $8.2 million in 2012. The weighted-average interest rate of our long-term debt outstanding at December 31, 2014 was 6.4% as compared to 6.3% and 7.9% at December 31, 2013 and 2012, respectively.

Investment income was $2.1 million in 2014 as compared to $0.6 million in both 2013 and 2012. Investment income includes interest and dividends earned on cash and cash equivalents and realized and unrealized gains and losses on our short-term investments during the period.

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Fair Value Impairments of Long-lived Assets Measured at Fair Value on a Nonrecurring Basis (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Asset impairment charges	$ 0	$ 0	$ 5.8
Payments to acquire equipment on lease				18.6
Change in Fair Value from Asset Impairment [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Asset impairment charges			5.8
Fair Value, Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Property, plant, and equipment, fair value disclosure			$ 0

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Income Taxes Components of Noncurrent Deferred Tax Assets and Liabilities (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Noncurrent deferred tax assets	$ 368.8	$ 341.8
U.S. tax on unremitted foreign earnings	0	(85.0)
Fixed assets and other	(9.1)	(9.8)
Noncurrent deferred tax asset, net	359.7	332.0
Deferred Tax Assets, Noncurrent [Member]
Employee benefits	193.9	161.5
NOL carryforwards	104.7	176.9
Tax credit carryforward	69.8	82.9
Capital allowance carryforward	14.4	16.0
Fixed assets	6.6	10.3
Deferred revenue	12.6	15.7
Capitalized expenditures	111.2	113.6
Other	2.3	2.9
Valuation allowances	(146.7)	(153.0)
Noncurrent deferred tax assets	368.8	426.8
Deferred Tax Assets, Current [Member]
Employee benefits	26.0	14.5
Other	$ 16.9	$ 24.6

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Employee Benefit Plans Defined Contribution Plans (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Salaried Savings Plan [Member]
Defined contribution plans, maximum company match, salaried voluntary savings plan	50.00%
Defined contribution plans, ARC, maximum employee contribution percentage	10.00%
Defined contribution plans, salaried voluntary savings plan, matching contributions during the period	$ 3.9	$ 3.9	$ 3.3
Annual Retirement Contribution (ARC) [Member]
Defined contribution plans, ARC, maximum employee contribution percentage	5.00%
Defined contribution plan, employer matching contribution, percent	3.00%
Defined contribution plans, ARC, contributions made during period	4.9	4.6	4.4
Defined contribution plans, ARC, hourly associates, contributions made during period	2.6	1.9	1.6
Hourly Voluntary Savings Plan [Member]
Defined contribution plans, ARC, maximum employee contribution percentage	6.00%
Defined contribution plan, maximum annual contribution per employee, amount	25.00%
Defined contribution plans, hourly voluntary savings plan, matching contributions during the period	$ 0.1	$ 0.1	$ 0.1

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Fair Value Fair Value (Tables)

12 Months Ended

Dec. 31, 2014

Fair Value [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

	December 31, 2014				December 31, 2013
	Carrying Amount		Fair Value		Carrying Amount		Fair Value		Input
	(in millions)				(in millions)
Balance Sheet Classification
Cash equivalents	$	35.3	$	35.3	$	6.1	$	6.1	Level 1
Prepaid expenses and other
Currency forward contracts	—		—		0.7		0.7		Level 2
Other accrued expenses
Currency forward contracts	8.3		8.3		0.4		0.4		Level 2
Other long-term liabilities
Currency forward contracts	0.1		0.1		—		—		Level 2

Fair Value, Liabilities Measured on Recurring Basis [Table Text Block]

	December 31, 2014				December 31, 2013
	Carrying Amount		Fair Value		Carrying Amount		Fair Value		Input
	(in millions)				(in millions)
Revolving Credit Facility	$	—	$	—	$	—	$	—	Level 2
Term Facility	142.5		141.1		150.0		147.8		Level 2
7.75% Notes	200.0		224.0		200.0		227.5		Level 2
6.625% Notes	550.0		583.0		550.0		578.9		Level 2
6.25% Notes	400.0		419.0		400.0		423.0		Level 2
5.125% Notes	200.0		202.6		200.0		206.0		Level 2

Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Table Text Block]

The following table summarizes impairments of long-lived assets measured at fair value on a nonrecurring basis subsequent to initial recognition:

Balance Sheet Classification	Fair Value Measurements using Level 3 Inputs		Asset Impairment Recorded in Twelve Months ended December 31, 2012
Property, plant and equipment, net	$	—	$	5.8

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Stock Based Compensation Stock Based Payment Awards - Equity Instruments Other Than Options (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, vested in period, total fair value	$ 1.7	$ 13.8
Share-based compensation arrangement by share-based payment award, equity instruments other than options, total share-based liabilities paid			0.2
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units outstanding	1.3	1.1	1.6
Restricted stock units granted	0.5	0.9	1.0
Restricted stock units vested	(0.1)	(0.7)	(1.4)
Restricted stock units canceled	(0.1)	0	(0.1)
Restricted stock units outstanding	1.6	1.3	1.1
Weighted-average grant date fair value outstanding	$ 14.54	$ 12.24	$ 11.08	$ 10.74
Weighted-average grant date fair value granted	$ 19.58	$ 12.79	$ 10.31
Weighted-average grant date fair value vested	$ 13.95	$ 11.06	$ 10.19
Weighted-average grant date fair value canceled	$ 12.76	$ 0.00	$ 26.02
Employee service share-based compensation, nonvested awards, total compensation cost not yet recognized, share-based awards other than options	10.4
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	1 year
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee service share-based compensation, nonvested awards, total compensation cost not yet recognized, share-based awards other than options	$ 5.3
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	2 years
EBITDA Award [Member] | Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units outstanding	0
Restricted stock units granted	0.2
Restricted stock units vested	0
Restricted stock units canceled	0
Restricted stock units outstanding	0.2
Weighted-average grant date fair value outstanding	$ 27.66	$ 0.00
Weighted-average grant date fair value granted	$ 27.66
Weighted-average grant date fair value vested	$ 0.00
Weighted-average grant date fair value canceled	$ 0.00
Total Shareholder Return (TSR) Awards [Member] | Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units outstanding	0
Restricted stock units granted	0.2
Restricted stock units vested	0
Restricted stock units canceled	0
Restricted stock units outstanding	0.2
Weighted-average grant date fair value outstanding	$ 21.11	$ 0.00
Weighted-average grant date fair value granted	$ 21.11
Weighted-average grant date fair value vested	$ 0.00
Weighted-average grant date fair value canceled	$ 0.00

XML

Organization and Basis of Presentation Revenue Recognition (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Sep. 30, 2009
Deferred Revenue Arrangement [Line Items]
Deferred revenue, current	$ 22,100,000	$ 17,000,000
Deferred revenue, noncurrent	94,200,000	76,400,000
Increase installed capacity and adjust product mix [Member]
Deferred Revenue Arrangement [Line Items]
Deferred Revenue, Additions	32,800,000
Deferred revenue, current	6,900,000
Deferred revenue, noncurrent	20,500,000
Deferred revenue, revenue recognized	5,400,000
Delay of a major program
Deferred Revenue Arrangement [Line Items]
Deferred Revenue, Additions	9,300,000.0
Deferred revenue	8,800,000.0
Deferred revenue, current	1,100,000
Deferred revenue, noncurrent	7,700,000
Deferred revenue, revenue recognized	500,000.0
2009 GM Agreement [Member]
Deferred Revenue Arrangement [Line Items]
2009 GM agreement, cash received				110,000,000
2009 GM agreement, deferred revenue recognized				79,700,000
Deferred revenue	37,500,000
Deferred revenue, current	8,000,000
Deferred revenue, noncurrent	29,500,000
Deferred revenue, revenue recognized	8,000,000	8,000,000	8,000,000
Miscellaneous Deferred Revenue [Member]
Deferred Revenue Arrangement [Line Items]
Deferred revenue, revenue recognized	$ 7,500,000	$ 10,500,000	$ 13,100,000

XML

Unaudited Quarterly Financial Data

12 Months Ended

Dec. 31, 2014

Unaudited Quarterly Financial Data [Abstract]

Quarterly Financial Information [Text Block]

12. UNAUDITED QUARTERLY FINANCIAL DATA

	Three Months Ended,
	March 31		June 30		September 30		December 31
	(in millions, except per share data)
2014
Net sales	$	858.8	$	946.9	$	950.8	$	939.5
Gross profit	121.9		149.0		140.7		111.2
Net income	33.6		52.2		44.0		13.2
Net income attributable to AAM	33.6		52.2		44.0		13.2
Basic EPS (1)	$	0.44	$	0.67	$	0.57	$	0.17
Diluted EPS (1)	$	0.44	$	0.67	$	0.57	$	0.17
2013
Net sales	$	755.6	$	799.6	$	820.8	$	831.3
Gross profit	104.3		122.2		125.3		126.9
Net income	7.3		25.8		31.6		29.8
Net income attributable to AAM	7.3		25.8		31.6		29.8
Basic EPS (1)	$	0.10	$	0.34	$	0.41	$	0.39
Diluted EPS (1)	$	0.10	$	0.34	$	0.41	$	0.39

(1) Full year basic and diluted EPS will not necessarily agree to the sum of the four quarters because each quarter is a separate calculation.