10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

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

For the quarterly period ended March 31, 2020

OR

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

Commission File No. 001-35456

ALLISON TRANSMISSION HOLDINGS, INC.

(Exact Name of Registrant as Specified in Its Charter)

Delaware		26-0414014
(State or Other Jurisdiction of Incorporation or Organization)		(I.R.S. Employer Identification Number)
One Allison Way
Indianapolis,	IN	46222
(Address of Principal Executive Offices)		(Zip Code)

(317) 242-5000

(Registrant’s Telephone Number, Including Area Code)

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

Title of Each Class	Trading Symbol(s)	Name of Each Exchange on which Registered
Common stock, $0.01 par value	ALSN	New York Stock Exchange

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  ☒    No  ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted 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 such files).     Yes  ☒    No  ☐

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

Large accelerated filer	☒	Accelerated filer	☐
Non-accelerated filer	☐	Smaller reporting company	☐
		Emerging growth company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.    ☐

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

As of April 15, 2020, there were 113,176,677 shares of Common Stock outstanding.

INDEX

		Page
	PART I. FINANCIAL INFORMATION
Item 1.	Financial Statements	3 - 6
	Condensed Consolidated Balance Sheets	3
	Condensed Consolidated Statements of Comprehensive Income	4
	Condensed Consolidated Statements of Cash Flows	5
	Condensed Consolidated Statements of Stockholders’ Equity	6
	Notes to Condensed Consolidated Financial Statements	7 – 23
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	24 - 34
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	35
Item 4.	Controls and Procedures	36
	PART II. OTHER INFORMATION
Item 1.	Legal Proceedings	37
Item 1A.	Risk Factors	37 - 39
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	40
Item 6.	Exhibits	41
	Signatures	42

2

PART I. FINANCIAL INFORMATION

ITEM 1. Financial Statements

Allison Transmission Holdings, Inc.

Condensed Consolidated Balance Sheets

(unaudited, dollars in millions, except share and per share data)

	March 31, 2020			December 31, 2019
ASSETS
Current Assets
Cash and cash equivalents	$	114		$	192
Accounts receivable – net of allowances for doubtful accounts of $1		303			253
Inventories		207			199
Other current assets		42			42
Total Current Assets		666			686
Property, plant and equipment, net		627			616
Intangible assets, net		1,026			1,042
Goodwill		2,041			2,041
Other non-current assets		64			65
TOTAL ASSETS	$	4,424		$	4,450
LIABILITIES
Current Liabilities
Accounts payable	$	191		$	150
Product warranty liability		25			24
Current portion of long-term debt		6			6
Deferred revenue		34			35
Other current liabilities		170			202
Total Current Liabilities		426			417
Product warranty liability		26			28
Deferred revenue		106			104
Long-term debt		2,512			2,512
Deferred income taxes		415			387
Other non-current liabilities		246			221
TOTAL LIABILITIES		3,731			3,669
Commitments and contingencies (see NOTE P)
STOCKHOLDERS’ EQUITY
Common stock, $0.01 par value, 1,880,000,000 shares authorized, 113,176,677 shares issued and outstanding and 118,199,782 shares issued and outstanding, respectively		1			1
Non-voting common stock, $0.01 par value, 20,000,000 shares authorized, none issued and outstanding		—			—
Preferred stock, $0.01 par value, 100,000,000 shares authorized, none issued and outstanding		—			—
Paid in capital		1,804			1,802
Accumulated deficit		(1,031	)		(970	)
Accumulated other comprehensive loss, net of tax		(81	)		(52	)
TOTAL STOCKHOLDERS’ EQUITY		693			781
TOTAL LIABILITIES & STOCKHOLDERS’ EQUITY	$	4,424		$	4,450

The accompanying notes are an integral part of the condensed consolidated financial statements.

3

Allison Transmission Holdings, Inc.

Condensed Consolidated Statements of Comprehensive Income

(unaudited, dollars in millions, except per share data)

	Three Months Ended March 31,
	2020			2019
Net sales	$	637		$	675
Cost of sales		311			316
Gross profit		326			359
Selling, general and administrative		75			84
Engineering — research and development		36			31
Operating income		215			244
Interest expense, net		(33	)		(36	)
Other (expense) income, net		(1	)		3
Income before income taxes		181			211
Income tax expense		(42	)		(44	)
Net income	$	139		$	167
Basic earnings per share attributable to common stockholders	$	1.20		$	1.33
Diluted earnings per share attributable to common stockholders	$	1.20		$	1.32
Comprehensive income, net of tax	$	110		$	164

The accompanying notes are an integral part of the condensed consolidated financial statements.

4

Allison Transmission Holdings, Inc.

Condensed Consolidated Statements of Cash Flows

(unaudited, dollars in millions)

	For the Three Months Ended March 31,
	2020			2019
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$	139		$	167
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred income taxes		35			13
Depreciation of property, plant and equipment		22			18
Amortization of intangible assets		16			22
Stock-based compensation		3			3
Amortization of deferred financing costs		1			1
Expenses related to long-term debt refinancing		—			5
Other		3			(1	)
Changes in assets and liabilities:
Accounts receivable		(51	)		(54	)
Inventories		(9	)		(18	)
Accounts payable		21			34
Other assets and liabilities		(32	)		4
Net cash provided by operating activities		148			194
CASH FLOWS FROM INVESTING ACTIVITIES:
Additions of long-lived assets		(21	)		(19	)
Net cash used for investing activities		(21	)		(19	)
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings on revolving credit facility		300			—
Payments on revolving credit facility		(300	)		—
Repurchases of common stock		(180	)		(50	)
Dividend payments		(20	)		(19	)
Payments on long-term debt		(2	)		(1,148	)
Taxes paid related to net share settlement of equity awards		(2	)		(4	)
Proceeds from exercise of stock options		1			—
Issuance of long-term debt		—			1,148
Debt financing fees		—			(10	)
Net cash used for financing activities		(203	)		(83	)
Effect of exchange rate changes on cash		(2	)		1
Net (decrease) increase in cash and cash equivalents		(78	)		93
Cash and cash equivalents at beginning of period		192			231
Cash and cash equivalents at end of period	$	114		$	324
Supplemental disclosures:
Interest paid	$	8		$	14
Income taxes paid	$	6		$	6

The accompanying notes are an integral part of the condensed consolidated financial statements.

5

Allison Transmission Holdings, Inc.

Condensed Consolidated Statements of Stockholders’ Equity

(unaudited, dollars in millions)

	Three months ended
	Common Stock		Non-voting Common Stock		Preferred Stock		Paid-in Capital			Accumulated (Deficit) Income			Accumulated Other Comprehensive (Loss) Income, net of tax			Stockholders' Equity
Balance at December 31, 2018	$	1	$	—	$	—	$	1,788		$	(1,100	)	$	(30	)	$	659
Stock-based compensation		—		—		—		3			—			—			3
Pension and OPEB liability adjustment		—		—		—		—			—			6			6
Available-for-sale securities and interest rate swaps		—		—		—		—			—			(9	)		(9	)
Issuance of common stock		—		—		—		(4	)		—			—			(4	)
Repurchase of common stock		—		—		—		—			(50	)		—			(50	)
Dividends on common stock		—		—		—		—			(19	)		—			(19	)
Impact of adopting accounting standards		—		—		—		—			(8	)		—			(8	)
Net income		—		—		—		—			167			—			167
Balance at March 31, 2019	$	1	$	—	$	—	$	1,787		$	(1,010	)	$	(33	)	$	745
Balance at December 31, 2019	$	1	$	—	$	—	$	1,802		$	(970	)	$	(52	)	$	781
Stock-based compensation		—		—		—		3			—			—			3
Pension and OPEB liability adjustment		—		—		—		—			—			(4	)		(4	)
Foreign currency translation adjustment		—		—		—		—			—			(2	)		(2	)
Available-for-sale securities and interest rate swaps		—		—		—		—			—			(23	)		(23	)
Issuance of common stock		—		—		—		(1	)		—			—			(1	)
Repurchase of common stock		—		—		—		—			(180	)		—			(180	)
Dividends on common stock		—		—		—		—			(20	)		—			(20	)
Net income		—		—		—		—			139			—			139
Balance at March 31, 2020	$	1	$	—	$	—	$	1,804		$	(1,031	)	$	(81	)	$	693

The accompanying notes are an integral part of the condensed consolidated financial statements.

6

Allison Transmission Holdings, Inc.

Notes to Condensed Consolidated Financial Statements

(UNAUDITED)

NOTE A. OVERVIEW

Overview

Allison Transmission Holdings, Inc. and its subsidiaries (“Allison,” or the “Company”) design and manufacture vehicle propulsion solutions, including commercial duty on-highway, off-highway and defense fully automatic transmissions and electric hybrid and fully electric systems. The business was founded in 1915 and has been headquartered in Indianapolis, Indiana since inception. Allison was an operating unit of General Motors Corporation from 1929 until 2007, when Allison once again became a stand-alone company. In March 2012, Allison began trading on the New York Stock Exchange under the symbol, “ALSN”.

Although approximately 77% of revenues were generated in North America in 2019, the Company has a global presence by serving customers in Europe, Asia, South America and Africa. The Company serves customers through an independent network of approximately 1,500 independent distributor and dealer locations worldwide.

In March 2020, the World Health Organization categorized the novel coronavirus ("COVID-19") as a pandemic, and it continues to spread throughout the United States and other major markets in which the Company operates across the world. To limit the spread of COVID-19, governments have taken various actions including the issuance of stay-at-home orders and social distancing guidelines. While the majority of the Company’s plants are continuing to operate as essential businesses, the Company’s manufacturing facilities in Hungary, India, Indianapolis and Tennessee have suspended or cut back on operating levels and shifts as a result of government orders, the Company’s inability to obtain component parts from suppliers and/or decreased customer demand, and additional suspensions and cutbacks may occur as the impacts from COVID-19 and related responses continue to develop within the Company’s global supply chains and customer base. The Company is taking a variety of measures to maintain operations with as minimal impact as possible to its stakeholders and to promote the safety and security of its employees, including increased frequency of cleaning and disinfecting of facilities, social distancing, remote working when possible, travel restrictions and limitations on visitor access to facilities.

NOTE B. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation and Principles of Consolidation

The condensed consolidated financial statements have been prepared in accordance with accounting principles for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, the condensed consolidated financial statements do not include all information and footnotes required by accounting principles generally accepted in the United States of America (“GAAP”) for complete financial statements. The information herein reflects all normal recurring material adjustments, which are, in the opinion of management, necessary for the fair statement of the results for the periods presented. The condensed consolidated financial statements herein consist of all wholly-owned domestic and foreign subsidiaries with all significant intercompany transactions eliminated.

These condensed consolidated financial statements present the financial position, results of comprehensive income, cash flows and statements of equity of the Company. The condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements included in the Company’s Form 10-K for the year ended December 31, 2019 as filed with the Securities and Exchange Commission on February 27, 2020. The interim period financial results for the three month period presented is not necessarily indicative of results to be expected for any other interim period or for the entire year.

7

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities and the reported amounts of revenue and expenses. Estimates include, but are not limited to, sales allowances, government price adjustments, fair market values and future cash flows associated with goodwill, indefinite life intangibles, definite life intangibles, long-lived asset impairment tests, useful lives for depreciation and amortization, warranty liabilities, environmental liabilities, determination of discount and other assumptions for pension and other post-retirement benefit expense, determination of discount rate and period for leases, income taxes and deferred tax valuation allowances, derivative valuation, assumptions for business combinations and contingencies. The Company’s accounting policies involve the application of judgments and assumptions made by management that include inherent risks and uncertainties. Due to the speed with which the COVID-19 situation is developing, actual results could differ materially from the estimates and assumptions used in preparation of the financial statements including, but not limited to, future cash flows associated with goodwill, indefinite life intangibles, definite life intangibles, long-lived impairment tests, determination of discount and other assumptions for pension and other post-retirement benefit expense and income taxes. Changes in estimates are recorded in results of operations in the period that the events or circumstances giving rise to such changes occur.

Recently Adopted Accounting Pronouncements

In June 2016, the Financial Accounting Standards Board (“FASB”) issued authoritative accounting guidance on the presentation of financial assets at the net amount expected to be collected, which guidance has subsequently been amended. The guidance also requires the disclosure of financing receivables disaggregated by the year of origination. The Company adopted this guidance using a modified retrospective approach effective January 1, 2020. The adoption of this guidance did not have a material impact on the Company's condensed consolidated financial statements.

In August 2018, the FASB issued authoritative accounting guidance amending disclosure requirements for certain assets subject to fair value measurement. The guidance allows the Company to reduce the amount of disclosure on transfers between Level 1 and Level 2 assets. The Company adopted this guidance effective January 1, 2020. The adoption of this guidance did not have a material impact on the Company's condensed consolidated financial statements.

In August 2018, the FASB issued authoritative accounting guidance on accounting for implementation costs in hosting arrangements to align these costs with existing guidance for internally developed software. The stage of implementation must be assessed to determine if costs should be capitalized or expensed, and capitalized costs should be expensed during the noncancellable term of the agreement. The Company adopted this guidance on a prospective basis effective January 1, 2020. The adoption of this guidance did not have a material impact on the Company's condensed consolidated financial statements.

8

Recently Issued Accounting Pronouncements

In August 2018, the FASB issued authoritative accounting guidance amending disclosure requirements for the Company's defined benefit pension plans and other postretirement benefit plan. The guidance will be effective for the Company in 2021, and the Company does not plan to early adopt. Management is currently identifying and evaluating the impact of this guidance on the Company's disclosures and condensed consolidated financial statements.

In December 2019, the FASB issued authoritative accounting guidance to simplify the accounting for income taxes. The guidance identifies specific exceptions to be removed from the calculation and reporting of income taxes. The guidance will be effective for the Company in 2021, and the Company does not plan to early adopt. Management is currently evaluating the impact of this guidance on the Company's condensed consolidated financial statements.

In March 2020, the FASB issued authoritative accounting guidance regarding highly effective cash flow hedges affected by reference rate reform. The guidance allows the Company to continue to classify its interest rate hedges as highly effective subsequent to reference rate reform under certain circumstances. The guidance may be adopted in any interim period between March 2020 and December 2020, with the amendments applied prospectively. Management is currently evaluating the impact of this guidance on the Company's condensed consolidated financial statements.

NOTE C. REVENUE

Revenue is recognized as each distinct performance obligation within a contract is satisfied. A performance obligation is a promise in a contract to transfer a distinct good or service to the customer. The Company enters into long-term agreements (“LTAs”) and distributor agreements with certain customers. The LTAs and distributor agreements do not include committed volumes until underlying purchase orders are issued; therefore, the Company determined that purchase orders are the contract with a customer. A contract’s transaction price is allocated to each distinct performance obligation and recognized as revenue when the performance obligation is satisfied, as there is no right of return.

Some of the Company's contracts include multiple performance obligations, most commonly the sale of both a transmission and Extended Transmission Coverage ("ETC"). The Company allocates the contract’s transaction price to each performance obligation based on the standalone selling price of each distinct good or service in the contract.

The Company may also use volume based discounts and rebates as marketing incentives in the sales of both transmissions and service parts, which are accounted for as variable consideration. The Company records the impact of the incentives as a reduction to revenue when it is determined that the adjustment is not likely to reverse, historically on a quarterly basis. The Company estimates the impact of all other incentives based on the related sales and market conditions in the end market vocation. The Company recorded no adjustments based on variable consideration during the three months ended March 31, 2020 and 2019.

Net sales are made on credit terms, generally 30 days, based on an assessment of the customer’s creditworthiness. For certain goods or services, the Company receives consideration prior to satisfying the related performance obligation. Such consideration is recorded as a contract liability in current and non-current Deferred revenue as of March 31, 2020 and December 31, 2019. See Note J, “Deferred Revenue” for more information including the amount of revenue earned during the three months ended March 31, 2020 and 2019 that had been previously deferred. The Company had no contract assets as of March 31, 2020 and December 31, 2019.

9

The following presents disaggregated revenue by categories that best depict how the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors (dollars in millions):

	Three Months Ended March 31,
	2020		2019
North America On-Highway	$	352	$	377
North America Off-Highway		8		14
Defense		40		32
Outside North America On-Highway		72		94
Outside North America Off-Highway		27		27
Service Parts, Support Equipment and Other		138		131
Total Net Sales	$	637	$	675

NOTE D. INVENTORIES

Inventories consisted of the following components (dollars in millions):

	March 31, 2020		December 31, 2019
Purchased parts and raw materials	$	103	$	91
Work in progress		22		17
Service parts		52		60
Finished goods		30		31
Total inventories	$	207	$	199

Inventory components shipped to third parties, primarily cores, parts to re-manufacturers, and parts to contract manufacturers, which the Company has an obligation to buy back, are included in purchased parts and raw materials, with an offsetting liability in Other current liabilities. See NOTE L, “Other Current Liabilities” for more information.

10

NOTE E. GOODWILL AND OTHER INTANGIBLE ASSETS

As of March 31, 2020 and December 31, 2019, the carrying amount of the Company’s Goodwill was $2,041 million.

The following presents a summary of other intangible assets (dollars in millions):

	March 31, 2020							December 31, 2019
	Intangible assets, gross		Accumulated amortization			Intangible assets, net		Intangible assets, gross		Accumulated amortization			Intangible assets, net
Other intangible assets:
Trade name	$	791	$	—		$	791	$	791	$	—		$	791
In process research and development		50		—			50		50		—			50
Customer relationships — commercial		839		(675	)		164		839		(664	)		175
Proprietary technology		481		(477	)		4		481		(473	)		8
Customer relationships — defense		62		(45	)		17		62		(44	)		18
Total	$	2,223	$	(1,197	)	$	1,026	$	2,223	$	(1,181	)	$	1,042

As of March 31, 2020 and December 31, 2019, the net carrying value of the Company’s Goodwill and other intangible assets, net was $3,067 million and $3,083 million, respectively.

Amortization expense related to other intangible assets for the next five fiscal years is expected to be (dollars in millions):

	2021		2022		2023		2024		2025
Amortization expense	$	46	$	45	$	43	$	8	$	4

11

NOTE F. FAIR VALUE OF FINANCIAL INSTRUMENTS

In accordance with the FASB’s authoritative accounting guidance on fair value measurements, fair value is the price (exit 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 Company utilizes market data or assumptions that market participants would use in pricing the asset or liability, including assumptions about risk and the risks inherent in the inputs to the valuation technique. These inputs can be readily observable, market corroborated, or generally unobservable. The Company primarily applies the market approach for recurring fair value measurements and utilizes the best available information that maximizes the use of observable inputs and minimizes the use of unobservable inputs. The Company is able to classify fair value balances based on the observability of those inputs. The accounting guidance establishes a fair value hierarchy that prioritizes the inputs used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurement) and the lowest priority to unobservable inputs (Level 3 measurement). The three levels of the fair value hierarchy defined by the relevant guidance are as follows:

Level 1 — Quoted prices are available in active markets for identical assets or liabilities as of the reporting date. Active markets are those in which transactions for the asset or liability occur in sufficient frequency and volume to provide pricing information on an ongoing basis. Level 1 primarily consists of financial instruments such as exchange-traded derivatives, listed equities and publicly traded bonds.

Level 2 — Pricing inputs are other than quoted prices in active markets included in Level 1, which are either directly or indirectly observable as of the reported date. Level 2 includes financial instruments that are valued using quoted prices in markets that are not active and those financial instruments that are valued using models or other valuation methodologies. These models are primarily industry standard models that consider various assumptions, including quoted forward prices for commodities, time value, volatility factors, and current market and contractual prices for the underlying instruments, as well as other relevant economic measures. Substantially all of these assumptions are observable in the marketplace throughout the full term of the instrument, can be derived from observable data or are supported by observable levels at which transactions are executed in the marketplace.

Level 3 — Pricing inputs include significant inputs that are generally less observable from objective sources. These inputs may be used with internally developed methodologies that result in management’s best estimate of fair value. At each balance sheet date, the Company performs an analysis of all instruments subject to authoritative accounting guidance and includes, in Level 3, all of those whose fair value is based on significant unobservable inputs. As of March 31, 2020 and December 31, 2019, the Company did not have any Level 3 financial assets or liabilities.

The Company’s assets and liabilities that are measured at fair value include cash equivalents, derivative instruments, assets held in a rabbi trust and a deferred compensation obligation. The Company’s cash equivalents consist of short-term U.S. government backed securities. The Company’s derivative instruments consist of interest rate swaps. The Company’s assets held in the rabbi trust consist principally of publicly available mutual funds and target date retirement funds. The Company’s deferred compensation obligation is directly related to the fair value of assets held in the rabbi trust.

The Company’s valuation techniques used to calculate the fair value of cash and cash equivalents, assets held in the rabbi trust and the deferred compensation obligation represent a market approach in active markets for identical assets that qualify as Level 1 in the fair value hierarchy. The Company’s valuation techniques used to calculate the fair value of derivative instruments represent a market approach with observable inputs that qualify as Level 2 in the fair value hierarchy.

The Company uses valuations from the issuing financial institutions for the fair value measurement of interest rate swaps. The floating-to-fixed interest rate swaps are based on the London Interbank Offered Rate (“LIBOR”), which is observable at commonly quoted intervals. The fair values are included in other current and non-current assets and liabilities in the Condensed Consolidated Balance Sheets.

12

The following table summarizes the fair value of the Company’s financial assets and (liabilities) as of March 31, 2020 and December 31, 2019 (dollars in millions):

	Fair Value Measurements Using
	Quoted Prices in Active Markets for Identical Assets (Level 1)						Significant Other Observable Inputs (Level 2)						TOTAL
	March 31, 2020			December 31, 2019			March 31, 2020			December 31, 2019			March 31, 2020			December 31, 2019
Cash equivalents	$	—		$	70		$	—		$	—		$	—		$	70
Rabbi trust assets		12			12			—			—			12			12
Deferred compensation obligation		(12	)		(12	)		—			—			(12	)		(12	)
Derivative liabilities		—			—			(63	)		(34	)		(63	)		(34	)
Total	$	—		$	70		$	(63	)	$	(34	)	$	(63	)	$	36

NOTE G. DEBT

Long-term debt and maturities are as follows (dollars in millions):

	March 31, 2020		December 31, 2019
Long-term debt:
Senior Notes, fixed 5.0%, due 2024	$	1,000	$	1,000
Senior Secured Credit Facility Term Loan, variable, due 2026		643		644
Senior Notes, fixed 4.75%, due 2027		400		400
Senior Notes, fixed 5.875%, due 2029		500		500
Total long-term debt	$	2,543	$	2,544
Less: current maturities of long-term debt		6		6
deferred financing costs, net		25		26
Total long-term debt, net	$	2,512	$	2,512

As of March 31, 2020, the Company had $2,543 million of indebtedness associated with Allison Transmission, Inc.’s (“ATI”), the Company’s wholly-owned subsidiary, 5.0% Senior Notes due September 2024 (“5.0% Senior Notes”), ATI’s 4.75% Senior Notes due October 2027 (“4.75% Senior Notes”), ATI’s 5.875% Senior Notes due June 2029 (“5.875% Senior Notes,” and, together with the 5.0% Senior Notes and 4.75% Senior Notes, the “Senior Notes”) and the Second Amended and Restated Credit Agreement dated as of March 29, 2019 (the “Credit Agreement”), governing ATI’s new term loan facility in the amount of $643 million due March 2026 (“New Term Loan”) and ATI’s new revolving credit facility with commitments in the amount of $600 million due September 2024 (“New Revolving Credit Facility” and, together with the New Term Loan, the “New Senior Secured Credit Facility”).

The fair value of the Company’s long-term debt obligations as of March 31, 2020 was $2,397 million. The fair value is based on quoted Level 2 market prices of the Company’s debt as of March 31, 2020. It is not expected that the Company would be able to repurchase a significant amount of its debt at these levels. The difference between the fair value and carrying value of the long-term debt is driven primarily by trends in the financial markets.

13

New Senior Secured Credit Facility

In March 2019, the Company and ATI entered into the Credit Agreement to reduce the commitments under the prior term loan due 2022 (“Prior Term Loan”) by $500 million and increase the commitments under the prior $550 million revolving credit facility due 2021 (“Prior Revolving Credit Facility” and, together with the Prior Term Loan, the “Prior Senior Secured Credit Facility”) by $50 million. The New Senior Secured Credit Facility also extended the maturity of the Prior Term Loan from 2022 to 2026 and extended the Prior Revolving Credit Facility termination date from 2021 to 2024. The New Senior Secured Credit Facility replaced the Prior Senior Secured Credit Facility, including the Prior Term Loan and Prior Revolving Credit Facility, on March 29, 2019. The Credit Agreement was treated as a modification to the Prior Senior Secured Credit Facility under GAAP, and thus the Company expensed $5 million of prior deferred financing fees and $1 million of related third party fees in the Condensed Consolidated Statement of Comprehensive Income for the three months ended March 31, 2019 and recorded $5 million as new deferred financing fees in the Condensed Consolidated Balance Sheet in the first quarter of 2019.

In October 2019, ATI entered into an amendment to the Credit Agreement with the lenders under its New Senior Secured Credit Facility to lower the applicable margins on the New Term Loan by 0.25%. The October 2019 amendment was treated as a modification to the New Senior Secured Credit Facility under GAAP.

The borrowings under the New Senior Secured Credit Facility are collateralized by a lien on substantially all assets of the Company, ATI and each of the existing and future U.S. subsidiary guarantors, with certain exceptions set forth in the Credit Agreement, and ATI’s capital stock and all of the capital stock or other equity interests held by the Company, ATI and each of ATI’s existing and future U.S. subsidiary guarantors (subject to certain limitations for equity interest of foreign subsidiaries and other exceptions set forth in the Credit Agreement). Interest on the New Term Loan, as of March 31, 2020, is either (a) 1.75% over a LIBOR rate on deposits in U.S. dollars for one-, two-, three- or six-month periods (or twelve-month or shorter periods if, at the time of the borrowing, available from all relevant lenders) (the "LIBOR Rate"), or (b) 0.75% over the greater of the prime lending rate as quoted by the administrative agent, the LIBOR Rate for an interest period of one month plus 1.00% and the federal funds effective rate published by the Federal Reserve Bank of New York plus 0.50%, subject to a 1.00% floor (the "Base Rate"). As of March 31, 2020, the Company elected to pay the lowest all-in rate of LIBOR plus the applicable margin, or 2.67%, on the New Term Loan. The Credit Agreement requires minimum quarterly principal payments on the New Term Loan, as well as prepayments from certain net cash proceeds of non-ordinary course asset sales and casualty and condemnation events, the incurrence of certain debt and from a percentage of excess cash flow, if applicable. The minimum required quarterly principal payment on the New Term Loan through its maturity date of March 2026 is $2 million. As of March 31, 2020, there had been no payments required for certain net cash proceeds of non-ordinary course asset sales and casualty and condemnation events. The remaining principal balance is due upon maturity.

The New Senior Secured Credit Facility also provides a New Revolving Credit Facility, net of an allowance for up to $75 million in outstanding letters of credit commitments. Throughout the three months ended March 31, 2020, the Company made periodic withdrawals and payments on the New Revolving Credit Facility as part of the Company's debt management plans. The maximum amount outstanding at any time during the three months ended March 31, 2020 was $300 million. As of March 31, 2020, the Company had $595 million available under the New Revolving Credit Facility, net of $5 million in letters of credit. Borrowings under the New Revolving Credit Facility bear interest at a variable base rate plus an applicable margin based on the Company’s first lien net leverage ratio. When the Company’s first lien net leverage ratio is above 4.00x, interest on the New Revolving Credit Facility is (a) 0.75% over the Base Rate or (b) 1.75% over the LIBOR Rate; when the Company’s first lien net leverage ratio is equal to or less than 4.00x and above 3.50x, interest on the New Revolving Credit Facility is (i) 0.50% over the Base Rate or (ii) 1.50% over the LIBOR Rate; and when the Company’s first lien net leverage ratio is equal to or below 3.50x, interest on the New Revolving Credit Facility is (y) 0.25% over the Base Rate or (z) 1.25% over the LIBOR Rate. As of March 31, 2020, the applicable margin for the New Revolving Credit Facility was 1.25%. In addition, there is an annual commitment fee, based on the Company’s first lien net leverage ratio, on the average unused revolving credit borrowings available under the New Revolving Credit Facility. As of March 31, 2020, the commitment fee is 0.25%. Borrowings under the New Revolving Credit Facility are payable at the option of the Company throughout the term of the New Senior Secured Credit Facility with the balance due in September 2024.

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The New Senior Secured Credit Facility requires the Company to maintain a specified maximum first lien net leverage ratio of 5.50x when revolving loan commitments remain outstanding on the New Revolving Credit Facility at the end of a fiscal quarter. As of March 31, 2020, the Company had no amounts outstanding under the New Revolving Credit Facility; however, the Company would have been in compliance with the maximum first lien net leverage ratio, achieving a 0.50x ratio. Additionally, within the terms of the New Senior Secured Credit Facility, a first lien net leverage ratio at or below 4.00x results in the elimination of excess cash flow payments on the New Senior Secured Credit Facility for the applicable year.

In addition, the Credit Agreement, among other things, includes customary restrictions (subject to certain exceptions) on the Company’s ability to incur certain indebtedness, grant certain liens, make certain investments, engage in acquisitions, consolidations and mergers, declare or pay certain dividends or repurchase shares of the Company’s common stock. As of March 31, 2020, the Company was in compliance with all covenants under the Credit Agreement.

5.0% Senior Notes

The 5.0% Senior Notes are unsecured and are guaranteed by each of ATI’s domestic subsidiaries that is a borrower under or guarantees the New Senior Secured Credit Facility and are unconditionally guaranteed, jointly and severally, by any of ATI’s future domestic subsidiaries that are borrowers under or guarantee the New Senior Secured Credit Facility. None of ATI’s domestic subsidiaries currently guarantee its obligations under the New Senior Secured Credit Facility, and therefore none of ATI’s domestic subsidiaries currently guarantee the 5.0% Senior Notes. The indenture governing the 5.0% Senior Notes contains negative covenants restricting or limiting the Company’s ability to, among other things: incur or guarantee additional indebtedness, incur liens, pay dividends on, redeem or repurchase the Company’s capital stock, make certain investments, permit payment or dividend restrictions on certain of the Company’s subsidiaries, sell assets, engage in certain transactions with affiliates, and consolidate or merge or sell all or substantially all of the Company’s assets. As of March 31, 2020, the Company was in compliance with all covenants under the indenture governing the 5.0% Senior Notes.

4.75% Senior Notes

The 4.75% Senior Notes are unsecured and are guaranteed by each of ATI’s domestic subsidiaries that is a borrower under or guarantees the New Senior Secured Credit Facility and are unconditionally guaranteed, jointly and severally, by any of ATI’s future domestic subsidiaries that are borrowers under or guarantee the New Senior Secured Credit Facility. None of ATI’s domestic subsidiaries currently guarantee its obligations under the New Senior Secured Credit Facility, and therefore none of ATI’s domestic subsidiaries currently guarantee the 4.75% Senior Notes. The indenture governing the 4.75% Senior Notes contains negative covenants restricting or limiting the Company’s ability to, among other things: incur or guarantee additional indebtedness, incur liens, pay dividends on, redeem or repurchase the Company’s capital stock, make certain investments, permit payment or dividend restrictions on certain of the Company’s subsidiaries, sell assets, engage in certain transactions with affiliates, and consolidate or merge or sell all or substantially all of the Company’s assets. As of March 31, 2020, the Company was in compliance with all covenants under the indenture governing the 4.75% Senior Notes.

5.875% Senior Notes

In March 2019, ATI completed an offering of $500 million of the 5.875% Senior Notes. The 5.875% Senior Notes were offered in a private placement exempt from registration under the Securities Act of 1933, as amended. The net proceeds from the offering, together with borrowings under the New Senior Secured Credit Facility and cash on hand, were used to repay all of the outstanding borrowings under the Prior Term Loan plus accrued and unpaid interest and related transaction expenses. As a result of the offering, the Company recorded $6 million as deferred financing fees in the Condensed Consolidated Balance Sheet in the first quarter of 2019.

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The 5.875% Senior Notes are unsecured and are guaranteed by each of ATI’s domestic subsidiaries that is a borrower under or guarantees the New Senior Secured Credit Facility and are unconditionally guaranteed, jointly and severally, by any of ATI’s future domestic subsidiaries that are borrowers under or guarantee the New Senior Secured Credit Facility. None of ATI’s domestic subsidiaries currently guarantee its obligations under the New Senior Secured Credit Facility, and therefore none of ATI’s domestic subsidiaries currently guarantee the 5.875% Senior Notes. The indenture governing the 5.875% Senior Notes contains negative covenants restricting or limiting the Company’s ability to, among other things: incur or guarantee additional indebtedness, incur liens, pay dividends on, redeem or repurchase the Company’s capital stock, make certain investments, permit payment or dividend restrictions on certain of the Company’s subsidiaries, sell assets, engage in certain transactions with affiliates, and consolidate or merge or sell all or substantially all of the Company’s assets. As of March 31, 2020, the Company was in compliance with all covenants under the indenture governing the 5.875% Senior Notes.

NOTE H. DERIVATIVES

The Company is subject to interest rate risk related to the New Senior Secured Credit Facility and enters into interest rate swaps that are based on LIBOR to manage a portion of this exposure. The interest rate swaps are designated as cash flow hedges that qualify for hedge accounting under the hypothetical derivative method. Fair value adjustments are recorded as a component of accumulated other comprehensive loss (“AOCL”) in the Condensed Consolidated Balance Sheets. Balances in AOCL are reclassified to earnings when transactions related to the underlying risk are settled. During the first quarter of 2019, the Company entered into $250 million of interest rate swaps and designated them as cash flow hedges under the hypothetical derivative method. As of March 31, 2020, the Company held interest rate swaps effective from September 2019 to September 2025 with notional values totaling $250 million and a weighted average LIBOR fixed rate of 3.04%, interest rate swaps effective from September 2019 to September 2022 with notional values totaling $250 million and a weighted average LIBOR fixed rate of 3.01% and interest rate swaps effective from September 2022 to September 2025 with notional values totaling $250 million and a weighted average LIBOR fixed rate of 2.82%. See NOTE F “Fair Value of Financial Instruments” for information regarding the fair value of the Company’s interest rate swaps.

The following tabular disclosures further describe the Company’s interest rate derivatives qualifying and designated for hedge accounting and their impact on the financial condition of the Company (dollars in millions):

		Fair Value
	Balance Sheet Location	March 31, 2020		December 31, 2019
Derivatives designated as hedging instruments:
Interest rate swaps	Other current liabilities	$	12	$	7
	Other non-current liabilities		51		27
Total derivatives designated as hedging instruments		$	63	$	34

The balance of derivative losses recorded in AOCL as of March 31, 2020 was $63 million. See NOTE O “Accumulated Other Comprehensive Loss” for information regarding activity recorded as a component of AOCL during the three months ended March 31, 2020 and 2019. As of March 31, 2020, the Company had $9 million of derivative losses recorded in AOCL expected to be reclassified to earnings within the next twelve months.

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NOTE I. PRODUCT WARRANTY LIABILITIES

As of March 31, 2020, current and non-current product warranty liabilities were $25 million and $26 million, respectively. As of March 31, 2019, current and non-current product warranty liabilities were $27 million and $37 million, respectively.

Product warranty liability activities consist of the following (dollars in millions):

	Three Months Ended March 31,
	2020			2019
Beginning balance	$	52		$	66
Payments		(7	)		(6	)
Increase in liability (warranty issued during period)		5			5
Net adjustments to liability		1			(1	)
Ending balance	$	51		$	64

NOTE J. DEFERRED REVENUE

As of March 31, 2020, current and non-current deferred revenue was $34 million and $106 million, respectively. As of March 31, 2019, current and non-current deferred revenue was $34 million and $97 million, respectively.

Deferred revenue activity consists of the following (dollars in millions):

	Three Months Ended March 31,
	2020			2019
Beginning balance	$	139		$	122
Increases		11			18
Revenue earned		(10	)		(9	)
Ending balance	$	140		$	131

Deferred revenue recorded in current and non-current liabilities related to ETC as of March 31, 2020 was $27 million and $87 million, respectively. Deferred revenue recorded in current and non-current liabilities related to ETC as of March 31, 2019 was $29 million and $74 million, respectively.

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NOTE K. LEASES

Contracts are assessed by the Company to determine if the contract conveys the right to control an identified asset in exchange for consideration during a period of time. The Company classifies all identified leases as operating or finance leases. As of March 31, 2020, the Company was not a party to any finance leases. Contracts that contain leases are assessed to determine if the consideration in the contract is related to a lease component, non-lease component or other components not related to the lease. Lease components are recorded as right-of-use (“ROU”) assets and lease liabilities while any non-lease component is expensed as incurred. The consideration in the contract related to other components not related to the lease is allocated among the lease component and the non-lease component, as applicable, based on the stand-alone selling price of the lease and non-lease components.

Certain lease contracts may contain an option to extend or terminate the lease. The Company considers the economic impact of extension and termination options by contract. If the Company concludes it is reasonably certain an option will be exercised, that option is included in the lease term and impacts the amount recorded as an ROU asset and lease liability upon inception of the contract.

The Company's lease liability is determined by discounting the future cash flows over the lease period. The Company determines its discount rates utilizing current secured financing rates based on the length of the lease period plus the Company's margin over LIBOR on the New Term Loan. The Company believes this rate effectively represents a borrowing rate the Company could obtain on a debt instrument possessing similar terms as the lease. The lease liability is classified between current and non-current liabilities based on the terms of the underlying leases. The weighted average discount rate on operating leases as of both March 31, 2020 and December 31, 2019 was 4.36%.

As of March 31, 2020, the Company recorded current and non-current operating lease liabilities of $5 million and $17 million, respectively. As of December 31, 2019, the Company recorded current and non-current operating lease liabilities of $5 million and $18 million, respectively. The following table reconciles total operating lease liabilities as of March 31, 2020 to future undiscounted cash flows for operating leases:

	March 31, 2020
2020	$	5
2021		4
2022		3
2023		3
2024		2
Thereafter		9
Total lease payments	$	26
Less: Interest		4
Present value of lease liabilities	$	22

ROU assets are calculated as the related lease liability adjusted for lease incentives, prepayments and the effect of escalating lease payments on period expense. The below table depicts the ROU assets held by the Company based on the underlying asset:

	March 31, 2020
Buildings	$	21
Land		1
Vehicles		1
Total right-of-use assets	$	23

The weighted average remaining lease term as of March 31, 2020 and March 31, 2019 was 7.7 years and 5.4 years, respectively.

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Operating lease expense was $1 million for each of the three months ended March 31, 2020 and 2019 and was recorded within Selling, general and administrative expense and Engineering - research and development on the Company's Condensed Consolidated Statements of Comprehensive Income. There was no short-term operating lease expense for the three months ended March 31, 2020 and 2019.

The calculation of the Company's ROU assets and lease liabilities did not include cash consideration as of March 31, 2020 and December 31, 2019. During the three months ended March 31, 2020 and March 31, 2019, the Company recorded $1 million and zero, respectively, of new ROU assets obtained in exchange for lease obligations.

NOTE L. OTHER CURRENT LIABILITIES

Other current liabilities consist of the following (dollars in millions):

	March 31, 2020		December 31, 2019
Accrued interest payable	$	45	$	21
Sales allowances		30		32
Payroll and related costs		29		87
Vendor buyback obligation		16		16
Derivative liabilities		12		7
Taxes payable		11		12
Lease liability		5		5
Vendor liability		3		3
Non-trade payables		2		2
Other accruals		17		17
Total	$	170	$	202

NOTE M. EMPLOYEE BENEFIT PLANS

Components of net periodic benefit cost (credit) consist of the following (dollars in millions):

	Pension Plans						Post-retirement Benefits
	For the Three Months Ended March 31,						For the Three Months Ended March 31,
	2020			2019			2020			2019
Net periodic benefit cost:
Service cost	$	2		$	2		$	—		$	—
Interest cost		2			2			1			1
Expected return on assets		(2	)		(2	)		—			—
Prior service credit		—			—			(3	)		(3	)
Net periodic benefit cost (credit)	$	2		$	2		$	(2	)	$	(2	)

The components of net periodic benefit cost (credit) other than the service cost component are included in Other income, net in the Condensed Consolidated Statements of Comprehensive Income.

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NOTE N. INCOME TAXES

For the three months ended March 31, 2020, the Company recorded total tax expense of $42 million. The effective tax rate for the three months ended March 31, 2020 was 23%. For the three months ended March 31, 2019, the Company recorded total tax expense of $44 million. The effective tax rate for the three months ended March 31, 2019 was 21%.

On March 27, 2020, the Coronavirus Aid, Relief, and Economic Security Act (the “CARES Act”) was signed into law making several changes to the U.S. tax code. The changes include, but are not limited to, increasing the threshold on the amount of deductible interest expense, allowing companies to carryback certain net operating losses, increasing the amount of net operating loss carryforwards that corporations can use to offset taxable income, and making technical changes related to the accounting of qualified improvement property. Some of the tax law changes included in the CARES Act are retroactive. The Company is still evaluating certain of these elections, and the Company’s provision for income taxes for the three months ended March 31, 2020 does not reflect the effect of any of these elections. The effects, both individually and in the aggregate, are not expected to be material at this time.

The need to establish a valuation allowance against the deferred tax assets is assessed periodically based on a more-likely-than-not realization threshold, in accordance with authoritative accounting guidance. Appropriate consideration is given to all positive and negative evidence related to that realization. This assessment considers, among other matters, the nature, frequency and severity of recent losses, forecasts of future profitability, the duration of statutory carry-forward periods, experience with tax attributes expiring unused, and tax planning alternatives. The weight given to these considerations depends upon the degree to which they can be objectively verified.

The Company continues to provide for a valuation allowance on certain of its foreign deferred tax assets and an anticipated capital loss carryforward. The Company has determined, based on the evaluation of both objective and subjective evidence available, that this valuation allowance is necessary and that it is more likely than not that the deferred tax assets are not fully realizable.

In accordance with the FASB’s authoritative guidance on accounting for income taxes, the Company has recorded a liability for unrecognized tax benefits related to a 2010 Research and Development Credit as of March 31, 2020 and December 31, 2019. The accounting guidance prescribes a recognition threshold and measurement attributes for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. The Company's returns will remain subject to examination by the various taxing authorities for the duration of the applicable statute of limitations (generally three years from the later of the date of filing or the due date of the return).

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NOTE O. ACCUMULATED OTHER COMPREHENSIVE LOSS

The following tables reconcile changes in AOCL by component (net of tax, dollars in millions):

	Three months ended
	Pension and OPEB liability adjustment			Available- for-sale securities and interest rate swaps			Foreign currency items			Total
AOCL as of December 31, 2018	$	9		$	(7	)	$	(32	)	$	(30	)
Other comprehensive income before reclassifications		—			(10	)		—			(10	)
Amounts reclassified from AOCL		(3	)		—			—			(3	)
Income tax		1			2			—			3
Reclassification of stranded tax effects		8			(1	)		—			7
Net current period other comprehensive income (loss)	$	6		$	(9	)	$	—		$	(3	)
AOCL as of March 31, 2019	$	15		$	(16	)	$	(32	)	$	(33	)
AOCL as of December 31, 2019	$	8		$	(26	)	$	(34	)	$	(52	)
Other comprehensive loss before reclassifications		—			(29	)		(2	)		(31	)
Amounts reclassified from AOCL		(5	)		—			—			(5	)
Income tax		1			6			—			7
Net current period other comprehensive loss	$	(4	)	$	(23	)	$	(2	)	$	(29	)
AOCL as of March 31, 2020	$	4		$	(49	)	$	(36	)	$	(81	)

The Company reclassified approximately $7 million, as of January 1, 2019, from accumulated other comprehensive loss to retained earnings for the stranded tax effects resulting from the U.S. Tax Cuts and Jobs Act. This reclassification had zero net effect on total stockholders' equity. The Company utilizes the portfolio securities approach when releasing income tax effects from AOCL for its investment securities.

	Amounts reclassified from AOCL
AOCL Components	Three months ended March 31, 2020			Three months ended March 31, 2019			Affected line item in the Condensed Consolidated Statements of Comprehensive Income
Amortization of benefit items:
Prior service cost	$	5		$	3		Other (expense) income, net
Total reclassifications, before tax	$	5		$	3		Income before income taxes
Income tax expense		(1	)		(1	)	Income tax expense
Total reclassifications, net of tax	$	4		$	2

Prior service cost and actuarial loss are included in the computation of the Company’s net periodic benefit cost. See NOTE M, “Employee Benefit Plans” for additional details.

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NOTE P. COMMITMENTS AND CONTINGENCIES

Environmental Matters

The Company has an agreement with the Environmental Protection Agency to perform remedial activities at the Company’s Indianapolis, Indiana manufacturing facilities related to historical soil and groundwater contamination. In the fourth quarter of 2019, the EPA accepted a proposal to reduce the Company’s ongoing responsibilities for operating, monitoring and maintaining the ongoing activities, resulting in the Company reducing its associated undiscounted liability to $3 million to complete the future operating, monitoring and maintenance activities over the next 30 years.

Claims, Disputes, and Litigation

The Company is party to various legal actions and administrative proceedings and subject to various claims arising in the ordinary course of business. These proceedings primarily involve commercial claims, product liability claims, personal injury claims and workers’ compensation claims. The Company believes that the ultimate liability, if any, in excess of amounts already provided for in the condensed consolidated financial statements or covered by insurance on the disposition of these matters will not have a material adverse effect on the financial position, results of operations or cash flows of the Company.

NOTE Q. EARNINGS PER SHARE

The Company presents both basic and diluted earnings per share (“EPS”) amounts. Basic EPS is calculated by dividing net income by the weighted average number of common shares outstanding during the reporting period. Diluted EPS is calculated by dividing net income by the weighted average number of common shares and common equivalent shares outstanding during the reporting period that are calculated using the treasury stock method for stock-based awards. The treasury stock method assumes that the Company uses the proceeds from the exercise of awards to repurchase common stock at the average market price during the period. The assumed proceeds under the treasury stock method include the purchase price that the grantee will pay in the future and compensation cost for future service that the Company has not yet recognized. For the three ended both March 31, 2020 and March 31, 2019, there were no outstanding stock options excluded from the diluted EPS calculation because they were anti-dilutive.

The following table reconciles the numerators and denominators used to calculate basic EPS and diluted EPS (in millions, except per share data):

	Three Months Ended March 31,
	2020		2019
Net income	$	139	$	167
Weighted average shares of common stock outstanding		116		126
Dilutive effect of stock-based awards		—		1
Diluted weighted average shares of common stock outstanding		116		127
Basic earnings per share attributable to common stockholders	$	1.20	$	1.33
Diluted earnings per share attributable to common stockholders	$	1.20	$	1.32

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NOTE R. COMMON STOCK

The Company’s current stock repurchase program (the “Repurchase Program”) was announced on November 14, 2016 when the Board of Directors authorized the Company to repurchase up to $1,000 million of its common stock on the open market or through privately negotiated transactions. On November 8, 2017, July 30, 2018 and May 9, 2019, the Board of Directors authorized the Company to repurchase an additional $500 million, $500 million and $1,000 million, respectively, of its common stock, bringing the total amount authorized under the Repurchase Program to $3,000 million. The Repurchase Program has no termination date. The timing and amount of stock purchases are subject to market conditions and corporate needs. The Repurchase Program may be modified, suspended or discontinued at any time at the Company’s discretion.

During the three months ended March 31, 2020, the Company repurchased approximately $180 million of its common stock under the Repurchase Program, leaving $872 million of authorized repurchases remaining under the Repurchase Program as of March 31, 2020.

NOTE S. CERTAIN RELATIONSHIPS AND RELATED PARTY TRANSACTIONS

On May 7, 2019, the Company entered into a stock repurchase agreement with Ashe Capital Management, LP to repurchase 4,977,043 shares of the Company's common stock for approximately $232 million. William Harker, a member of the Company's Board of Directors until May 9, 2019, is the President and Co-Founder of Ashe Capital Management, LP. The shares were repurchased under the Repurchase Program. The purchase was funded with cash on hand and borrowings under the New Revolving Credit Facility. The shares were subsequently retired.

NOTE T. ACQUISITIONS

Walker Die Casting Acquisition

On September 9, 2019, the Company acquired the assets of Walker Die Casting, Inc. (“Walker Die Casting”), an aluminum castings company, and C&R Tool and Engineering, Inc. (“C&R Tool and Engineering”), a supplier of metal-working tools, for approximately $103 million in cash. The initial accounting is complete for the fair value of the acquired assets and liabilities except for the expected adjustment to the provisional amounts recorded for working capital at the acquisition date. Any further adjustments identified in the measurement period, not to exceed one year from the acquisition date, will be accounted for in accordance with the applicable authoritative guidance.

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ITEM 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following discussion and analysis is intended to help the reader understand our business, financial condition, results of operations, liquidity and capital resources. You should read this discussion in conjunction with our condensed consolidated interim financial statements and the related notes contained elsewhere in this Quarterly Report on Form 10-Q.

The statements in this discussion regarding industry trends, our expectations regarding our future performance, liquidity and capital resources and other non-historical statements are forward-looking statements. These forward-looking statements are subject to numerous risks and uncertainties, including, but not limited to, the risks and uncertainties described in “Cautionary Note Regarding Forward-Looking Statements” and Part II, Item 1A “Risk Factors” below and in Part I, Item 1A "Risk Factors" in our Annual Report on Form 10-K for the year ended December 31, 2019 as filed with the Securities and Exchange Commission ("SEC") on February 27, 2020. Our actual results may differ materially from those contained in or implied by any forward-looking statements.

Overview

Allison Transmission Holdings, Inc. and its subsidiaries (“Allison,” the “Company,” “we,” “us” or “our”) design and manufacture vehicle propulsion solutions, including commercial duty on-highway, off-highway and defense fully automatic transmissions and electric hybrid and fully electric systems. The business was founded in 1915 and has been headquartered in Indianapolis, Indiana since inception. Allison was an operating unit of General Motors Corporation from 1929 until 2007, when Allison once again became a stand-alone company. In March 2012, Allison began trading on the New York Stock Exchange under the symbol “ALSN”.

Although approximately 77% of revenues were generated in North America in 2019, we have a global presence by serving customers in Europe, Asia, South America and Africa. We serve customers through an independent network of approximately 1,500 independent distributor and dealer locations worldwide.

Trends Impacting Our Business

Our net sales are driven by commercial vehicle production, which tends to be highly correlated to macroeconomic conditions. In March 2020, the World Health Organization categorized the novel coronavirus ("COVID-19") as a pandemic, and it continues to spread throughout the United States and other major markets in which we operate across the world. To limit the spread of COVID-19, governments have taken various actions including the issuance of stay-at-home orders and social distancing guidelines. While the majority of our plants are continuing to operate as essential businesses, our manufacturing facilities in Hungary, India, Indianapolis and Tennessee have suspended or cut back on operating levels and shifts as a result of government orders, our inability to obtain component parts from suppliers and/or decreased customer demand, and additional suspensions and cutbacks may occur as the impacts from COVID-19 and related responses continue to develop within our global supply chains and customer base. While not material, we began to see the impact to demand in our results of operations during the first quarter 2020 in Europe and Asia as our suppliers and customers reduced or halted production. Additional production slowdowns and shutdowns by our global suppliers and customers have continued during the second quarter of 2020 and the impact on our financial results is expected to be material for the second quarter 2020. We are taking a variety of measures to maintain operations with as minimal impact as possible to our stakeholders and to promote the safety and security of our employees, including increased frequency of cleaning and disinfecting of facilities, social distancing, remote working when possible, travel restrictions and limitations on visitor access to facilities. We are also working to align operations, programs and spending across our entire business with current conditions, including furloughs of a portion of our workforce, freezing all employee requisitions, reducing overtime, and assessing the timing and cadence of various capital investments and product development initiatives.

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The extent to which our operations will be impacted by the outbreak will depend largely on future developments, which are highly uncertain and cannot be accurately predicted, including the emergence of new information concerning the severity of the outbreak and actions by governmental authorities.

First Quarter Net Sales by End Market (dollars in millions)

End Market	Q1 2020 Net Sales		Q1 2019 Net Sales		% Variance
North America On-Highway	$	352	$	377		(7	)%
North America Off-Highway		8		14		(43	)%
Defense		40		32		25	%
Outside North America On-Highway		72		94		(23	)%
Outside North America Off-Highway		27		27		—
Service Parts, Support Equipment and Other		138		131		5	%
Total Net Sales	$	637	$	675		(6	)%

North America On-Highway end market net sales were down 7% for the first quarter 2020 compared to the first quarter 2019, principally driven by lower demand for Rugged Duty Series models.

North America Off-Highway end market net sales were down $6 million for the first quarter 2020 compared to the first quarter 2019, principally driven by lower demand for hydraulic fracturing applications.

Defense end market net sales were up 25% for the first quarter 2020 compared to the first quarter 2019, principally driven by higher Tracked vehicle demand.

Outside North America On-Highway end market net sales were down 23% for the first quarter 2020 compared to the first quarter 2019, principally driven by lower demand in Europe and Asia.

Outside North America Off-Highway end market net sales were flat for the first quarter 2020 compared to the first quarter 2019, principally driven by higher demand in the energy sector, offset by lower demand in the mining and construction sectors.

Service Parts, Support Equipment and Other end market net sales were up 5% for the first quarter 2020 compared to the first quarter 2019, principally driven by aluminum die casting component volume associated with the Walker Die Casting acquisition, partially offset by lower demand for North America Off-Highway service parts.

Key Components of our Results of Operations

Net sales

We generate our net sales primarily from the sale of vehicle propulsion solutions, service and component parts, support equipment, defense kits, engineering services, royalties and extended transmission coverage to a wide array of OEMs, distributors and the U.S. government. Sales are recorded net of provisions for customer allowances and other rebates. Engineering services are recorded as net sales in accordance with the terms of the contract. The associated costs are recorded in cost of sales. We also have royalty agreements with third parties that provide net sales as a result of joint efforts in developing marketable products.

Cost of sales

Our primary components of cost of sales are purchased parts, the overhead expense related to our manufacturing operations and direct labor associated with the manufacture and assembly of transmissions and parts. For the three months ended March 31, 2020, direct material costs were approximately 68%, overhead costs were approximately 23%, and direct labor costs were approximately 9% of total cost of sales. We are subject to changes in our cost of sales caused by movements in underlying commodity prices. We seek to hedge against this risk by using long-term agreements, as appropriate. See Part I, Item 3 “Quantitative and Qualitative Disclosures about Market Risk—Commodity Price Risk” included below.

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Selling, general and administrative

The principal components of our selling, general and administrative expenses are salaries and benefits for our office personnel, advertising and promotional expenses, product warranty expense, expenses relating to certain information technology systems and amortization of our intangibles.

Engineering — research and development

We incur costs in connection with research and development programs that are expected to contribute to future earnings. Such costs are expensed as incurred.

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Non-GAAP Financial Measures

We use Adjusted Earnings before Interest, Taxes, Depreciation, and Amortization (“EBITDA”) and Adjusted EBITDA as a percent of net sales to measure our operating profitability. We believe that Adjusted EBITDA and Adjusted EBITDA as a percent of net sales provide management, investors and creditors with useful measures of the operational results of our business and increase the period-to-period comparability of our operating profitability and comparability with other companies. Adjusted EBITDA as a percent of net sales is also used in the calculation of management’s incentive compensation program. The most directly comparable U.S. generally accepted accounting principles (“GAAP”) measure to Adjusted EBITDA and Adjusted EBITDA as a percent of net sales is Net income and Net income as a percent of net sales, respectively. Adjusted EBITDA is calculated as earnings before interest expense, income tax expense, amortization of intangible assets, depreciation of property, plant and equipment and other adjustments as defined by the Second Amended and Restated Credit Agreement dated as of March 29, 2019 (the “Credit Agreement”) governing Allison Transmission, Inc.’s (“ATI”), our wholly-owned subsidiary, term loan facility in the amount of $643 million due March 2026 (“New Term Loan”). Adjusted EBITDA as a percent of net sales is calculated as Adjusted EBITDA divided by net sales.

We use Adjusted free cash flow to evaluate the amount of cash generated by our business that, after the capital investment needed to maintain and grow our business and certain mandatory debt service requirements, can be used for repayment of debt, stockholder distributions and strategic opportunities, including investing in our business. We believe that Adjusted free cash flow enhances the understanding of the cash flows of our business for management, investors and creditors. Adjusted free cash flow is also used in the calculation of management’s incentive compensation program. The most directly comparable GAAP measure to Adjusted free cash flow is Net cash provided by operating activities. Adjusted free cash flow is calculated as Net cash provided by operating activities after additions of long-lived assets.

The following is a reconciliation of Net income and Net income as a percent of net sales to Adjusted EBITDA and Adjusted EBITDA as a percent of net sales and a reconciliation of Net cash provided by operating activities to Adjusted free cash flow:

	Three months ended March 31,
(unaudited, dollars in millions)	2020			2019
Net income (GAAP)	$	139		$	167
plus:
Income tax expense		42			44
Interest expense, net		33			36
Depreciation of property, plant and equipment		22			18
Amortization of intangible assets		16			22
Stock-based compensation expense (a)		3			3
Unrealized loss (gain) on foreign exchange (b)		2			(1	)
Expenses related to long-term debt refinancing (c)		—			1
Adjusted EBITDA (Non-GAAP)	$	257		$	290
Net sales (GAAP)	$	637		$	675
Net income as a percent of net sales (GAAP)		21.8	%		24.7	%
Adjusted EBITDA as a percent of net sales (Non-GAAP)		40.3	%		43.0	%
Net cash provided by operating activities (GAAP)	$	148		$	194
Deductions to reconcile to Adjusted free cash flow:
Additions of long-lived assets		(21	)		(19	)
Adjusted free cash flow (Non-GAAP)	$	127		$	175

(a) Represents stock-based compensation expense (recorded in Cost of sales, Selling, general and administrative, and Engineering - research and development).

(b) Represents losses (gains) (recorded in Other (expense) income, net) on intercompany financing transactions related to investments in plant assets for our India facility.

(c) Represents expenses (recorded in Other (expense) income, net) related to the refinancing of the prior term loan due 2022 and prior revolving credit facility due 2021 in the first quarter of 2019.

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Results of Operations

Comparison of three months ended March 31, 2020 and 2019

While the recent outbreak of COVID-19 did not have a material adverse effect on our reported results for the first quarter 2020, we are actively monitoring the impact of the global pandemic, which we expect to materially negatively impact our business and results of operations for the second quarter 2020 and likely beyond. See “Trends Impacting our Business” above for additional information on the impact of COVID-19 on our results of operations.

The following table sets forth certain financial information for the three months ended March 31, 2020 and 2019. The following table and discussion should be read in conjunction with the information contained in our condensed consolidated financial statements and the notes thereto included in Part I, Item 1 of this Quarterly Report on Form 10-Q.

	Three Months Ended March 31,
(unaudited, dollars in millions)	2020			% of net sales			2019			% of net sales
Net sales	$	637			100	%	$	675			100	%
Cost of sales		311			49			316			47
Gross profit		326			51			359			53
Operating expenses:
Selling, general and administrative		75			12			84			12
Engineering — research and development		36			6			31			5
Total operating expenses		111			18			115			17
Operating income		215			33			244			36
Interest expense, net		(33	)		(5	)		(36	)		(5	)
Other (expense) income, net		(1	)		—			3			—
Income before income taxes		181			28			211			31
Income tax expense		(42	)		(6	)		(44	)		(6	)
Net income	$	139			22	%	$	167			25	%

Net sales

Net sales for the quarter ended March 31, 2020 were $637 million compared to $675 million for the quarter ended March 31, 2019, a decrease of 6%. The decrease was principally driven by a $25 million, or 7%, decrease in net sales in the North America On-Highway end market principally driven by lower demand for Rugged Duty Series models, a $22 million, or 23%, decrease in net sales in the Outside North America On-Highway end market principally driven by lower demand in Europe and Asia and a $6 million, or 43%, decrease in net sales in the North America Off-Highway end market principally driven by lower demand for hydraulic fracturing applications, partially offset by an $8 million, or 25%, increase in net sales in the Defense end market principally driven by higher Tracked vehicle demand and a $7 million, or 5%, increase in net sales in the Service Parts, Support Equipment and Other end market principally driven by aluminum die casting component volume associated with the Walker Die Casting acquisition partially offset by lower demand for North America Off-Highway service parts.

Cost of sales

Cost of sales for the quarter ended March 31, 2020 was $311 million compared to $316 million for the quarter ended March 31, 2019, a decrease of 2%. The decrease was principally driven by decreased direct material expense commensurate with decreased net sales and favorable material costs.

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Gross profit

Gross profit for the quarter ended March 31, 2020 was $326 million compared to $359 million for the quarter ended March 31, 2019, a decrease of 9%. The decrease was principally driven by $38 million related to decreased net sales, partially offset by $6 million of lower material costs. Gross profit as a percent of net sales for the three months ended March 31, 2020 decreased 200 basis points compared to the same period in 2019 principally driven by lower net sales and unfavorable mix, partially offset by favorable material costs.

Selling, general and administrative

Selling, general and administrative expenses for the quarter ended March 31, 2020 were $75 million compared to $84 million for the quarter ended March 31, 2019, a decrease of 11%. The decrease was principally driven by $8 million of lower incentive compensation expense and $6 million of lower intangible amortization expense.

Engineering — research and development

Engineering expenses for the quarter ended March 31, 2020 were $36 million compared to $31 million for the quarter ended March 31, 2019, an increase of 16%. The increase was principally driven by the timing of product initiatives spending.

Interest expense, net

Interest expense, net for the quarter ended March 31, 2020 was $33 million compared to $36 million for the quarter ended March 31, 2019, a decrease of 8%. The decrease was principally driven by $5 million of expenses related to the long-term debt refinancing in 2019 that did not recur in 2020.

Other (expense) income, net

Other (expense) income, net for the quarter ended March 31, 2020 was ($1) million compared to $3 million for the quarter ended March 31, 2019. The change was principally driven by $3 million of unfavorable foreign exchange on intercompany financing and $3 million of unfavorable change associated with assets held in a rabbi trust, partially offset by $1 million of expenses related to long-term debt refinancing in 2019 which did not recur in 2020.

Income tax expense

Income tax expense for the three months ended March 31, 2020 was $42 million, resulting in an effective tax rate of 23%, compared to $44 million of income tax expense and an effective tax rate of 21% for the three months ended March 31, 2019. The decrease in income tax expense was principally driven by decreased taxable income.

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Liquidity and Capital Resources

We generate cash primarily from our operations to fund our operating, investing and financing activities. Our principal uses of cash are operating expenses, capital expenditures, working capital needs, debt service, dividends on common stock, stock repurchases and strategic growth initiatives, including acquisitions. Our ability to generate cash in the future and our future uses of cash are subject to general economic, financial, competitive, legislative, regulatory and other factors that may be beyond our control, including the impact to our cash flow that has been experienced, and continues to be experienced, related to COVID-19. We had total available cash and cash equivalents of $114 million and $192 million as of March 31, 2020 and December 31, 2019, respectively. Of the available cash and cash equivalents, $114 million and $122 million were deposited in operating accounts as of March 31, 2020 and December 31, 2019, respectively, while zero and $70 million were invested in U.S. government backed securities as of March 31, 2020 and December 31, 2019, respectively.

As of March 31, 2020, the total of cash and cash equivalents held by foreign subsidiaries was $92 million, the majority of which was located in China and Europe. We manage our worldwide cash requirements considering available funds among the subsidiaries through which we conduct our business and the cost effectiveness with which those funds can be accessed. As a result, we do not currently anticipate any local liquidity restrictions will preclude us from funding our targeted initiatives or operating needs with local resources.

We have not recognized any deferred tax liabilities associated with earnings in foreign subsidiaries, except for our subsidiary located in China, as they are intended to be permanently reinvested and used to support foreign operations or have no associated tax requirements. We have recorded a deferred tax liability of $3 million for the tax liability associated with the remittance of previously taxed income and unremitted earnings for our subsidiary located in China. The U.S. Tax Cuts and Jobs Act requirement of a one-time repatriation tax on foreign earnings and profits resulted in us recording a $6 million liability for the deemed repatriation to be paid to the U.S. Government in 2017. In the future, the U.S. Tax Cuts and Jobs Act provides for tax free repatriations of earnings and profits generated by foreign subsidiaries through a 100% dividends received deduction. The remaining deferred tax liabilities, if recorded, related to unremitted earnings that are indefinitely reinvested are not material.

Our liquidity requirements are significant, primarily due to our debt service requirements. As of March 31, 2020, we had $643 million of indebtedness associated with ATI’s New Term Loan, $1,000 million of indebtedness associated with ATI’s 5.0% Senior Notes due September 2024 (“5.0% Senior Notes”), $400 million of indebtedness associated with ATI’s 4.75% Senior Notes due October 2027 (“4.75% Senior Notes”) and $500 million of indebtedness associated with ATI’s 5.875% Senior Notes due June 2029 (“5.875% Senior Notes” and, together with the 5.0% Senior Notes and 4.75% Senior Notes, the “Senior Notes”). The minimum required quarterly principal payment on ATI’s New Term Loan through its maturity date of March 2026 is $2 million. We made $2 million and zero principal payments on the New Senior Secured Credit Facility during the three months ended March 31, 2020 and March 31, 2019, respectively. There are no required quarterly principal payments on ATI’s Senior Notes.

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The New Senior Secured Credit Facility provides for a $600 million New Revolving Credit Facility, net of an allowance for up to $75 million in outstanding letter of credit commitments. Throughout the three months ended March 31, 2020, we made periodic withdrawals and payments on the New Revolving Credit Facility as part of our debt management plans. The maximum amount outstanding at any time during the quarter ended March 31, 2020 was $300 million. As of March 31, 2020, we had $595 million available under the New Revolving Credit Facility, net of $5 million in letters of credit. As of March 31, 2020, we had no amounts outstanding under the New Revolving Credit Facility. If we have commitments outstanding on the New Revolving Credit Facility at the end of a fiscal quarter, the New Senior Secured Credit Facility requires us to maintain a specified maximum first lien net leverage ratio of 5.50x. Additionally, within the terms of the New Senior Secured Credit Facility, a first lien net leverage ratio at or below 4.00x results in the elimination of excess cash flow payments on the New Senior Secured Credit Facility for the applicable year. As of March 31, 2020, our first lien net leverage ratio was 0.50x. The New Senior Secured Credit Facility also provides certain financial incentives based on our first lien net leverage ratio. A first lien net leverage ratio at or below 4.00x and above 3.50x results in a 25 basis point reduction to the applicable margin on the New Revolving Credit Facility. A first lien net leverage ratio at or below 3.50x results in an additional 25 basis point reduction to the applicable margin on the New Revolving Credit Facility. These reductions remain in effect as long as we achieve a first lien net leverage ratio at or below the related threshold.

In addition, the Credit Agreement includes, among other things, customary restrictions (subject to certain exceptions) on our ability to incur certain indebtedness, grant certain liens, make certain investments, engage in acquisitions, consolidations and mergers, declare or pay certain dividends, and repurchase shares of our common stock. The indentures governing the Senior Notes contain negative covenants restricting or limiting our ability to, among other things, incur or guarantee additional indebtedness, incur liens, pay dividends on, redeem or repurchase our capital stock, make certain investments, permit payment or dividend restrictions on certain of our subsidiaries, sell assets, engage in certain transactions with affiliates, and consolidate or merge or sell all or substantially all of our assets. As of March 31, 2020, we are in compliance with all covenants under the New Senior Secured Credit Facility and indentures governing the Senior Notes.

Our credit ratings are reviewed by Moody’s Investors Service (“Moody’s”) and Fitch Ratings (“Fitch”). Moody’s rates our corporate credit at ‘Ba2’, New Term Loan at ‘Baa3’, 5.0% Senior Notes at ‘Ba3’, 4.75% Senior Notes at ‘Ba3’ and 5.875% Senior Notes at 'Ba3'. Fitch rates our corporate credit at ‘BB’, New Term Loan at ‘BB+’, 5.0% Senior Notes at ‘BB’, 4.75% Senior Notes at ‘BB’ and 5.875% Senior Notes at 'BB'.

On November 14, 2016, our Board of Directors authorized us to repurchase up to $1,000 million of our common stock pursuant to a stock repurchase program (the "Repurchase Program"). On November 8, 2017, July 30, 2018 and May 9, 2019, our Board of Directors increased the authorization by $500 million, $500 million and $1,000 million, respectively, bringing the total amount authorized under the Repurchase Program to $3,000 million. During the three months ended March 31, 2020, we repurchased approximately $180 million of our common stock under the Repurchase Program. All of the repurchase transactions during the three months ended March 31, 2020 were settled in cash during the same period. As of March 31, 2020, we had approximately $872 million available under the Repurchase Program.

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The following table shows our sources and uses of funds for the three months ended March 31, 2020 and 2019 (in millions):

	Three Months Ended March 31,
Statements of Cash Flows Data	2020			2019
Cash flows provided by operating activities	$	148		$	194
Cash flows used for investing activities	$	(21	)	$	(19	)
Cash flows used for financing activities	$	(203	)	$	(83	)

Generally, cash provided by operating activities has been adequate to fund our operations. As we cannot predict the duration or scope of the COVID-19 pandemic and its impact on our customers and suppliers, the negative financial impact to our cash provided by operating activities could be material. We are actively managing the business to maintain cash flow, and we have significant liquidity, including $595 million available under the New Revolving Credit Facility as of March 31, 2020. At this time, we believe these actions along with cash provided by operating activities, cash and cash equivalents and borrowing capacity under the New Senior Secured Credit Facility will be sufficient to meet our cash requirements for the next twelve months.

Cash provided by operating activities

Operating activities for the three months ended March 31, 2020 generated $148 million of cash compared to $194 million for the three months ended March 31, 2019. The decrease was principally driven by lower gross profit and increased product initiatives spending, partially offset by lower cash interest expense.

Cash used for investing activities

Investing activities for the three months ended March 31, 2020 used $21 million of cash compared to $19 million for the three months ended March 31, 2019. The increase was principally driven a $2 million increase in capital expenditures principally driven by increased spending related to investments in productivity and replacement programs and engineering and testing capabilities.

Cash used for financing activities

Financing activities for the three months ended March 31, 2020 used $203 million of cash compared to $83 million for the three months ended March 31, 2019. The increase was principally driven by $130 million of increased stock repurchases, partially offset by $10 million of long-term debt restructuring payments in 2019 that did not recur in 2020.

Contingencies

We are a party to various legal actions and administrative proceedings and subject to various claims arising in the ordinary course of business, including those relating to commercial transactions, product liability, personal injury and workers’ compensation, safety, health, taxes, environmental and other matters. For more information, see NOTE P, “Commitments and Contingencies” of our condensed consolidated financial statements included in Part I, Item 1 of this Quarterly Report on Form 10-Q.

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Critical Accounting Policies and Significant Accounting Estimates

A discussion of our critical accounting policies and significant accounting estimates is included in Part II, Item 7 “Management’s Discussion and Analysis” in our Annual Report on Form 10-K for the year ended December 31, 2019 as filed with the Securities and Exchange Commission on February 27, 2020. The preparation of the condensed consolidated financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the reported amounts of some assets and liabilities and, in some instances, the reported amounts of revenues and expenses during the applicable reporting period. Actual results could differ materially from these estimates. Changes in estimates are recorded in results of operations in the period that the events or circumstances giving rise to such changes occur. Within the context of these critical accounting estimates, we are not currently aware of any reasonably likely events or circumstances that would result in different policies or estimates being reported for the three months ended March 31, 2020.

Off-Balance Sheet Arrangements

We are not a party to any off-balance sheet arrangements.

Recently Issued Accounting Pronouncements

See NOTE B, “Summary of Significant Accounting Policies” in Part I, Item 1, of this Quarterly Report on Form 10-Q.

Cautionary Note Regarding Forward-Looking Statements

This Quarterly Report on Form 10-Q contains forward-looking statements. The words “believe,” “expect,” “anticipate,” “intend,” “estimate” and other expressions that are predictions of or indicate future events and trends and that do not relate to historical matters identify forward-looking statements. You should not place undue reliance on these forward-looking statements. Although forward-looking statements reflect management’s good faith beliefs, reliance should not be placed on forward-looking statements because they involve known and unknown risks, uncertainties and other factors, which may cause actual results, performance or achievements to differ materially from anticipated future results, performance or achievements expressed or implied by such forward-looking statements. Forward-looking statements speak only as of the date the statements are made. We undertake no obligation to publicly update or revise any forward-looking statement, whether as a result of new information, future events, changed circumstances or otherwise. These forward-looking statements are subject to numerous risks and uncertainties, including, but not limited to: the duration and spread of the COVID-19 outbreak, mitigating efforts deployed by government agencies and the public at large, and the overall impact from such outbreak on economic conditions, financial market volatility and our business, including but not limited to the operations of our manufacturing and other facilities, our supply chain, our distribution processes and demand for our products; risks related to our substantial indebtedness; our participation in markets that are competitive; the highly cyclical industries in which certain of our end users operate; uncertainty in the global regulatory and business environments in which we operate; our ability to prepare for, respond to and successfully achieve our objectives relating to technological and market developments, competitive threats and changing customer needs, including with respect to electric hybrid and fully electric commercial vehicles; our ability to identify, consummate and effectively integrate acquisitions; the concentration of our net sales in our top five customers and the loss of any one of these; increases in cost, disruption of supply or shortage of raw materials or components used in our products; the failure of markets outside North America to increase adoption of fully automatic transmissions; the success of our research and development efforts, the outcome of which is uncertain; U.S. and foreign defense spending; risks associated with our international operations, including increased trade protectionism; general economic and industry conditions; the discovery of defects in our products, resulting in delays in new model launches, recall campaigns and/or increased warranty costs and reduction in future sales or damage to our brand and reputation; labor strikes, work stoppages or similar labor disputes, which could significantly disrupt our operations or those of our principal customers; and our intention to pay dividends and repurchase shares of our common stock.

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Important factors that could cause actual results to differ materially from our expectations are disclosed in Part I, Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2019 as filed with the Securities and Exchange Commission on February 27, 2020 and Part II, Item 1A of this Quarterly Report on Form 10-Q. All written and oral forward-looking statements attributable to us, or persons acting on our behalf, are expressly qualified in their entirety by these cautionary statements as well as other cautionary statements that are made from time to time in our public communications. You should evaluate all forward-looking statements made in this Quarterly Report on Form 10-Q in the context of these risks and uncertainties.

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ITEM 3. Quantitative and Qualitative Disclosures About Market Risk

Our exposure to market risk consists of changes in interest rates, foreign currency rate fluctuations and movements in commodity prices.

Interest Rate Risk

We are subject to interest rate market risk in connection with a portion of our long-term debt. Our principal interest rate exposure relates to outstanding amounts under our New Senior Secured Credit Facility. Our New Senior Secured Credit Facility provides for variable rate borrowings of up to $1,238 million, including $595 million under our New Revolving Credit Facility, net of $5 million of letters of credit. A one-eighth percent increase or decrease in assumed interest rates for the New Senior Secured Credit Facility, if fully drawn, as of March 31, 2020 would have an impact of approximately $1 million on interest expense per year. As of March 31, 2020, we had no outstanding borrowings against the New Revolving Credit Facility.

From time to time, we enter into interest rate swap agreements to hedge the risk associated with our variable interest rate debt. During the first quarter of 2019, we entered into $250 million of interest rate swaps and designated them as cash flow hedges under the hypothetical derivative method. As of March 31, 2020, we held interest rate swaps effective from (i) September 2019 to September 2022 with notional values totaling $250 million and a weighted average LIBOR fixed rate of 3.01%, (ii) September 2019 to September 2025 with notional values totaling $250 million and a weighted average LIBOR fixed rate of 3.04% and (iii) September 2022 to September 2025 with notional values totaling $250 million and a weighted average LIBOR fixed rate of 2.82%.

Exchange Rate Risk

While our net sales and costs are denominated primarily in U.S. Dollars, net sales, costs, assets and liabilities are generated in other currencies including Brazilian Real, British Pound, Canadian Dollar, Chinese Yuan Renminbi, Euro, Hungarian Forint, Indian Rupee and Japanese Yen. 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.

Assuming current levels of foreign currency transactions, a 10% aggregate increase or decrease in the Japanese Yen, Euro, Indian Rupee and Chinese Yuan Renminbi would correspondingly change our earnings, net of tax, by an estimated $4 million per year. We believe our other exposure to foreign currencies is immaterial.

Commodity Price Risk

We are subject to changes in our cost of sales caused by movements in underlying commodity prices. Approximately 70% of our cost of sales consists of purchased components with significant raw material content. A substantial portion of the purchased parts are made of aluminum and steel. The cost of aluminum parts includes an adjustment factor on future purchases for fluctuations in aluminum prices based on accepted industry indices. In addition, a substantial amount of steel-based contracts also include an index-based component. As our costs change, we are able to pass through a portion of the changes in commodity prices to certain of our customers according to our long-term agreements (“LTAs”). We historically have not entered into long-term purchase contracts related to the purchase of aluminum and steel.

Assuming current levels of commodity purchases, a 10% variation in the price of aluminum and steel would correspondingly change our earnings by approximately $4 million and $6 million per year, respectively.

Many of our LTAs have incorporated a cost-sharing arrangement related to potential future commodity price fluctuations. For purposes of the sensitivity analysis above, the impact of these cost sharing arrangements has not been included.

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ITEM 4. Controls and Procedures

Evaluation of Disclosure Controls and Procedures

Our management, with the participation of our Chief Executive Officer and Chief Financial Officer, evaluated the effectiveness of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”)) as of the end of the period covered by this report. In designing and evaluating the disclosure controls and procedures, management recognized that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives. In addition, the design of disclosure controls and procedures must reflect the fact that there are resource constraints and that management is required to apply its judgment in evaluating the benefits of possible controls and procedures relative to their costs.

Based on the evaluation, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures as of the end of the period covered by this Quarterly Report on Form 10-Q were effective to provide reasonable assurance that information we are required to disclose in reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission rules and forms, and that such information is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure.

Changes in Internal Control over Financial Reporting

There were no changes in our internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) during the period covered by this Quarterly Report on Form 10-Q that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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PART II. OTHER INFORMATION

Item 1. Legal Proceedings

From time to time, we are a party to various legal actions in the normal course of our business, including those related to commercial transactions, product liability, personal injury and workers’ compensation, safety, health, taxes, environmental and other matters. See NOTE P, “Commitments and Contingencies” in the notes to the condensed consolidated financial statements included in Part I, Item 1 of this Quarterly Report on Form 10-Q.

Item 1A. Risk Factors

Except as set forth below, there have been no material changes from our risk factors as previously reported in Part I, Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2019 as filed with the Securities and Exchange Commission on February 27, 2020.

The following risk factor has been added:

Our financial condition and results of operations are expected to be materially adversely affected by the coronavirus pandemic.

The global spread of the novel strain of coronavirus (COVID-19) that has been declared a pandemic by the World Health Organization and the preventative measures taken to contain or mitigate the outbreak have caused, and are continuing to cause, significant volatility and uncertainty and economic disruptions. The outbreak has resulted in governments around the world implementing increasingly stringent measures to contain or mitigate the spread of the virus, including quarantines, “shelter in place” and “stay at home” orders, travel restrictions, business curtailments and other measures. While we continue to operate certain of our plants consistent with applicable government guidelines, we are experiencing, and may continue to experience, production slowdowns and/or shutdowns at our manufacturing facilities in Hungary, India, Indianapolis and Tennessee as a result of government orders, our inability to obtain component parts from suppliers and/or decreased customer demand. In addition, many of our suppliers and customers are also experiencing, and may continue to experience, production slowdowns and/or shutdowns, which may further impact our business, sales and results of operation.  

The extent to which COVID-19 may adversely impact our business depends on future developments, which are highly uncertain and unpredictable, depending upon the severity and duration of the outbreak and the effectiveness of actions taken globally to contain or mitigate its effects. Any resulting financial impact cannot be estimated reasonably at this time, but may materially adversely affect our business, supply chain, sales, results of operations, financial condition and cash flows. Even after the COVID-19 pandemic has subsided, we may experience materially adverse impacts to our business due to any resulting economic recession or depression that may continue to impact customer demand and the financial instability or operating viability of our suppliers and customers. Additionally, concerns over the economic impact of COVID-19 have caused extreme volatility in financial and other capital markets which may adversely impact our ability to access capital markets.

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The following risk factors included in our Annual Report on Form 10-K for the year ended December 31, 2019 have been updated:

Volatility in and disruption to the global economic environment and changes in the regulatory and business environments in which we operate may have a material adverse effect on our business, results of operations and financial condition.

The commercial vehicle industry as a whole has been more adversely affected by volatile economic conditions than many other industries, as the purchase or replacement of commercial vehicles, which are durable items, can be deferred for many reasons, including reduced spending by end users. Future changes in the regulatory and business environments in which we operate, including increased trade protectionism and tariffs, may adversely affect our ability to sell our products or source materials needed to manufacture our products. Furthermore, financial instability or bankruptcy at any of our suppliers or customers could disrupt our ability to manufacture our products and impair our ability to collect receivables, any or all of which may have a material adverse effect on our business, results of operations and financial condition. In addition, some of our customers and suppliers may experience serious cash flow problems and, thus, may find it difficult to obtain financing, if financing is available at all. The COVID-19 pandemic is currently causing financial instability and bankruptcy at certain of our suppliers and customers, which may cause our customers’ need for and ability to purchase our products or services to decrease, and our suppliers to increase their prices, reduce their output or change their terms of sale. Any inability of customers to pay us for our products and services, or any demands by suppliers for different payment terms, may materially and adversely affect our results of operations and financial condition. Furthermore, our suppliers may not be successful in generating sufficient sales, restarting or ramping up production or securing alternate financing arrangements, and therefore may no longer be able to supply goods and services to us. In that event, we would need to find alternate sources for these goods and services, and there is no assurance we would be able to find such alternate sources on favorable terms, if at all. Any such disruption in our supply chain could adversely affect our ability to manufacture and deliver our products on a timely basis, and thereby affect our results of operations.

38

Increases in cost, disruption of supply or shortage of raw materials or components used in our products could harm our business and profitability.

Our products contain various raw materials, including corrosion-resistant steel, non-ferrous metals such as aluminum and nickel, and precious metals such as platinum and palladium. We use raw materials directly in manufacturing and in components that we purchase from our suppliers. We generally purchase components with significant raw material content on the open market. The prices for these raw materials fluctuate depending on market conditions. Volatility in the prices of raw materials such as steel, aluminum and nickel could increase the cost of manufacturing our products. We may not be able to pass on these costs to our customers, and this could have a material adverse effect on our business, results of operations and financial condition. Even in the event that increased costs can be passed through to customers, our gross margin percentages would decline. Additionally, our suppliers are also subject to fluctuations in the prices of raw materials and may attempt to pass all or a portion of such increases on to us. In the event they are successful in doing so, our margins would decline.

In 2019, approximately 75% of our total spending on components was sourced from approximately 40 suppliers, some of which are the single source for such components. All of the suppliers from which we purchase materials and components used in our business are fully validated suppliers, meaning the suppliers’ manufacturing processes and inputs have been validated under a production part approval process (“PPAP”). Furthermore, there are only a limited number of suppliers for certain of the materials used in our business, such as corrosion-resistant steel. As a result, our business is subject to the risk of additional price fluctuations and periodic delays in the delivery of our materials or components if supplies from a validated supplier are interrupted and a new supplier, if one is available, must be validated or materials and components must be purchased from a supplier without a completed PPAP, which could increase our risk of purchasing non-conforming components. Any such price fluctuations or delays, if significant, could harm our profitability or operations. In addition, the loss of a supplier could result in significant material cost increases or reduce our production capacity. We also cannot guarantee we will be able to maintain favorable arrangements and relationships with these suppliers. An increase in the cost or a sustained interruption in the supply or shortage of some of these raw materials or components that may be caused by a deterioration of our relationships with suppliers or by events such as natural disasters, power outages, labor strikes, public health crisis such as pandemics and epidemics or the like could negatively impact our business, results of operations and financial condition.  We are currently experiencing sustained interruption in the supply of certain components due to production slowdowns or shutdowns implemented by many of our suppliers as a result of the COVID-19 pandemic, the duration of which is currently unknown and could have a material adverse effect on our business and results of operations. Although we have agreements with many of our customers that we will pass any price increases through to them, such contracts may be canceled by our customers and/or we may not be able to recoup the costs of such price increases. Additionally, if we are unable to continue to purchase our required quantities of raw materials on commercially reasonable terms, or at all, if we are unable to maintain or enter into purchasing contracts for commodities, or if delivery of materials from suppliers is delayed or non-conforming, our operations could be disrupted or our profitability could be adversely impacted.

39

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

The following table sets forth information related to our repurchases of our common stock on a monthly basis in the three months ended March 31, 2020:

	Total Number of Shares Purchased		Average Price Paid per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs(1)		Approximate Dollar Value of Shares that May Yet Be Purchased Under Plans(1)
January 1– January 31, 2020		334,548	$	47.15		334,548	$	1,036,242,381
February 1 – February 29, 2020		318,241	$	45.45		318,241	$	1,022,097,944
March 1 – March 31, 2020		4,443,061	$	33.76		4,443,061	$	872,097,961
Total		5,095,850	$	35.31		5,095,850

(1) These values reflect repurchases made under the Repurchase Program approved by the Board of Directors on November 14, 2016 and the increases approved by the Board of Directors on November 8, 2017, July 30, 2018 and May 9, 2019 which, in the aggregate, authorized total repurchases of $3,000 million. The Repurchase Program has no termination date.

40

Item 6. Exhibits

(a) Exhibits

Exhibit Number	Description
31.1	Certification of Chief Executive Officer pursuant to Rule 13a-14(a)/15d-14(a) as adopted pursuant to Section  302 of the Sarbanes-Oxley Act of 2002 (filed herewith)
31.2	Certification of Chief Financial Officer pursuant to Rule 13a-14(a)/15d-14(a) as adopted pursuant to Section  302 of the Sarbanes-Oxley Act of 2002 (filed herewith)
32.1	Certification of Periodic Report by 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 (filed herewith)
101	The following financial information from the Registrant’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2020, formatted in  Inline XBRL (eXtensible Business Reporting Language): (i) the Condensed Consolidated Balance Sheets; (ii) the Condensed Consolidated Statements of Comprehensive Income; (iii) the Condensed Consolidated Statements of Cash Flows; (iv) the Condensed Consolidated Statements of Stockholders’ Equity; and (v) the Notes to Condensed Consolidated Financial Statements
104	Cover Page Interactive Data File – The cover page from the Registrant’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2020, formatted in Inline XBRL and contained in Exhibit 101

41

SIGNATURES

Pursuant to the requirements 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.

		ALLISON TRANSMISSION HOLDINGS, INC.
Date: May 5, 2020	By:	/s/ David S. Graziosi
		Name:	David S. Graziosi
		Title:	President and Chief Executive Officer (Principal Executive Officer)
Date: May 5, 2020	By:	/s/ G. Frederick Bohley
		Name:	G. Frederick Bohley
		Title:	Senior Vice President, Chief Financial Officer and Treasurer (Principal Financial Officer and Principal Accounting Officer)

42

EX-31.1

CERTIFICATION PURSUANT TO RULE 13a-14(a)/15d-14(a) OF THE SECURITIES

EXCHANGE ACT OF 1934, AS ADOPTED PURSUANT TO SECTION 302 OF THE

SARBANES-OXLEY ACT OF 2002

I, David S. Graziosi, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Allison Transmission 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 (the registrant's fourth fiscal quarter in the case of an annual report) 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.

Dated: May 5, 2020

/s/ David S. Graziosi

Name:  David S. Graziosi

Title:    President and Chief Executive Officer

(Principal Executive Officer)

EX-31.2

CERTIFICATION PURSUANT TO RULE 13a-14(a)/15d-14(a) OF THE SECURITIES

EXCHANGE ACT OF 1934, AS ADOPTED PURSUANT TO SECTION 302 OF THE

SARBANES-OXLEY ACT OF 2002

I, G. Frederick Bohley, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Allison Transmission 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 (the registrant's fourth fiscal quarter in the case of an annual report) 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.

Dated: May 5, 2020

/s/ G. Frederick Bohley

Name: G. Frederick Bohley

Title:   Senior Vice President, Chief Financial Officer and Treasurer

(Principal Financial Officer)

EX-32.1

CERTIFICATION 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 Quarterly Report of Allison Transmission Holdings, Inc. (the “Company”) on Form 10-Q for the quarter ending March 31, 2020 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), we, David S. Graziosi, President and Chief Executive Officer of the Company, and G. Frederick Bohley, Senior Vice President, Chief Financial Officer and Treasurer of the Company, certify, pursuant to 18 U.S.C. § 1350 as adopted pursuant to § 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 Company.

Dated: May 5, 2020

/s/ David S. Graziosi

David S. Graziosi

President and Chief Executive Officer

(Principal Executive Officer)

Dated: May 5, 2020

/s/ G. Frederick Bohley

G. Frederick Bohley

Senior Vice President, Chief Financial Officer and Treasurer

(Principal Financial Officer)

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Commitments and Contingencies

3 Months Ended

Mar. 31, 2020

Commitments And Contingencies Disclosure [Abstract]

Commitments and Contingencies

NOTE P. COMMITMENTS AND CONTINGENCIES

Environmental Matters

The Company has an agreement with the Environmental Protection Agency to perform remedial activities at the Company’s Indianapolis, Indiana manufacturing facilities related to historical soil and groundwater contamination. In the fourth quarter of 2019, the EPA accepted a proposal to reduce the Company’s ongoing responsibilities for operating, monitoring and maintaining the ongoing activities, resulting in the Company reducing its associated undiscounted liability to $3 million to complete the future operating, monitoring and maintenance activities over the next 30 years.

Claims, Disputes, and Litigation

The Company is party to various legal actions and administrative proceedings and subject to various claims arising in the ordinary course of business. These proceedings primarily involve commercial claims, product liability claims, personal injury claims and workers’ compensation claims. The Company believes that the ultimate liability, if any, in excess of amounts already provided for in the condensed consolidated financial statements or covered by insurance on the disposition of these matters will not have a material adverse effect on the financial position, results of operations or cash flows of the Company.

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Acquisitions

3 Months Ended

Mar. 31, 2020

Business Combinations [Abstract]

Acquisitions

NOTE T. ACQUISITIONS

Walker Die Casting Acquisition

On September 9, 2019, the Company acquired the assets of Walker Die Casting, Inc. (“Walker Die Casting”), an aluminum castings company, and C&R Tool and Engineering, Inc. (“C&R Tool and Engineering”), a supplier of metal-working tools, for approximately $103 million in cash. The initial accounting is complete for the fair value of the acquired assets and liabilities except for the expected adjustment to the provisional amounts recorded for working capital at the acquisition date. Any further adjustments identified in the measurement period, not to exceed one year from the acquisition date, will be accounted for in accordance with the applicable authoritative guidance.

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Product Warranty Liabilities - Product Warranty Liability Activities (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Guarantees [Abstract]
Beginning balance	$ 52	$ 66
Payments	(7)	(6)
Increase in liability (warranty issued during period)	5	5
Net adjustments to liability	1	(1)
Ending balance	$ 51	$ 64

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Leases - Schedule of Lease Maturity, Current Guidance (Details) $ in Millions	Mar. 31, 2020 USD ($)
Leases [Abstract]
2020	$ 5
2021	4
2022	3
2023	3
2024	2
Thereafter	9
Total lease payments	26
Less: Interest	4
Present value of lease liabilities	$ 22

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Income Taxes - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Tax Disclosure [Abstract]
Income tax expense	$ 42	$ 44
Effective tax rate	23.00%	21.00%

XML

Goodwill and Other Intangible Assets - Schedule of Amortization Expense Related to Other Intangible Assets for Next Five Fiscal Years (Details) $ in Millions	Mar. 31, 2020 USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
2021	$ 46
2022	45
2023	43
2024	8
2025	$ 4

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Revenue - Disaggregated Revenue by Categories (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Disaggregation of Revenue [Line Items]
Total Net Sales	$ 637	$ 675
North America On-Highway
Disaggregation of Revenue [Line Items]
Total Net Sales	352	377
North America Off-Highway
Disaggregation of Revenue [Line Items]
Total Net Sales	8	14
Defense
Disaggregation of Revenue [Line Items]
Total Net Sales	40	32
Outside North America On-Highway
Disaggregation of Revenue [Line Items]
Total Net Sales	72	94
Outside North America Off-Highway
Disaggregation of Revenue [Line Items]
Total Net Sales	27	27
Service Parts, Support Equipment and Other
Disaggregation of Revenue [Line Items]
Total Net Sales	$ 138	$ 131

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Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net sales	$ 637	$ 675
Cost of sales	311	316
Gross profit	326	359
Selling, general and administrative	75	84
Engineering — research and development	36	31
Operating income	215	244
Interest expense, net	(33)	(36)
Other (expense) income, net	(1)	3
Income before income taxes	181	211
Income tax expense	(42)	(44)
Net income	$ 139	$ 167
Basic earnings per share attributable to common stockholders (USD per share)	$ 1.20	$ 1.33
Diluted earnings per share attributable to common stockholders (USD per share)	$ 1.20	$ 1.32
Comprehensive income, net of tax	$ 110	$ 164

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Common Stock - Additional Information (Details) - 2016 Repurchase Program - USD ($)	3 Months Ended
	Mar. 31, 2020	May 09, 2019	Jul. 30, 2018	Nov. 08, 2017	Nov. 14, 2016
Common Stock Disclosure [Line Items]
Stock repurchase program, authorized amount		$ 3,000,000,000			$ 1,000,000,000
Stock repurchase program, increase in authorized amount		$ 1,000,000,000	$ 500,000,000	$ 500,000,000
Common stock, repurchased during the period	$ 180,000,000
Stock repurchase program, remaining amount	$ 872,000,000

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Summary of Significant Accounting Policies

3 Months Ended

Mar. 31, 2020

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

NOTE B. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation and Principles of Consolidation

The condensed consolidated financial statements have been prepared in accordance with accounting principles for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, the condensed consolidated financial statements do not include all information and footnotes required by accounting principles generally accepted in the United States of America (“GAAP”) for complete financial statements. The information herein reflects all normal recurring material adjustments, which are, in the opinion of management, necessary for the fair statement of the results for the periods presented. The condensed consolidated financial statements herein consist of all wholly-owned domestic and foreign subsidiaries with all significant intercompany transactions eliminated.

These condensed consolidated financial statements present the financial position, results of comprehensive income, cash flows and statements of equity of the Company. The condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements included in the Company’s Form 10-K for the year ended December 31, 2019 as filed with the Securities and Exchange Commission on February 27, 2020. The interim period financial results for the three month period presented is not necessarily indicative of results to be expected for any other interim period or for the entire year.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities and the reported amounts of revenue and expenses. Estimates include, but are not limited to, sales allowances, government price adjustments, fair market values and future cash flows associated with goodwill, indefinite life intangibles, definite life intangibles, long-lived asset impairment tests, useful lives for depreciation and amortization, warranty liabilities, environmental liabilities, determination of discount and other assumptions for pension and other post-retirement benefit expense, determination of discount rate and period for leases, income taxes and deferred tax valuation allowances, derivative valuation, assumptions for business combinations and contingencies. The Company’s accounting policies involve the application of judgments and assumptions made by management that include inherent risks and uncertainties. Due to the speed with which the COVID-19 situation is developing, actual results could differ materially from the estimates and assumptions used in preparation of the financial statements including, but not limited to, future cash flows associated with goodwill, indefinite life intangibles, definite life intangibles, long-lived impairment tests, determination of discount and other assumptions for pension and other post-retirement benefit expense and income taxes. Changes in estimates are recorded in results of operations in the period that the events or circumstances giving rise to such changes occur.

Recently Adopted Accounting Pronouncements

In June 2016, the Financial Accounting Standards Board (“FASB”) issued authoritative accounting guidance on the presentation of financial assets at the net amount expected to be collected, which guidance has subsequently been amended. The guidance also requires the disclosure of financing receivables disaggregated by the year of origination. The Company adopted this guidance using a modified retrospective approach effective January 1, 2020. The adoption of this guidance did not have a material impact on the Company's condensed consolidated financial statements.

In August 2018, the FASB issued authoritative accounting guidance amending disclosure requirements for certain assets subject to fair value measurement. The guidance allows the Company to reduce the amount of disclosure on transfers between Level 1 and Level 2 assets. The Company adopted this guidance effective January 1, 2020. The adoption of this guidance did not have a material impact on the Company's condensed consolidated financial statements.

In August 2018, the FASB issued authoritative accounting guidance on accounting for implementation costs in hosting arrangements to align these costs with existing guidance for internally developed software. The stage of implementation must be assessed to determine if costs should be capitalized or expensed, and capitalized costs should be expensed during the noncancellable term of the agreement. The Company adopted this guidance on a prospective basis effective January 1, 2020. The adoption of this guidance did not have a material impact on the Company's condensed consolidated financial statements.

Recently Issued Accounting Pronouncements

In August 2018, the FASB issued authoritative accounting guidance amending disclosure requirements for the Company's defined benefit pension plans and other postretirement benefit plan. The guidance will be effective for the Company in 2021, and the Company does not plan to early adopt. Management is currently identifying and evaluating the impact of this guidance on the Company's disclosures and condensed consolidated financial statements.

In December 2019, the FASB issued authoritative accounting guidance to simplify the accounting for income taxes. The guidance identifies specific exceptions to be removed from the calculation and reporting of income taxes. The guidance will be effective for the Company in 2021, and the Company does not plan to early adopt. Management is currently evaluating the impact of this guidance on the Company's condensed consolidated financial statements.

In March 2020, the FASB issued authoritative accounting guidance regarding highly effective cash flow hedges affected by reference rate reform. The guidance allows the Company to continue to classify its interest rate hedges as highly effective subsequent to reference rate reform under certain circumstances. The guidance may be adopted in any interim period between March 2020 and December 2020, with the amendments applied prospectively. Management is currently evaluating the impact of this guidance on the Company's condensed consolidated financial statements.

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Accumulated Other Comprehensive Loss - Amounts reclassified from AOCL (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other income, net	$ (1)	$ 3
Income before income taxes	181	211
Income tax expense	(42)	(44)
Net income	139	167
Reclassified from AOCL | Prior service cost
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other income, net	5	3
Reclassified from AOCL | Pension and OPEB liability adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Income before income taxes	5	3
Income tax expense	(1)	(1)
Net income	$ 4	$ 2

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Debt - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Debt Instrument [Line Items]
Long-term debt	$ 2,543	$ 2,544
Fair value of long-term debt obligations	2,397
Senior Notes, Fixed 5.0%, Due 2024
Debt Instrument [Line Items]
Long-term debt	$ 1,000	$ 1,000
Debt instrument, stated interest rate	5.00%	5.00%
Debt instrument, maturity month and year	2024-09
Senior Notes, Fixed 4.75%, Due 2027
Debt Instrument [Line Items]
Long-term debt	$ 400	$ 400
Debt instrument, stated interest rate	4.75%	4.75%
Debt instrument, maturity month and year	2027-10
Senior Notes, Fixed 5.875%, Due 2029
Debt Instrument [Line Items]
Long-term debt	$ 500	$ 500
Debt instrument, stated interest rate	5.875%	5.875%
Debt instrument, maturity month and year	2029-06
Senior Secured Credit Facility Term Loan, Variable, Due 2026
Debt Instrument [Line Items]
Long-term debt	$ 643	$ 644
Debt instrument, maturity month and year	2026-03
New Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt			$ 50
Debt instrument, maturity month and year	2024-09
Credit facility, commitments amount	$ 600

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Debt - 5.875% Senior Notes - Additional Information (Details) - USD ($)	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Debt Instrument [Line Items]
Deferred financing fees	$ 25,000,000	$ 26,000,000
Senior Notes, Fixed 5.875%, Due 2029
Debt Instrument [Line Items]
Debt instrument, stated interest rate	5.875%	5.875%
Face amount			$ 500,000,000
Deferred financing fees	$ 6,000,000

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Other Current Liabilities (Tables)

3 Months Ended

Mar. 31, 2020

Other Liabilities Disclosure [Abstract]

Summary of Other Current Liabilities

Other current liabilities consist of the following (dollars in millions):

	March 31, 2020		December 31, 2019
Accrued interest payable	$	45	$	21
Sales allowances		30		32
Payroll and related costs		29		87
Vendor buyback obligation		16		16
Derivative liabilities		12		7
Taxes payable		11		12
Lease liability		5		5
Vendor liability		3		3
Non-trade payables		2		2
Other accruals		17		17
Total	$	170	$	202

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Derivatives (Tables)

3 Months Ended

Mar. 31, 2020

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Derivative Instruments and their Impact on Financial Condition

The following tabular disclosures further describe the Company’s interest rate derivatives qualifying and designated for hedge accounting and their impact on the financial condition of the Company (dollars in millions):

		Fair Value
	Balance Sheet Location	March 31, 2020		December 31, 2019
Derivatives designated as hedging instruments:
Interest rate swaps	Other current liabilities	$	12	$	7
	Other non-current liabilities		51		27
Total derivatives designated as hedging instruments		$	63	$	34

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Inventories

3 Months Ended

Mar. 31, 2020

Inventory Disclosure [Abstract]

Inventories

NOTE D. INVENTORIES

Inventories consisted of the following components (dollars in millions):

	March 31, 2020		December 31, 2019
Purchased parts and raw materials	$	103	$	91
Work in progress		22		17
Service parts		52		60
Finished goods		30		31
Total inventories	$	207	$	199

Inventory components shipped to third parties, primarily cores, parts to re-manufacturers, and parts to contract manufacturers, which the Company has an obligation to buy back, are included in purchased parts and raw materials, with an offsetting liability in Other current liabilities. See NOTE L, “Other Current Liabilities” for more information.

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Derivatives

3 Months Ended

Mar. 31, 2020

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Derivatives

NOTE H. DERIVATIVES

The Company is subject to interest rate risk related to the New Senior Secured Credit Facility and enters into interest rate swaps that are based on LIBOR to manage a portion of this exposure. The interest rate swaps are designated as cash flow hedges that qualify for hedge accounting under the hypothetical derivative method. Fair value adjustments are recorded as a component of accumulated other comprehensive loss (“AOCL”) in the Condensed Consolidated Balance Sheets. Balances in AOCL are reclassified to earnings when transactions related to the underlying risk are settled. During the first quarter of 2019, the Company entered into $250 million of interest rate swaps and designated them as cash flow hedges under the hypothetical derivative method. As of March 31, 2020, the Company held interest rate swaps effective from September 2019 to September 2025 with notional values totaling $250 million and a weighted average LIBOR fixed rate of 3.04%, interest rate swaps effective from September 2019 to September 2022 with notional values totaling $250 million and a weighted average LIBOR fixed rate of 3.01% and interest rate swaps effective from September 2022 to September 2025 with notional values totaling $250 million and a weighted average LIBOR fixed rate of 2.82%. See NOTE F “Fair Value of Financial Instruments” for information regarding the fair value of the Company’s interest rate swaps.

The following tabular disclosures further describe the Company’s interest rate derivatives qualifying and designated for hedge accounting and their impact on the financial condition of the Company (dollars in millions):

		Fair Value
	Balance Sheet Location	March 31, 2020		December 31, 2019
Derivatives designated as hedging instruments:
Interest rate swaps	Other current liabilities	$	12	$	7
	Other non-current liabilities		51		27
Total derivatives designated as hedging instruments		$	63	$	34

The balance of derivative losses recorded in AOCL as of March 31, 2020 was $63 million. See NOTE O “Accumulated Other Comprehensive Loss” for information regarding activity recorded as a component of AOCL during the three months ended March 31, 2020 and 2019. As of March 31, 2020, the Company had $9 million of derivative losses recorded in AOCL expected to be reclassified to earnings within the next twelve months.

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Other Current Liabilities

3 Months Ended

Mar. 31, 2020

Other Liabilities Disclosure [Abstract]

Other Current Liabilities

NOTE L. OTHER CURRENT LIABILITIES

Other current liabilities consist of the following (dollars in millions):

	March 31, 2020		December 31, 2019
Accrued interest payable	$	45	$	21
Sales allowances		30		32
Payroll and related costs		29		87
Vendor buyback obligation		16		16
Derivative liabilities		12		7
Taxes payable		11		12
Lease liability		5		5
Vendor liability		3		3
Non-trade payables		2		2
Other accruals		17		17
Total	$	170	$	202

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Earnings Per Share - Schedule of Reconciliation of Numerators and Denominators Used to Calculate Basic EPS and Diluted EPS (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Earnings Per Share [Abstract]
Net income	$ 139	$ 167
Weighted average shares of common stock outstanding	116	126
Dilutive effect of stock-based awards	0	1
Diluted weighted average shares of common stock outstanding	116	127
Basic earnings per share attributable to common stockholders (USD per share)	$ 1.20	$ 1.33
Diluted earnings per share attributable to common stockholders (USD per share)	$ 1.20	$ 1.32

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Revenue

3 Months Ended

Mar. 31, 2020

Revenue From Contract With Customer [Abstract]

Revenue

NOTE C. REVENUE

Revenue is recognized as each distinct performance obligation within a contract is satisfied. A performance obligation is a promise in a contract to transfer a distinct good or service to the customer. The Company enters into long-term agreements (“LTAs”) and distributor agreements with certain customers. The LTAs and distributor agreements do not include committed volumes until underlying purchase orders are issued; therefore, the Company determined that purchase orders are the contract with a customer. A contract’s transaction price is allocated to each distinct performance obligation and recognized as revenue when the performance obligation is satisfied, as there is no right of return.

Some of the Company's contracts include multiple performance obligations, most commonly the sale of both a transmission and Extended Transmission Coverage ("ETC"). The Company allocates the contract’s transaction price to each performance obligation based on the standalone selling price of each distinct good or service in the contract.

The Company may also use volume based discounts and rebates as marketing incentives in the sales of both transmissions and service parts, which are accounted for as variable consideration. The Company records the impact of the incentives as a reduction to revenue when it is determined that the adjustment is not likely to reverse, historically on a quarterly basis. The Company estimates the impact of all other incentives based on the related sales and market conditions in the end market vocation. The Company recorded no adjustments based on variable consideration during the three months ended March 31, 2020 and 2019.

Net sales are made on credit terms, generally 30 days, based on an assessment of the customer’s creditworthiness. For certain goods or services, the Company receives consideration prior to satisfying the related performance obligation. Such consideration is recorded as a contract liability in current and non-current Deferred revenue as of March 31, 2020 and December 31, 2019. See Note J, “Deferred Revenue” for more information including the amount of revenue earned during the three months ended March 31, 2020 and 2019 that had been previously deferred. The Company had no contract assets as of March 31, 2020 and December 31, 2019.

The following presents disaggregated revenue by categories that best depict how the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors (dollars in millions):

	Three Months Ended March 31,
	2020		2019
North America On-Highway	$	352	$	377
North America Off-Highway		8		14
Defense		40		32
Outside North America On-Highway		72		94
Outside North America Off-Highway		27		27
Service Parts, Support Equipment and Other		138		131
Total Net Sales	$	637	$	675

NOTE J. DEFERRED REVENUE

As of March 31, 2020, current and non-current deferred revenue was $34 million and $106 million, respectively. As of March 31, 2019, current and non-current deferred revenue was $34 million and $97 million, respectively.

Deferred revenue activity consists of the following (dollars in millions):

	Three Months Ended March 31,
	2020			2019
Beginning balance	$	139		$	122
Increases		11			18
Revenue earned		(10	)		(9	)
Ending balance	$	140		$	131

Deferred revenue recorded in current and non-current liabilities related to ETC as of March 31, 2020 was $27 million and $87 million, respectively. Deferred revenue recorded in current and non-current liabilities related to ETC as of March 31, 2019 was $29 million and $74 million, respectively.

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Accumulated Other Comprehensive Loss - Additional Information (Details) - USD ($) $ in Millions		3 Months Ended
	Jan. 01, 2019	Mar. 31, 2019
Equity [Abstract]
Reclassification of stranded tax effects	$ 7	$ 7

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Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 139	$ 167
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred income taxes	35	13
Depreciation of property, plant and equipment	22	18
Amortization of intangible assets	16	22
Stock-based compensation	3	3
Amortization of deferred financing costs	1	1
Expenses related to long-term debt refinancing	0	5
Other	3	(1)
Changes in assets and liabilities:
Accounts receivable	(51)	(54)
Inventories	(9)	(18)
Accounts payable	21	34
Other assets and liabilities	(32)	4
Net cash provided by operating activities	148	194
CASH FLOWS FROM INVESTING ACTIVITIES:
Additions of long-lived assets	(21)	(19)
Net cash used for investing activities	(21)	(19)
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings on revolving credit facility	300	0
Payments on revolving credit facility	(300)	0
Repurchases of common stock	(180)	(50)
Dividend payments	(20)	(19)
Payments on long-term debt	(2)	(1,148)
Taxes paid related to net share settlement of equity awards	(2)	(4)
Proceeds from exercise of stock options	1	0
Issuance of long-term debt	0	1,148
Debt financing fees	0	(10)
Net cash used for financing activities	(203)	(83)
Effect of exchange rate changes on cash	(2)	1
Net (decrease) increase in cash and cash equivalents	(78)	93
Cash and cash equivalents at beginning of period	192	231
Cash and cash equivalents at end of period	114	324
Supplemental disclosures:
Interest paid	8	14
Income taxes paid	$ 6	$ 6

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Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2020	Apr. 15, 2020
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2020
Entity File Number	001-35456
Document Transition Report	false
Entity Registrant Name	ALLISON TRANSMISSION HOLDINGS, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	26-0414014
Entity Address, Address Line One	One Allison Way
Entity Address, City or Town	Indianapolis
Entity Address, State or Province	IN
Entity Address, Postal Zip Code	46222
City Area Code	317
Local Phone Number	242-5000
Title of 12(b) Security	Common stock, $0.01 par value
Trading Symbol	ALSN
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		113,176,677
Entity Central Index Key	0001411207
Current Fiscal Year End Date	--12-31
Amendment Flag	false
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1

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Debt - New Senior Secured Credit Facility - Additional Information (Details) - USD ($)	1 Months Ended	3 Months Ended
	Oct. 31, 2019	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Debt Instrument [Line Items]
Long-term debt		$ 2,543,000,000		$ 2,544,000,000
Deferred financing fees		$ 25,000,000		$ 26,000,000
Prior Term Loan
Debt Instrument [Line Items]
Long-term debt			$ 500,000,000
Debt instrument, due date		2022
Prior Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt			550,000,000
Debt instrument, due date		2021
New Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt			50,000,000
Debt instrument extended, due date		2024
Debt instrument, maturity month and year		2024-09
Credit facility, commitments amount		$ 600,000,000
Borrowing capacity at any time		300,000,000
Available revolving credit facility		$ 595,000,000
Commitment fee percentage		0.25%
Amount outstanding		$ 0
Achieved senior secured leverage ratio		0.50
New Revolving Credit Facility | Letter of Credit
Debt Instrument [Line Items]
Credit facility, commitments amount		$ 75,000,000
Available revolving credit facility		$ 5,000,000
New Revolving Credit Facility | LIBOR
Debt Instrument [Line Items]
Applicable margin over base rate		1.25%
New Revolving Credit Facility | LIBOR | First Lien Net Leverage Ratio is Above 4.00x
Debt Instrument [Line Items]
Applicable margin over base rate		1.75%
New Revolving Credit Facility | LIBOR | First Lien Net Leverage Ratio is Equal to or Less Than 4.00x and above 3.50x
Debt Instrument [Line Items]
Applicable margin over base rate		1.50%
New Revolving Credit Facility | LIBOR | First Lien Net Leverage Ratio is Equal to or Below 3.50x
Debt Instrument [Line Items]
Applicable margin over base rate		1.25%
New Revolving Credit Facility | Base Rate | First Lien Net Leverage Ratio is Above 4.00x
Debt Instrument [Line Items]
Applicable margin over base rate		0.75%
New Revolving Credit Facility | Base Rate | First Lien Net Leverage Ratio is Equal to or Less Than 4.00x and above 3.50x
Debt Instrument [Line Items]
Applicable margin over base rate		0.50%
New Revolving Credit Facility | Base Rate | First Lien Net Leverage Ratio is Equal to or Below 3.50x
Debt Instrument [Line Items]
Applicable margin over base rate		0.25%
New Revolving Credit Facility | Minimum | First Lien Net Leverage Ratio is Above 4.00x
Debt Instrument [Line Items]
Net leverage ratio		4.00
New Senior Secured Credit Facility
Debt Instrument [Line Items]
Debt instrument, due date		2022
Debt instrument extended, due date		2026
Deferred financing fees			5,000,000
Debt issuance expense			1,000,000
Required senior secured leverage ratio		5.50
Net leverage ratio		4.00
New Senior Secured Credit Facility | Minimum | First Lien Net Leverage Ratio is Equal to or Less Than 4.00x and above 3.50x
Debt Instrument [Line Items]
Net leverage ratio		3.50
New Senior Secured Credit Facility | Maximum | First Lien Net Leverage Ratio is Equal to or Less Than 4.00x and above 3.50x
Debt Instrument [Line Items]
Net leverage ratio		4.00
New Senior Secured Credit Facility | Maximum | First Lien Net Leverage Ratio is Equal to or Below 3.50x
Debt Instrument [Line Items]
Net leverage ratio		3.50
Prior Senior Secured Credit Facility
Debt Instrument [Line Items]
Deferred financing fees			$ 5,000,000
New Term Loan
Debt Instrument [Line Items]
Applicable margin over base rate	0.25%
Debt instrument effective interest rate		2.67%
Debt instrument, maturity month and year		2026-03
Principal payments on term loans		$ 2,000,000
New Term Loan | LIBOR
Debt Instrument [Line Items]
Applicable margin over base rate		1.00%
New Term Loan | Base Rate
Debt Instrument [Line Items]
Applicable margin over base rate		0.50%
New Term Loan | Minimum | LIBOR
Debt Instrument [Line Items]
Applicable margin over base rate		1.75%
New Term Loan | Minimum | Base Rate
Debt Instrument [Line Items]
Applicable margin over base rate		0.75%
Floor rate		1.00%

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Derivatives - Additional Information (Details) - USD ($)	Mar. 31, 2020	Mar. 31, 2019
Derivative [Line Items]
Notional amount		$ 250,000,000
Accumulated other comprehensive income (loss), be Reclassified During Next 12 Months	$ 9,000,000
Interest Rate Swaps A
Derivative [Line Items]
Notional amount	250,000,000
Interest Rate Swaps B
Derivative [Line Items]
Notional amount	250,000,000
Interest Rate Swap C
Derivative [Line Items]
Notional amount	250,000,000
Available-for-sale securities and interest rate swaps
Derivative [Line Items]
Accumulated other comprehensive loss, net of tax	$ (63,000,000)
LIBOR | Interest Rate Swaps A
Derivative [Line Items]
Fixed interest rate	3.04%
LIBOR | Interest Rate Swaps B
Derivative [Line Items]
Fixed interest rate	3.01%
LIBOR | Interest Rate Swap C
Derivative [Line Items]
Fixed interest rate	2.82%

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Leases (Tables)

3 Months Ended

Mar. 31, 2020

Leases [Abstract]

Schedule of Lease Maturity, Current Guidance

The following table reconciles total operating lease liabilities as of March 31, 2020 to future undiscounted cash flows for operating leases:

	March 31, 2020
2020	$	5
2021		4
2022		3
2023		3
2024		2
Thereafter		9
Total lease payments	$	26
Less: Interest		4
Present value of lease liabilities	$	22

Schedule of Right of Use Assets

The below table depicts the ROU assets held by the Company based on the underlying asset:

	March 31, 2020
Buildings	$	21
Land		1
Vehicles		1
Total right-of-use assets	$	23

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Debt (Tables)

3 Months Ended

Mar. 31, 2020

Debt Disclosure [Abstract]

Summary of Long-Term Debt and Maturities

Long-term debt and maturities are as follows (dollars in millions):

	March 31, 2020		December 31, 2019
Long-term debt:
Senior Notes, fixed 5.0%, due 2024	$	1,000	$	1,000
Senior Secured Credit Facility Term Loan, variable, due 2026		643		644
Senior Notes, fixed 4.75%, due 2027		400		400
Senior Notes, fixed 5.875%, due 2029		500		500
Total long-term debt	$	2,543	$	2,544
Less: current maturities of long-term debt		6		6
deferred financing costs, net		25		26
Total long-term debt, net	$	2,512	$	2,512

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Employee Benefit Plans

3 Months Ended

Mar. 31, 2020

Compensation And Retirement Disclosure [Abstract]

Employee Benefit Plans

NOTE M. EMPLOYEE BENEFIT PLANS

Components of net periodic benefit cost (credit) consist of the following (dollars in millions):

	Pension Plans						Post-retirement Benefits
	For the Three Months Ended March 31,						For the Three Months Ended March 31,
	2020			2019			2020			2019
Net periodic benefit cost:
Service cost	$	2		$	2		$	—		$	—
Interest cost		2			2			1			1
Expected return on assets		(2	)		(2	)		—			—
Prior service credit		—			—			(3	)		(3	)
Net periodic benefit cost (credit)	$	2		$	2		$	(2	)	$	(2	)

The components of net periodic benefit cost (credit) other than the service cost component are included in Other income, net in the Condensed Consolidated Statements of Comprehensive Income.

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Goodwill and Other Intangible Assets

3 Months Ended

Mar. 31, 2020

Goodwill And Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

NOTE E. GOODWILL AND OTHER INTANGIBLE ASSETS

As of March 31, 2020 and December 31, 2019, the carrying amount of the Company’s Goodwill was $2,041 million.

The following presents a summary of other intangible assets (dollars in millions):

	March 31, 2020							December 31, 2019
	Intangible assets, gross		Accumulated amortization			Intangible assets, net		Intangible assets, gross		Accumulated amortization			Intangible assets, net
Other intangible assets:
Trade name	$	791	$	—		$	791	$	791	$	—		$	791
In process research and development		50		—			50		50		—			50
Customer relationships — commercial		839		(675	)		164		839		(664	)		175
Proprietary technology		481		(477	)		4		481		(473	)		8
Customer relationships — defense		62		(45	)		17		62		(44	)		18
Total	$	2,223	$	(1,197	)	$	1,026	$	2,223	$	(1,181	)	$	1,042

As of March 31, 2020 and December 31, 2019, the net carrying value of the Company’s Goodwill and other intangible assets, net was $3,067 million and $3,083 million, respectively.

Amortization expense related to other intangible assets for the next five fiscal years is expected to be (dollars in millions):

	2021		2022		2023		2024		2025
Amortization expense	$	46	$	45	$	43	$	8	$	4

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Product Warranty Liabilities

3 Months Ended

Mar. 31, 2020

Guarantees And Product Warranties [Abstract]

Product Warranty Liabilities

NOTE I. PRODUCT WARRANTY LIABILITIES

As of March 31, 2020, current and non-current product warranty liabilities were $25 million and $26 million, respectively. As of March 31, 2019, current and non-current product warranty liabilities were $27 million and $37 million, respectively.

Product warranty liability activities consist of the following (dollars in millions):

	Three Months Ended March 31,
	2020			2019
Beginning balance	$	52		$	66
Payments		(7	)		(6	)
Increase in liability (warranty issued during period)		5			5
Net adjustments to liability		1			(1	)
Ending balance	$	51		$	64

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Earnings Per Share

3 Months Ended

Mar. 31, 2020

Earnings Per Share [Abstract]

Earnings Per Share

NOTE Q. EARNINGS PER SHARE

The Company presents both basic and diluted earnings per share (“EPS”) amounts. Basic EPS is calculated by dividing net income by the weighted average number of common shares outstanding during the reporting period. Diluted EPS is calculated by dividing net income by the weighted average number of common shares and common equivalent shares outstanding during the reporting period that are calculated using the treasury stock method for stock-based awards. The treasury stock method assumes that the Company uses the proceeds from the exercise of awards to repurchase common stock at the average market price during the period. The assumed proceeds under the treasury stock method include the purchase price that the grantee will pay in the future and compensation cost for future service that the Company has not yet recognized. For the three ended both March 31, 2020 and March 31, 2019, there were no outstanding stock options excluded from the diluted EPS calculation because they were anti-dilutive.

The following table reconciles the numerators and denominators used to calculate basic EPS and diluted EPS (in millions, except per share data):

	Three Months Ended March 31,
	2020		2019
Net income	$	139	$	167
Weighted average shares of common stock outstanding		116		126
Dilutive effect of stock-based awards		—		1
Diluted weighted average shares of common stock outstanding		116		127
Basic earnings per share attributable to common stockholders	$	1.20	$	1.33
Diluted earnings per share attributable to common stockholders	$	1.20	$	1.32

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Summary of Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2020

Accounting Policies [Abstract]

Basis of Presentation and Principles of Consolidation

Basis of Presentation and Principles of Consolidation

The condensed consolidated financial statements have been prepared in accordance with accounting principles for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, the condensed consolidated financial statements do not include all information and footnotes required by accounting principles generally accepted in the United States of America (“GAAP”) for complete financial statements. The information herein reflects all normal recurring material adjustments, which are, in the opinion of management, necessary for the fair statement of the results for the periods presented. The condensed consolidated financial statements herein consist of all wholly-owned domestic and foreign subsidiaries with all significant intercompany transactions eliminated.

These condensed consolidated financial statements present the financial position, results of comprehensive income, cash flows and statements of equity of the Company. The condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements included in the Company’s Form 10-K for the year ended December 31, 2019 as filed with the Securities and Exchange Commission on February 27, 2020. The interim period financial results for the three month period presented is not necessarily indicative of results to be expected for any other interim period or for the entire year.

Use of Estimates

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities and the reported amounts of revenue and expenses. Estimates include, but are not limited to, sales allowances, government price adjustments, fair market values and future cash flows associated with goodwill, indefinite life intangibles, definite life intangibles, long-lived asset impairment tests, useful lives for depreciation and amortization, warranty liabilities, environmental liabilities, determination of discount and other assumptions for pension and other post-retirement benefit expense, determination of discount rate and period for leases, income taxes and deferred tax valuation allowances, derivative valuation, assumptions for business combinations and contingencies. The Company’s accounting policies involve the application of judgments and assumptions made by management that include inherent risks and uncertainties. Due to the speed with which the COVID-19 situation is developing, actual results could differ materially from the estimates and assumptions used in preparation of the financial statements including, but not limited to, future cash flows associated with goodwill, indefinite life intangibles, definite life intangibles, long-lived impairment tests, determination of discount and other assumptions for pension and other post-retirement benefit expense and income taxes. Changes in estimates are recorded in results of operations in the period that the events or circumstances giving rise to such changes occur.

Recently Adopted Accounting Pronouncements and Recently Issued Accounting Pronouncements

Recently Adopted Accounting Pronouncements

In June 2016, the Financial Accounting Standards Board (“FASB”) issued authoritative accounting guidance on the presentation of financial assets at the net amount expected to be collected, which guidance has subsequently been amended. The guidance also requires the disclosure of financing receivables disaggregated by the year of origination. The Company adopted this guidance using a modified retrospective approach effective January 1, 2020. The adoption of this guidance did not have a material impact on the Company's condensed consolidated financial statements.

In August 2018, the FASB issued authoritative accounting guidance amending disclosure requirements for certain assets subject to fair value measurement. The guidance allows the Company to reduce the amount of disclosure on transfers between Level 1 and Level 2 assets. The Company adopted this guidance effective January 1, 2020. The adoption of this guidance did not have a material impact on the Company's condensed consolidated financial statements.

In August 2018, the FASB issued authoritative accounting guidance on accounting for implementation costs in hosting arrangements to align these costs with existing guidance for internally developed software. The stage of implementation must be assessed to determine if costs should be capitalized or expensed, and capitalized costs should be expensed during the noncancellable term of the agreement. The Company adopted this guidance on a prospective basis effective January 1, 2020. The adoption of this guidance did not have a material impact on the Company's condensed consolidated financial statements.

Recently Issued Accounting Pronouncements

In August 2018, the FASB issued authoritative accounting guidance amending disclosure requirements for the Company's defined benefit pension plans and other postretirement benefit plan. The guidance will be effective for the Company in 2021, and the Company does not plan to early adopt. Management is currently identifying and evaluating the impact of this guidance on the Company's disclosures and condensed consolidated financial statements.

In December 2019, the FASB issued authoritative accounting guidance to simplify the accounting for income taxes. The guidance identifies specific exceptions to be removed from the calculation and reporting of income taxes. The guidance will be effective for the Company in 2021, and the Company does not plan to early adopt. Management is currently evaluating the impact of this guidance on the Company's condensed consolidated financial statements.

In March 2020, the FASB issued authoritative accounting guidance regarding highly effective cash flow hedges affected by reference rate reform. The guidance allows the Company to continue to classify its interest rate hedges as highly effective subsequent to reference rate reform under certain circumstances. The guidance may be adopted in any interim period between March 2020 and December 2020, with the amendments applied prospectively. Management is currently evaluating the impact of this guidance on the Company's condensed consolidated financial statements.

Fair Value of Financial Instruments

In accordance with the FASB’s authoritative accounting guidance on fair value measurements, fair value is the price (exit 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 Company utilizes market data or assumptions that market participants would use in pricing the asset or liability, including assumptions about risk and the risks inherent in the inputs to the valuation technique. These inputs can be readily observable, market corroborated, or generally unobservable. The Company primarily applies the market approach for recurring fair value measurements and utilizes the best available information that maximizes the use of observable inputs and minimizes the use of unobservable inputs. The Company is able to classify fair value balances based on the observability of those inputs. The accounting guidance establishes a fair value hierarchy that prioritizes the inputs used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurement) and the lowest priority to unobservable inputs (Level 3 measurement). The three levels of the fair value hierarchy defined by the relevant guidance are as follows:

Level 1 — Quoted prices are available in active markets for identical assets or liabilities as of the reporting date. Active markets are those in which transactions for the asset or liability occur in sufficient frequency and volume to provide pricing information on an ongoing basis. Level 1 primarily consists of financial instruments such as exchange-traded derivatives, listed equities and publicly traded bonds.

Level 2 — Pricing inputs are other than quoted prices in active markets included in Level 1, which are either directly or indirectly observable as of the reported date. Level 2 includes financial instruments that are valued using quoted prices in markets that are not active and those financial instruments that are valued using models or other valuation methodologies. These models are primarily industry standard models that consider various assumptions, including quoted forward prices for commodities, time value, volatility factors, and current market and contractual prices for the underlying instruments, as well as other relevant economic measures. Substantially all of these assumptions are observable in the marketplace throughout the full term of the instrument, can be derived from observable data or are supported by observable levels at which transactions are executed in the marketplace.

Level 3 — Pricing inputs include significant inputs that are generally less observable from objective sources. These inputs may be used with internally developed methodologies that result in management’s best estimate of fair value. At each balance sheet date, the Company performs an analysis of all instruments subject to authoritative accounting guidance and includes, in Level 3, all of those whose fair value is based on significant unobservable inputs. As of March 31, 2020 and December 31, 2019, the Company did not have any Level 3 financial assets or liabilities.

Derivatives

The Company is subject to interest rate risk related to the New Senior Secured Credit Facility and enters into interest rate swaps that are based on LIBOR to manage a portion of this exposure. The interest rate swaps are designated as cash flow hedges that qualify for hedge accounting under the hypothetical derivative method. Fair value adjustments are recorded as a component of accumulated other comprehensive loss (“AOCL”) in the Condensed Consolidated Balance Sheets. Balances in AOCL are reclassified to earnings when transactions related to the underlying risk are settled. During the first quarter of 2019, the Company entered into $250 million of interest rate swaps and designated them as cash flow hedges under the hypothetical derivative method. As of March 31, 2020, the Company held interest rate swaps effective from September 2019 to September 2025 with notional values totaling $250 million and a weighted average LIBOR fixed rate of 3.04%, interest rate swaps effective from September 2019 to September 2022 with notional values totaling $250 million and a weighted average LIBOR fixed rate of 3.01% and interest rate swaps effective from September 2022 to September 2025 with notional values totaling $250 million and a weighted average LIBOR fixed rate of 2.82%. See NOTE F “Fair Value of Financial Instruments” for information regarding the fair value of the Company’s interest rate swaps.

Lessee Accounting

Contracts are assessed by the Company to determine if the contract conveys the right to control an identified asset in exchange for consideration during a period of time. The Company classifies all identified leases as operating or finance leases. As of March 31, 2020, the Company was not a party to any finance leases. Contracts that contain leases are assessed to determine if the consideration in the contract is related to a lease component, non-lease component or other components not related to the lease. Lease components are recorded as right-of-use (“ROU”) assets and lease liabilities while any non-lease component is expensed as incurred. The consideration in the contract related to other components not related to the lease is allocated among the lease component and the non-lease component, as applicable, based on the stand-alone selling price of the lease and non-lease components.

Income Taxes

The need to establish a valuation allowance against the deferred tax assets is assessed periodically based on a more-likely-than-not realization threshold, in accordance with authoritative accounting guidance. Appropriate consideration is given to all positive and negative evidence related to that realization. This assessment considers, among other matters, the nature, frequency and severity of recent losses, forecasts of future profitability, the duration of statutory carry-forward periods, experience with tax attributes expiring unused, and tax planning alternatives. The weight given to these considerations depends upon the degree to which they can be objectively verified.

The Company continues to provide for a valuation allowance on certain of its foreign deferred tax assets and an anticipated capital loss carryforward. The Company has determined, based on the evaluation of both objective and subjective evidence available, that this valuation allowance is necessary and that it is more likely than not that the deferred tax assets are not fully realizable.

In accordance with the FASB’s authoritative guidance on accounting for income taxes, the Company has recorded a liability for unrecognized tax benefits related to a 2010 Research and Development Credit as of March 31, 2020 and December 31, 2019. The accounting guidance prescribes a recognition threshold and measurement attributes for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. The Company's returns will remain subject to examination by the various taxing authorities for the duration of the applicable statute of limitations (generally three years from the later of the date of filing or the due date of the return).

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Accumulated Other Comprehensive Loss - Changes in Accumulated Other Comprehensive Loss by Component (Details) - USD ($) $ in Millions		3 Months Ended
	Jan. 01, 2019	Mar. 31, 2020	Mar. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	$ 659	$ 781	$ 659
Other comprehensive income (loss) before reclassifications		(31)	(10)
Amounts reclassified from AOCL		(5)	(3)
Income tax		7	3
Reclassification of stranded tax effects	7		7
Net current period other comprehensive income (loss)		(29)	(3)
Balance		693	745
Pension and OPEB liability adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	9	8	9
Other comprehensive income (loss) before reclassifications		0	0
Amounts reclassified from AOCL		(5)	(3)
Income tax		1	1
Reclassification of stranded tax effects			8
Net current period other comprehensive income (loss)		(4)	6
Balance		4	15
Available-for-sale securities and interest rate swaps
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(7)	(26)	(7)
Other comprehensive income (loss) before reclassifications		(29)	(10)
Amounts reclassified from AOCL		0	0
Income tax		6	2
Reclassification of stranded tax effects			(1)
Net current period other comprehensive income (loss)		(23)	(9)
Balance		(49)	(16)
Foreign currency items
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(32)	(34)	(32)
Other comprehensive income (loss) before reclassifications		(2)	0
Amounts reclassified from AOCL		0	0
Income tax		0	0
Reclassification of stranded tax effects			0
Net current period other comprehensive income (loss)		(2)	0
Balance		(36)	(32)
Accumulated Other Comprehensive Loss, net of tax
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	$ (30)	(52)	(30)
Balance		$ (81)	$ (33)

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Deferred Revenue - Additional Information (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Disaggregation of Revenue [Line Items]
Deferred revenue current liabilities	$ 34	$ 35	$ 34
Deferred revenue non-current liabilities	106	$ 104	97
ETC contracts
Disaggregation of Revenue [Line Items]
Deferred revenue current liabilities	27		29
Deferred revenue non-current liabilities	$ 87		$ 74

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Leases - Schedule of Right of Use Assets (Details) $ in Millions	Mar. 31, 2020 USD ($)
Lessee, Lease, Description [Line Items]
Total right-of-use assets	$ 23
Buildings
Lessee, Lease, Description [Line Items]
Total right-of-use assets	21
Land
Lessee, Lease, Description [Line Items]
Total right-of-use assets	1
Vehicles
Lessee, Lease, Description [Line Items]
Total right-of-use assets	$ 1

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Goodwill and Other Intangible Assets - Schedule of Other Intangible Assets (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Line Items]
Intangible assets, gross, Total	$ 2,223	$ 2,223
Accumulated amortization	(1,197)	(1,181)
Intangible assets, net, Total	1,026	1,042
Customer relationships — commercial
Goodwill and Intangible Assets Disclosure [Line Items]
Intangible assets, gross	839	839
Accumulated amortization	(675)	(664)
Intangible assets, net	164	175
Proprietary technology
Goodwill and Intangible Assets Disclosure [Line Items]
Intangible assets, gross	481	481
Accumulated amortization	(477)	(473)
Intangible assets, net	4	8
Customer relationships — defense
Goodwill and Intangible Assets Disclosure [Line Items]
Intangible assets, gross	62	62
Accumulated amortization	(45)	(44)
Intangible assets, net	17	18
Trade name
Goodwill and Intangible Assets Disclosure [Line Items]
Indefinite lived intangible assets	791	791
In process research and development
Goodwill and Intangible Assets Disclosure [Line Items]
Indefinite lived intangible assets	$ 50	$ 50

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Revenue - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Revenue From Contract With Customer [Abstract]
Adjustments based on variable consideration	$ 0	$ 0
Credit term period	30 days
Contract assets	$ 0		$ 0

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Debt - Summary of Long-Term Debt and Maturities (Parenthetical) (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Senior Notes, Fixed 5.0%, Due 2024
Debt Instrument [Line Items]
Debt instrument, stated interest rate	5.00%	5.00%
Debt instrument, due date	2024	2024
Senior Secured Credit Facility Term Loan, Variable, Due 2026
Debt Instrument [Line Items]
Debt instrument, due date	2026	2026
Senior Notes, Fixed 4.75%, Due 2027
Debt Instrument [Line Items]
Debt instrument, stated interest rate	4.75%	4.75%
Debt instrument, due date	2027	2027
Senior Notes, Fixed 5.875%, Due 2029
Debt Instrument [Line Items]
Debt instrument, stated interest rate	5.875%	5.875%
Debt instrument, due date	2029	2029

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Debt - 4.75% Senior Notes - Additional Information (Details)	Mar. 31, 2020	Dec. 31, 2019
Senior Notes, Fixed 4.75%, Due 2027
Debt Instrument [Line Items]
Debt instrument, stated interest rate	4.75%	4.75%

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Product Warranty Liabilities - Additional Information (Detail) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Guarantees [Abstract]
Product warranty liability, current	$ 25	$ 24	$ 27
Product warranty liability, non-current	$ 26	$ 28	$ 37

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Certain Relationships and Related Party Transactions - Additional Information (Details) - USD ($) $ in Millions		3 Months Ended
	May 07, 2019	Mar. 31, 2020
2016 Repurchase Program
Related Party Transaction [Line Items]
Common stock, repurchased during the period		$ 180
Ashe Capital Management, LP
Related Party Transaction [Line Items]
Common stock repurchased during the period (shares)	4,977,043
Ashe Capital Management, LP | 2016 Repurchase Program
Related Party Transaction [Line Items]
Common stock, repurchased during the period	$ 232

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Commitments and Contingencies - Additional Information (Details) $ in Millions	3 Months Ended
	Dec. 31, 2019 USD ($)
Commitments And Contingencies Disclosure [Abstract]
Increase (decrease) in environmental liability	$ 3
Estimated undiscounted liabilities payment period	30 years

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Overview

3 Months Ended

Mar. 31, 2020

Accounting Policies [Abstract]

Overview

NOTE A. OVERVIEW

Overview

Allison Transmission Holdings, Inc. and its subsidiaries (“Allison,” or the “Company”) design and manufacture vehicle propulsion solutions, including commercial duty on-highway, off-highway and defense fully automatic transmissions and electric hybrid and fully electric systems. The business was founded in 1915 and has been headquartered in Indianapolis, Indiana since inception. Allison was an operating unit of General Motors Corporation from 1929 until 2007, when Allison once again became a stand-alone company. In March 2012, Allison began trading on the New York Stock Exchange under the symbol, “ALSN”.

Although approximately 77% of revenues were generated in North America in 2019, the Company has a global presence by serving customers in Europe, Asia, South America and Africa. The Company serves customers through an independent network of approximately 1,500 independent distributor and dealer locations worldwide.

In March 2020, the World Health Organization categorized the novel coronavirus ("COVID-19") as a pandemic, and it continues to spread throughout the United States and other major markets in which the Company operates across the world. To limit the spread of COVID-19, governments have taken various actions including the issuance of stay-at-home orders and social distancing guidelines. While the majority of the Company’s plants are continuing to operate as essential businesses, the Company’s manufacturing facilities in Hungary, India, Indianapolis and Tennessee have suspended or cut back on operating levels and shifts as a result of government orders, the Company’s inability to obtain component parts from suppliers and/or decreased customer demand, and additional suspensions and cutbacks may occur as the impacts from COVID-19 and related responses continue to develop within the Company’s global supply chains and customer base. The Company is taking a variety of measures to maintain operations with as minimal impact as possible to its stakeholders and to promote the safety and security of its employees, including increased frequency of cleaning and disinfecting of facilities, social distancing, remote working when possible, travel restrictions and limitations on visitor access to facilities.

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Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Allowances for doubtful accounts receivables	$ 1	$ 1
Preferred stock, par value (USD per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	100,000,000	100,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Voting Common Stock
Common stock, par value (USD per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	1,880,000,000	1,880,000,000
Common stock, shares issued (in shares)	113,176,677	118,199,782
Common stock, shares outstanding (in shares)	113,176,677	118,199,782
Non-voting Common Stock
Common stock, par value (USD per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	20,000,000	20,000,000
Common stock, shares issued (in shares)	0	0
Common stock, shares outstanding (in shares)	0	0

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Debt

3 Months Ended

Mar. 31, 2020

Debt Disclosure [Abstract]

Debt

NOTE G. DEBT

Long-term debt and maturities are as follows (dollars in millions):

	March 31, 2020		December 31, 2019
Long-term debt:
Senior Notes, fixed 5.0%, due 2024	$	1,000	$	1,000
Senior Secured Credit Facility Term Loan, variable, due 2026		643		644
Senior Notes, fixed 4.75%, due 2027		400		400
Senior Notes, fixed 5.875%, due 2029		500		500
Total long-term debt	$	2,543	$	2,544
Less: current maturities of long-term debt		6		6
deferred financing costs, net		25		26
Total long-term debt, net	$	2,512	$	2,512

As of March 31, 2020, the Company had $2,543 million of indebtedness associated with Allison Transmission, Inc.’s (“ATI”), the Company’s wholly-owned subsidiary, 5.0% Senior Notes due September 2024 (“5.0% Senior Notes”), ATI’s 4.75% Senior Notes due October 2027 (“4.75% Senior Notes”), ATI’s 5.875% Senior Notes due June 2029 (“5.875% Senior Notes,” and, together with the 5.0% Senior Notes and 4.75% Senior Notes, the “Senior Notes”) and the Second Amended and Restated Credit Agreement dated as of March 29, 2019 (the “Credit Agreement”), governing ATI’s new term loan facility in the amount of $643 million due March 2026 (“New Term Loan”) and ATI’s new revolving credit facility with commitments in the amount of $600 million due September 2024 (“New Revolving Credit Facility” and, together with the New Term Loan, the “New Senior Secured Credit Facility”).

The fair value of the Company’s long-term debt obligations as of March 31, 2020 was $2,397 million. The fair value is based on quoted Level 2 market prices of the Company’s debt as of March 31, 2020. It is not expected that the Company would be able to repurchase a significant amount of its debt at these levels. The difference between the fair value and carrying value of the long-term debt is driven primarily by trends in the financial markets.

New Senior Secured Credit Facility

In March 2019, the Company and ATI entered into the Credit Agreement to reduce the commitments under the prior term loan due 2022 (“Prior Term Loan”) by $500 million and increase the commitments under the prior $550 million revolving credit facility due 2021 (“Prior Revolving Credit Facility” and, together with the Prior Term Loan, the “Prior Senior Secured Credit Facility”) by $50 million. The New Senior Secured Credit Facility also extended the maturity of the Prior Term Loan from 2022 to 2026 and extended the Prior Revolving Credit Facility termination date from 2021 to 2024. The New Senior Secured Credit Facility replaced the Prior Senior Secured Credit Facility, including the Prior Term Loan and Prior Revolving Credit Facility, on March 29, 2019. The Credit Agreement was treated as a modification to the Prior Senior Secured Credit Facility under GAAP, and thus the Company expensed $5 million of prior deferred financing fees and $1 million of related third party fees in the Condensed Consolidated Statement of Comprehensive Income for the three months ended March 31, 2019 and recorded $5 million as new deferred financing fees in the Condensed Consolidated Balance Sheet in the first quarter of 2019.

In October 2019, ATI entered into an amendment to the Credit Agreement with the lenders under its New Senior Secured Credit Facility to lower the applicable margins on the New Term Loan by 0.25%. The October 2019 amendment was treated as a modification to the New Senior Secured Credit Facility under GAAP.

The borrowings under the New Senior Secured Credit Facility are collateralized by a lien on substantially all assets of the Company, ATI and each of the existing and future U.S. subsidiary guarantors, with certain exceptions set forth in the Credit Agreement, and ATI’s capital stock and all of the capital stock or other equity interests held by the Company, ATI and each of ATI’s existing and future U.S. subsidiary guarantors (subject to certain limitations for equity interest of foreign subsidiaries and other exceptions set forth in the Credit Agreement). Interest on the New Term Loan, as of March 31, 2020, is either (a) 1.75% over a LIBOR rate on deposits in U.S. dollars for one-, two-, three- or six-month periods (or twelve-month or shorter periods if, at the time of the borrowing, available from all relevant lenders) (the "LIBOR Rate"), or (b) 0.75% over the greater of the prime lending rate as quoted by the administrative agent, the LIBOR Rate for an interest period of one month plus 1.00% and the federal funds effective rate published by the Federal Reserve Bank of New York plus 0.50%, subject to a 1.00% floor (the "Base Rate"). As of March 31, 2020, the Company elected to pay the lowest all-in rate of LIBOR plus the applicable margin, or 2.67%, on the New Term Loan. The Credit Agreement requires minimum quarterly principal payments on the New Term Loan, as well as prepayments from certain net cash proceeds of non-ordinary course asset sales and casualty and condemnation events, the incurrence of certain debt and from a percentage of excess cash flow, if applicable. The minimum required quarterly principal payment on the New Term Loan through its maturity date of March 2026 is $2 million. As of March 31, 2020, there had been no payments required for certain net cash proceeds of non-ordinary course asset sales and casualty and condemnation events. The remaining principal balance is due upon maturity.

The New Senior Secured Credit Facility also provides a New Revolving Credit Facility, net of an allowance for up to $75 million in outstanding letters of credit commitments. Throughout the three months ended March 31, 2020, the Company made periodic withdrawals and payments on the New Revolving Credit Facility as part of the Company's debt management plans. The maximum amount outstanding at any time during the three months ended March 31, 2020 was $300 million. As of March 31, 2020, the Company had $595 million available under the New Revolving Credit Facility, net of $5 million in letters of credit. Borrowings under the New Revolving Credit Facility bear interest at a variable base rate plus an applicable margin based on the Company’s first lien net leverage ratio. When the Company’s first lien net leverage ratio is above 4.00x, interest on the New Revolving Credit Facility is (a) 0.75% over the Base Rate or (b) 1.75% over the LIBOR Rate; when the Company’s first lien net leverage ratio is equal to or less than 4.00x and above 3.50x, interest on the New Revolving Credit Facility is (i) 0.50% over the Base Rate or (ii) 1.50% over the LIBOR Rate; and when the Company’s first lien net leverage ratio is equal to or below 3.50x, interest on the New Revolving Credit Facility is (y) 0.25% over the Base Rate or (z) 1.25% over the LIBOR Rate. As of March 31, 2020, the applicable margin for the New Revolving Credit Facility was 1.25%. In addition, there is an annual commitment fee, based on the Company’s first lien net leverage ratio, on the average unused revolving credit borrowings available under the New Revolving Credit Facility. As of March 31, 2020, the commitment fee is 0.25%. Borrowings under the New Revolving Credit Facility are payable at the option of the Company throughout the term of the New Senior Secured Credit Facility with the balance due in September 2024.

The New Senior Secured Credit Facility requires the Company to maintain a specified maximum first lien net leverage ratio of 5.50x when revolving loan commitments remain outstanding on the New Revolving Credit Facility at the end of a fiscal quarter. As of March 31, 2020, the Company had no amounts outstanding under the New Revolving Credit Facility; however, the Company would have been in compliance with the maximum first lien net leverage ratio, achieving a 0.50x ratio. Additionally, within the terms of the New Senior Secured Credit Facility, a first lien net leverage ratio at or below 4.00x results in the elimination of excess cash flow payments on the New Senior Secured Credit Facility for the applicable year.

In addition, the Credit Agreement, among other things, includes customary restrictions (subject to certain exceptions) on the Company’s ability to incur certain indebtedness, grant certain liens, make certain investments, engage in acquisitions, consolidations and mergers, declare or pay certain dividends or repurchase shares of the Company’s common stock. As of March 31, 2020, the Company was in compliance with all covenants under the Credit Agreement.

5.0% Senior Notes

The 5.0% Senior Notes are unsecured and are guaranteed by each of ATI’s domestic subsidiaries that is a borrower under or guarantees the New Senior Secured Credit Facility and are unconditionally guaranteed, jointly and severally, by any of ATI’s future domestic subsidiaries that are borrowers under or guarantee the New Senior Secured Credit Facility. None of ATI’s domestic subsidiaries currently guarantee its obligations under the New Senior Secured Credit Facility, and therefore none of ATI’s domestic subsidiaries currently guarantee the 5.0% Senior Notes. The indenture governing the 5.0% Senior Notes contains negative covenants restricting or limiting the Company’s ability to, among other things: incur or guarantee additional indebtedness, incur liens, pay dividends on, redeem or repurchase the Company’s capital stock, make certain investments, permit payment or dividend restrictions on certain of the Company’s subsidiaries, sell assets, engage in certain transactions with affiliates, and consolidate or merge or sell all or substantially all of the Company’s assets. As of March 31, 2020, the Company was in compliance with all covenants under the indenture governing the 5.0% Senior Notes.

4.75% Senior Notes

The 4.75% Senior Notes are unsecured and are guaranteed by each of ATI’s domestic subsidiaries that is a borrower under or guarantees the New Senior Secured Credit Facility and are unconditionally guaranteed, jointly and severally, by any of ATI’s future domestic subsidiaries that are borrowers under or guarantee the New Senior Secured Credit Facility. None of ATI’s domestic subsidiaries currently guarantee its obligations under the New Senior Secured Credit Facility, and therefore none of ATI’s domestic subsidiaries currently guarantee the 4.75% Senior Notes. The indenture governing the 4.75% Senior Notes contains negative covenants restricting or limiting the Company’s ability to, among other things: incur or guarantee additional indebtedness, incur liens, pay dividends on, redeem or repurchase the Company’s capital stock, make certain investments, permit payment or dividend restrictions on certain of the Company’s subsidiaries, sell assets, engage in certain transactions with affiliates, and consolidate or merge or sell all or substantially all of the Company’s assets. As of March 31, 2020, the Company was in compliance with all covenants under the indenture governing the 4.75% Senior Notes.

5.875% Senior Notes

In March 2019, ATI completed an offering of $500 million of the 5.875% Senior Notes. The 5.875% Senior Notes were offered in a private placement exempt from registration under the Securities Act of 1933, as amended. The net proceeds from the offering, together with borrowings under the New Senior Secured Credit Facility and cash on hand, were used to repay all of the outstanding borrowings under the Prior Term Loan plus accrued and unpaid interest and related transaction expenses. As a result of the offering, the Company recorded $6 million as deferred financing fees in the Condensed Consolidated Balance Sheet in the first quarter of 2019.

The 5.875% Senior Notes are unsecured and are guaranteed by each of ATI’s domestic subsidiaries that is a borrower under or guarantees the New Senior Secured Credit Facility and are unconditionally guaranteed, jointly and severally, by any of ATI’s future domestic subsidiaries that are borrowers under or guarantee the New Senior Secured Credit Facility. None of ATI’s domestic subsidiaries currently guarantee its obligations under the New Senior Secured Credit Facility, and therefore none of ATI’s domestic subsidiaries currently guarantee the 5.875% Senior Notes. The indenture governing the 5.875% Senior Notes contains negative covenants restricting or limiting the Company’s ability to, among other things: incur or guarantee additional indebtedness, incur liens, pay dividends on, redeem or repurchase the Company’s capital stock, make certain investments, permit payment or dividend restrictions on certain of the Company’s subsidiaries, sell assets, engage in certain transactions with affiliates, and consolidate or merge or sell all or substantially all of the Company’s assets. As of March 31, 2020, the Company was in compliance with all covenants under the indenture governing the 5.875% Senior Notes.

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Leases

3 Months Ended

Mar. 31, 2020

Leases [Abstract]

Leases

NOTE K. LEASES

Contracts are assessed by the Company to determine if the contract conveys the right to control an identified asset in exchange for consideration during a period of time. The Company classifies all identified leases as operating or finance leases. As of March 31, 2020, the Company was not a party to any finance leases. Contracts that contain leases are assessed to determine if the consideration in the contract is related to a lease component, non-lease component or other components not related to the lease. Lease components are recorded as right-of-use (“ROU”) assets and lease liabilities while any non-lease component is expensed as incurred. The consideration in the contract related to other components not related to the lease is allocated among the lease component and the non-lease component, as applicable, based on the stand-alone selling price of the lease and non-lease components.

Certain lease contracts may contain an option to extend or terminate the lease. The Company considers the economic impact of extension and termination options by contract. If the Company concludes it is reasonably certain an option will be exercised, that option is included in the lease term and impacts the amount recorded as an ROU asset and lease liability upon inception of the contract.

The Company's lease liability is determined by discounting the future cash flows over the lease period. The Company determines its discount rates utilizing current secured financing rates based on the length of the lease period plus the Company's margin over LIBOR on the New Term Loan. The Company believes this rate effectively represents a borrowing rate the Company could obtain on a debt instrument possessing similar terms as the lease. The lease liability is classified between current and non-current liabilities based on the terms of the underlying leases. The weighted average discount rate on operating leases as of both March 31, 2020 and December 31, 2019 was 4.36%.

As of March 31, 2020, the Company recorded current and non-current operating lease liabilities of $5 million and $17 million, respectively. As of December 31, 2019, the Company recorded current and non-current operating lease liabilities of $5 million and $18 million, respectively. The following table reconciles total operating lease liabilities as of March 31, 2020 to future undiscounted cash flows for operating leases:

	March 31, 2020
2020	$	5
2021		4
2022		3
2023		3
2024		2
Thereafter		9
Total lease payments	$	26
Less: Interest		4
Present value of lease liabilities	$	22

ROU assets are calculated as the related lease liability adjusted for lease incentives, prepayments and the effect of escalating lease payments on period expense. The below table depicts the ROU assets held by the Company based on the underlying asset:

	March 31, 2020
Buildings	$	21
Land		1
Vehicles		1
Total right-of-use assets	$	23

The weighted average remaining lease term as of March 31, 2020 and March 31, 2019 was 7.7 years and 5.4 years, respectively.

Operating lease expense was $1 million for each of the three months ended March 31, 2020 and 2019 and was recorded within Selling, general and administrative expense and Engineering - research and development on the Company's Condensed Consolidated Statements of Comprehensive Income. There was no short-term operating lease expense for the three months ended March 31, 2020 and 2019.

The calculation of the Company's ROU assets and lease liabilities did not include cash consideration as of March 31, 2020 and December 31, 2019. During the three months ended March 31, 2020 and March 31, 2019, the Company recorded $1 million and zero, respectively, of new ROU assets obtained in exchange for lease obligations.

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Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2020

Compensation And Retirement Disclosure [Abstract]

Components of Net Periodic Benefit Cost (credit)

Components of net periodic benefit cost (credit) consist of the following (dollars in millions):

	Pension Plans						Post-retirement Benefits
	For the Three Months Ended March 31,						For the Three Months Ended March 31,
	2020			2019			2020			2019
Net periodic benefit cost:
Service cost	$	2		$	2		$	—		$	—
Interest cost		2			2			1			1
Expected return on assets		(2	)		(2	)		—			—
Prior service credit		—			—			(3	)		(3	)
Net periodic benefit cost (credit)	$	2		$	2		$	(2	)	$	(2	)

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Product Warranty Liabilities (Tables)

3 Months Ended

Mar. 31, 2020

Guarantees And Product Warranties [Abstract]

Product Warranty Liability Activities

Product warranty liability activities consist of the following (dollars in millions):

	Three Months Ended March 31,
	2020			2019
Beginning balance	$	52		$	66
Payments		(7	)		(6	)
Increase in liability (warranty issued during period)		5			5
Net adjustments to liability		1			(1	)
Ending balance	$	51		$	64

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Goodwill and Other Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2020

Goodwill And Intangible Assets Disclosure [Abstract]

Schedule of Other Intangible Assets

The following presents a summary of other intangible assets (dollars in millions):

	March 31, 2020							December 31, 2019
	Intangible assets, gross		Accumulated amortization			Intangible assets, net		Intangible assets, gross		Accumulated amortization			Intangible assets, net
Other intangible assets:
Trade name	$	791	$	—		$	791	$	791	$	—		$	791
In process research and development		50		—			50		50		—			50
Customer relationships — commercial		839		(675	)		164		839		(664	)		175
Proprietary technology		481		(477	)		4		481		(473	)		8
Customer relationships — defense		62		(45	)		17		62		(44	)		18
Total	$	2,223	$	(1,197	)	$	1,026	$	2,223	$	(1,181	)	$	1,042

Schedule of Amortization Expense Related to Other Intangible Assets for Next Five Fiscal Years

Amortization expense related to other intangible assets for the next five fiscal years is expected to be (dollars in millions):

	2021		2022		2023		2024		2025
Amortization expense	$	46	$	45	$	43	$	8	$	4

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Accumulated Other Comprehensive Loss

3 Months Ended

Mar. 31, 2020

Equity [Abstract]

Accumulated Other Comprehensive Loss

NOTE O. ACCUMULATED OTHER COMPREHENSIVE LOSS

The following tables reconcile changes in AOCL by component (net of tax, dollars in millions):

	Three months ended
	Pension and OPEB liability adjustment			Available- for-sale securities and interest rate swaps			Foreign currency items			Total
AOCL as of December 31, 2018	$	9		$	(7	)	$	(32	)	$	(30	)
Other comprehensive income before reclassifications		—			(10	)		—			(10	)
Amounts reclassified from AOCL		(3	)		—			—			(3	)
Income tax		1			2			—			3
Reclassification of stranded tax effects		8			(1	)		—			7
Net current period other comprehensive income (loss)	$	6		$	(9	)	$	—		$	(3	)
AOCL as of March 31, 2019	$	15		$	(16	)	$	(32	)	$	(33	)
AOCL as of December 31, 2019	$	8		$	(26	)	$	(34	)	$	(52	)
Other comprehensive loss before reclassifications		—			(29	)		(2	)		(31	)
Amounts reclassified from AOCL		(5	)		—			—			(5	)
Income tax		1			6			—			7
Net current period other comprehensive loss	$	(4	)	$	(23	)	$	(2	)	$	(29	)
AOCL as of March 31, 2020	$	4		$	(49	)	$	(36	)	$	(81	)

The Company reclassified approximately $7 million, as of January 1, 2019, from accumulated other comprehensive loss to retained earnings for the stranded tax effects resulting from the U.S. Tax Cuts and Jobs Act. This reclassification had zero net effect on total stockholders' equity. The Company utilizes the portfolio securities approach when releasing income tax effects from AOCL for its investment securities.

	Amounts reclassified from AOCL
AOCL Components	Three months ended March 31, 2020			Three months ended March 31, 2019			Affected line item in the Condensed Consolidated Statements of Comprehensive Income
Amortization of benefit items:
Prior service cost	$	5		$	3		Other (expense) income, net
Total reclassifications, before tax	$	5		$	3		Income before income taxes
Income tax expense		(1	)		(1	)	Income tax expense
Total reclassifications, net of tax	$	4		$	2

Prior service cost and actuarial loss are included in the computation of the Company’s net periodic benefit cost. See NOTE M, “Employee Benefit Plans” for additional details.

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Certain Relationships and Related Party Transactions

3 Months Ended

Mar. 31, 2020

Related Party Transactions [Abstract]

Certain Relationships and Related Party Transactions

NOTE S. CERTAIN RELATIONSHIPS AND RELATED PARTY TRANSACTIONS

On May 7, 2019, the Company entered into a stock repurchase agreement with Ashe Capital Management, LP to repurchase 4,977,043 shares of the Company's common stock for approximately $232 million. William Harker, a member of the Company's Board of Directors until May 9, 2019, is the President and Co-Founder of Ashe Capital Management, LP. The shares were repurchased under the Repurchase Program. The purchase was funded with cash on hand and borrowings under the New Revolving Credit Facility. The shares were subsequently retired.

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Inventories (Tables)

3 Months Ended

Mar. 31, 2020

Inventory Disclosure [Abstract]

Schedule of Components of Inventories

Inventories consisted of the following components (dollars in millions):

	March 31, 2020		December 31, 2019
Purchased parts and raw materials	$	103	$	91
Work in progress		22		17
Service parts		52		60
Finished goods		30		31
Total inventories	$	207	$	199

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Fair Value of Financial Instruments - Additional Information (Details) - Fair Value, Inputs, Level 3 - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Financial assets	$ 0	$ 0
Financial liabilities	$ 0	$ 0

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Inventories - Schedule of Components of Inventories (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Inventory Disclosure [Abstract]
Purchased parts and raw materials	$ 103	$ 91
Work in progress	22	17
Service parts	52	60
Finished goods	30	31
Total inventories	$ 207	$ 199

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Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2020

Earnings Per Share [Abstract]

Schedule of Reconciliation of Numerators and Denominators Used to Calculate Basic EPS and Diluted EPS

The following table reconciles the numerators and denominators used to calculate basic EPS and diluted EPS (in millions, except per share data):

	Three Months Ended March 31,
	2020		2019
Net income	$	139	$	167
Weighted average shares of common stock outstanding		116		126
Dilutive effect of stock-based awards		—		1
Diluted weighted average shares of common stock outstanding		116		127
Basic earnings per share attributable to common stockholders	$	1.20	$	1.33
Diluted earnings per share attributable to common stockholders	$	1.20	$	1.32

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Leases - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Leases [Abstract]
Discount rate	4.36%		4.36%
Current lease liabilities	$ 5,000,000		$ 5,000,000
Non-current lease liabilities	$ 17,000,000		$ 18,000,000
Remaining lease term	7 years 8 months 12 days	5 years 4 months 24 days
Operating expense	$ 1,000,000	$ 1,000,000
Short term operating lease expense	0	0
New ROU assets	$ 1,000,000	$ 0

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Employee Benefit Plans - Components of Net Periodic Benefit Cost (Credit) (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 2	$ 2
Interest cost	2	2
Expected return on assets	(2)	(2)
Prior service credit	0	0
Net periodic benefit cost (credit)	2	2
Post-retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0
Interest cost	1	1
Expected return on assets	0	0
Prior service credit	(3)	(3)
Net periodic benefit cost (credit)	$ (2)	$ (2)

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Revenue (Tables)

3 Months Ended

Mar. 31, 2020

Revenue From Contract With Customer [Abstract]

Disaggregated Revenue by Categories

The following presents disaggregated revenue by categories that best depict how the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors (dollars in millions):

	Three Months Ended March 31,
	2020		2019
North America On-Highway	$	352	$	377
North America Off-Highway		8		14
Defense		40		32
Outside North America On-Highway		72		94
Outside North America Off-Highway		27		27
Service Parts, Support Equipment and Other		138		131
Total Net Sales	$	637	$	675

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Income Taxes

3 Months Ended

Mar. 31, 2020

Income Tax Disclosure [Abstract]

Income Taxes

NOTE N. INCOME TAXES

For the three months ended March 31, 2020, the Company recorded total tax expense of $42 million. The effective tax rate for the three months ended March 31, 2020 was 23%. For the three months ended March 31, 2019, the Company recorded total tax expense of $44 million. The effective tax rate for the three months ended March 31, 2019 was 21%.

On March 27, 2020, the Coronavirus Aid, Relief, and Economic Security Act (the “CARES Act”) was signed into law making several changes to the U.S. tax code. The changes include, but are not limited to, increasing the threshold on the amount of deductible interest expense, allowing companies to carryback certain net operating losses, increasing the amount of net operating loss carryforwards that corporations can use to offset taxable income, and making technical changes related to the accounting of qualified improvement property. Some of the tax law changes included in the CARES Act are retroactive. The Company is still evaluating certain of these elections, and the Company’s provision for income taxes for the three months ended March 31, 2020 does not reflect the effect of any of these elections. The effects, both individually and in the aggregate, are not expected to be material at this time.

The need to establish a valuation allowance against the deferred tax assets is assessed periodically based on a more-likely-than-not realization threshold, in accordance with authoritative accounting guidance. Appropriate consideration is given to all positive and negative evidence related to that realization. This assessment considers, among other matters, the nature, frequency and severity of recent losses, forecasts of future profitability, the duration of statutory carry-forward periods, experience with tax attributes expiring unused, and tax planning alternatives. The weight given to these considerations depends upon the degree to which they can be objectively verified.

The Company continues to provide for a valuation allowance on certain of its foreign deferred tax assets and an anticipated capital loss carryforward. The Company has determined, based on the evaluation of both objective and subjective evidence available, that this valuation allowance is necessary and that it is more likely than not that the deferred tax assets are not fully realizable.

In accordance with the FASB’s authoritative guidance on accounting for income taxes, the Company has recorded a liability for unrecognized tax benefits related to a 2010 Research and Development Credit as of March 31, 2020 and December 31, 2019. The accounting guidance prescribes a recognition threshold and measurement attributes for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. The Company's returns will remain subject to examination by the various taxing authorities for the duration of the applicable statute of limitations (generally three years from the later of the date of filing or the due date of the return).

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Common Stock

3 Months Ended

Mar. 31, 2020

Equity [Abstract]

Common Stock

NOTE R. COMMON STOCK

The Company’s current stock repurchase program (the “Repurchase Program”) was announced on November 14, 2016 when the Board of Directors authorized the Company to repurchase up to $1,000 million of its common stock on the open market or through privately negotiated transactions. On November 8, 2017, July 30, 2018 and May 9, 2019, the Board of Directors authorized the Company to repurchase an additional $500 million, $500 million and $1,000 million, respectively, of its common stock, bringing the total amount authorized under the Repurchase Program to $3,000 million. The Repurchase Program has no termination date. The timing and amount of stock purchases are subject to market conditions and corporate needs. The Repurchase Program may be modified, suspended or discontinued at any time at the Company’s discretion.

During the three months ended March 31, 2020, the Company repurchased approximately $180 million of its common stock under the Repurchase Program, leaving $872 million of authorized repurchases remaining under the Repurchase Program as of March 31, 2020.

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Goodwill And Other Intangible Assets - Additional Information (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill	$ 2,041	$ 2,041
Net carrying value of Goodwill and other intangible assets	$ 3,067	$ 3,083

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Overview - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2020 Customer
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Worldwide independent distributor and dealer locations	1,500
Sales Revenue, Net | North America | Geographic Concentration Risk
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Concentration of risk, percentage	77.00%

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Fair Value of Financial Instruments - Summary of Fair Value of Financial Assets and (Liabilities) (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash equivalents	$ 0	$ 70
Rabbi trust assets	12	12
Deferred compensation obligation	(12)	(12)
Total	(63)	36
Derivatives Designated as Hedging Instruments
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative liabilities	(63)	(34)
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash equivalents	0	70
Rabbi trust assets	12	12
Deferred compensation obligation	(12)	(12)
Total	0	70
Quoted Prices in Active Markets for Identical Assets (Level 1) | Derivatives Designated as Hedging Instruments
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative liabilities	0	0
Significant Other Observable Inputs (Level 2)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Rabbi trust assets	0	0
Deferred compensation obligation	0	0
Total	(63)	(34)
Significant Other Observable Inputs (Level 2) | Derivatives Designated as Hedging Instruments
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative liabilities	$ (63)	$ (34)

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Deferred Revenue - Summary of Deferred Revenue Activity (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenue Recognition And Deferred Revenue [Abstract]
Beginning balance	$ 139	$ 122
Increases	11	18
Revenue earned	(10)	(9)
Ending balance	$ 140	$ 131

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Other Current Liabilities - Summary of Other Current Liabilities (Detail) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Payables And Accruals [Abstract]
Accrued interest payable	$ 45	$ 21
Sales allowances	30	32
Payroll and related costs	29	87
Vendor buyback obligation	16	16
Derivative liabilities	12	7
Taxes payable	11	12
Lease liability	5	5
Vendor liability	3	3
Non-trade payables	2	2
Other accruals	17	17
Total	$ 170	$ 202

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Derivatives - Derivative Instruments and their Impact on Financial Condition (Details) - Derivatives Designated as Hedging Instruments - Interest Rate Swaps - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Derivative [Line Items]
Total derivatives designated as hedging instruments	$ 63	$ 34
Other current liabilities
Derivative [Line Items]
Interest rate swaps, liability	12	7
Other non-current liabilities
Derivative [Line Items]
Interest rate swaps, liability	$ 51	$ 27

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Debt - Summary of Long-Term Debt and Maturities (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Total long-term debt	$ 2,543	$ 2,544
Current portion of long-term debt	6	6
deferred financing costs, net	25	26
Long-term debt	2,512	2,512
Senior Notes, Fixed 5.0%, Due 2024
Debt Instrument [Line Items]
Total long-term debt	1,000	1,000
Senior Secured Credit Facility Term Loan, Variable, Due 2026
Debt Instrument [Line Items]
Total long-term debt	643	644
Senior Notes, Fixed 4.75%, Due 2027
Debt Instrument [Line Items]
Total long-term debt	400	400
Senior Notes, Fixed 5.875%, Due 2029
Debt Instrument [Line Items]
Total long-term debt	500	$ 500
deferred financing costs, net	$ 6

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Debt - 5.0% Senior Notes - Additional Information (Details)	Mar. 31, 2020	Dec. 31, 2019
Senior Notes, Fixed 5.0%, Due 2024
Debt Instrument [Line Items]
Debt instrument, stated interest rate	5.00%	5.00%

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Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Millions	Total	Voting Common Stock	Paid-in Capital	Accumulated (Deficit) Income	Accumulated Other Comprehensive (Loss) Income, net of tax
Balance at Dec. 31, 2018	$ 659	$ 1	$ 1,788	$ (1,100)	$ (30)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	3		3
Pension and OPEB liability adjustment	6				6
Available-for-sale securities and interest rate swaps	(9)				(9)
Issuance of common stock	(4)		(4)
Repurchase of common stock	(50)			(50)
Dividends on common stock	(19)			(19)
Impact of adopting accounting standards	(8)			(8)
Net income	167			167
Balance at Mar. 31, 2019	745	1	1,787	(1,010)	(33)
Balance at Dec. 31, 2019	781	1	1,802	(970)	(52)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	3		3
Pension and OPEB liability adjustment	(4)				(4)
Foreign currency translation adjustment	(2)				(2)
Available-for-sale securities and interest rate swaps	(23)				(23)
Issuance of common stock	(1)		(1)
Repurchase of common stock	(180)			(180)
Dividends on common stock	(20)			(20)
Net income	139			139
Balance at Mar. 31, 2020	$ 693	$ 1	$ 1,804	$ (1,031)	$ (81)

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Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Current Assets
Cash and cash equivalents	$ 114	$ 192
Accounts receivable – net of allowances for doubtful accounts of $1	303	253
Inventories	207	199
Other current assets	42	42
Total Current Assets	666	686
Property, plant and equipment, net	627	616
Intangible assets, net	1,026	1,042
Goodwill	2,041	2,041
Other non-current assets	64	65
TOTAL ASSETS	4,424	4,450
Current Liabilities
Accounts payable	191	150
Product warranty liability	25	24
Current portion of long-term debt	6	6
Deferred revenue	34	35
Other current liabilities	170	202
Total Current Liabilities	426	417
Product warranty liability	26	28
Deferred revenue	106	104
Long-term debt	2,512	2,512
Deferred income taxes	415	387
Other non-current liabilities	246	221
TOTAL LIABILITIES	3,731	3,669
Commitments and contingencies (see NOTE P)	0	0
STOCKHOLDERS’ EQUITY
Preferred stock, $0.01 par value, 100,000,000 shares authorized, none issued and outstanding	0	0
Paid in capital	1,804	1,802
Accumulated deficit	(1,031)	(970)
Accumulated other comprehensive loss, net of tax	(81)	(52)
TOTAL STOCKHOLDERS’ EQUITY	693	781
TOTAL LIABILITIES & STOCKHOLDERS’ EQUITY	4,424	4,450
Voting Common Stock
STOCKHOLDERS’ EQUITY
Common stock	1	1
TOTAL STOCKHOLDERS’ EQUITY	1	1
Non-voting Common Stock
STOCKHOLDERS’ EQUITY
Common stock	$ 0	$ 0

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Acquisitions - Additional Information (Details) $ in Millions	Sep. 09, 2019 USD ($)
Walker Die Casting
Business Acquisition [Line Items]
Payments to acquire businesses	$ 103

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Earnings Per Share - Additional Information (Details) - shares	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Earnings Per Share [Abstract]
Shares excluded from diluted EPS calculation (in shares)	0	0

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Fair Value of Financial Instruments

3 Months Ended

Mar. 31, 2020

Fair Value Disclosures [Abstract]

Fair Value of Financial Instruments

NOTE F. FAIR VALUE OF FINANCIAL INSTRUMENTS

In accordance with the FASB’s authoritative accounting guidance on fair value measurements, fair value is the price (exit 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 Company utilizes market data or assumptions that market participants would use in pricing the asset or liability, including assumptions about risk and the risks inherent in the inputs to the valuation technique. These inputs can be readily observable, market corroborated, or generally unobservable. The Company primarily applies the market approach for recurring fair value measurements and utilizes the best available information that maximizes the use of observable inputs and minimizes the use of unobservable inputs. The Company is able to classify fair value balances based on the observability of those inputs. The accounting guidance establishes a fair value hierarchy that prioritizes the inputs used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurement) and the lowest priority to unobservable inputs (Level 3 measurement). The three levels of the fair value hierarchy defined by the relevant guidance are as follows:

Level 1 — Quoted prices are available in active markets for identical assets or liabilities as of the reporting date. Active markets are those in which transactions for the asset or liability occur in sufficient frequency and volume to provide pricing information on an ongoing basis. Level 1 primarily consists of financial instruments such as exchange-traded derivatives, listed equities and publicly traded bonds.

Level 2 — Pricing inputs are other than quoted prices in active markets included in Level 1, which are either directly or indirectly observable as of the reported date. Level 2 includes financial instruments that are valued using quoted prices in markets that are not active and those financial instruments that are valued using models or other valuation methodologies. These models are primarily industry standard models that consider various assumptions, including quoted forward prices for commodities, time value, volatility factors, and current market and contractual prices for the underlying instruments, as well as other relevant economic measures. Substantially all of these assumptions are observable in the marketplace throughout the full term of the instrument, can be derived from observable data or are supported by observable levels at which transactions are executed in the marketplace.

Level 3 — Pricing inputs include significant inputs that are generally less observable from objective sources. These inputs may be used with internally developed methodologies that result in management’s best estimate of fair value. At each balance sheet date, the Company performs an analysis of all instruments subject to authoritative accounting guidance and includes, in Level 3, all of those whose fair value is based on significant unobservable inputs. As of March 31, 2020 and December 31, 2019, the Company did not have any Level 3 financial assets or liabilities.

The Company’s assets and liabilities that are measured at fair value include cash equivalents, derivative instruments, assets held in a rabbi trust and a deferred compensation obligation. The Company’s cash equivalents consist of short-term U.S. government backed securities. The Company’s derivative instruments consist of interest rate swaps. The Company’s assets held in the rabbi trust consist principally of publicly available mutual funds and target date retirement funds. The Company’s deferred compensation obligation is directly related to the fair value of assets held in the rabbi trust.

The Company’s valuation techniques used to calculate the fair value of cash and cash equivalents, assets held in the rabbi trust and the deferred compensation obligation represent a market approach in active markets for identical assets that qualify as Level 1 in the fair value hierarchy. The Company’s valuation techniques used to calculate the fair value of derivative instruments represent a market approach with observable inputs that qualify as Level 2 in the fair value hierarchy.

The Company uses valuations from the issuing financial institutions for the fair value measurement of interest rate swaps. The floating-to-fixed interest rate swaps are based on the London Interbank Offered Rate (“LIBOR”), which is observable at commonly quoted intervals. The fair values are included in other current and non-current assets and liabilities in the Condensed Consolidated Balance Sheets.

The following table summarizes the fair value of the Company’s financial assets and (liabilities) as of March 31, 2020 and December 31, 2019 (dollars in millions):

	Fair Value Measurements Using
	Quoted Prices in Active Markets for Identical Assets (Level 1)						Significant Other Observable Inputs (Level 2)						TOTAL
	March 31, 2020			December 31, 2019			March 31, 2020			December 31, 2019			March 31, 2020			December 31, 2019
Cash equivalents	$	—		$	70		$	—		$	—		$	—		$	70
Rabbi trust assets		12			12			—			—			12			12
Deferred compensation obligation		(12	)		(12	)		—			—			(12	)		(12	)
Derivative liabilities		—			—			(63	)		(34	)		(63	)		(34	)
Total	$	—		$	70		$	(63	)	$	(34	)	$	(63	)	$	36

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Deferred Revenue

3 Months Ended

Mar. 31, 2020

Revenue Recognition And Deferred Revenue [Abstract]

Revenue

NOTE C. REVENUE

Revenue is recognized as each distinct performance obligation within a contract is satisfied. A performance obligation is a promise in a contract to transfer a distinct good or service to the customer. The Company enters into long-term agreements (“LTAs”) and distributor agreements with certain customers. The LTAs and distributor agreements do not include committed volumes until underlying purchase orders are issued; therefore, the Company determined that purchase orders are the contract with a customer. A contract’s transaction price is allocated to each distinct performance obligation and recognized as revenue when the performance obligation is satisfied, as there is no right of return.

Some of the Company's contracts include multiple performance obligations, most commonly the sale of both a transmission and Extended Transmission Coverage ("ETC"). The Company allocates the contract’s transaction price to each performance obligation based on the standalone selling price of each distinct good or service in the contract.

The Company may also use volume based discounts and rebates as marketing incentives in the sales of both transmissions and service parts, which are accounted for as variable consideration. The Company records the impact of the incentives as a reduction to revenue when it is determined that the adjustment is not likely to reverse, historically on a quarterly basis. The Company estimates the impact of all other incentives based on the related sales and market conditions in the end market vocation. The Company recorded no adjustments based on variable consideration during the three months ended March 31, 2020 and 2019.

Net sales are made on credit terms, generally 30 days, based on an assessment of the customer’s creditworthiness. For certain goods or services, the Company receives consideration prior to satisfying the related performance obligation. Such consideration is recorded as a contract liability in current and non-current Deferred revenue as of March 31, 2020 and December 31, 2019. See Note J, “Deferred Revenue” for more information including the amount of revenue earned during the three months ended March 31, 2020 and 2019 that had been previously deferred. The Company had no contract assets as of March 31, 2020 and December 31, 2019.

The following presents disaggregated revenue by categories that best depict how the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors (dollars in millions):

	Three Months Ended March 31,
	2020		2019
North America On-Highway	$	352	$	377
North America Off-Highway		8		14
Defense		40		32
Outside North America On-Highway		72		94
Outside North America Off-Highway		27		27
Service Parts, Support Equipment and Other		138		131
Total Net Sales	$	637	$	675

NOTE J. DEFERRED REVENUE

As of March 31, 2020, current and non-current deferred revenue was $34 million and $106 million, respectively. As of March 31, 2019, current and non-current deferred revenue was $34 million and $97 million, respectively.

Deferred revenue activity consists of the following (dollars in millions):

	Three Months Ended March 31,
	2020			2019
Beginning balance	$	139		$	122
Increases		11			18
Revenue earned		(10	)		(9	)
Ending balance	$	140		$	131

Deferred revenue recorded in current and non-current liabilities related to ETC as of March 31, 2020 was $27 million and $87 million, respectively. Deferred revenue recorded in current and non-current liabilities related to ETC as of March 31, 2019 was $29 million and $74 million, respectively.

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Deferred Revenue (Tables)

3 Months Ended

Mar. 31, 2020

Revenue Recognition And Deferred Revenue [Abstract]

Summary of Deferred Revenue Activity

Deferred revenue activity consists of the following (dollars in millions):

	Three Months Ended March 31,
	2020			2019
Beginning balance	$	139		$	122
Increases		11			18
Revenue earned		(10	)		(9	)
Ending balance	$	140		$	131

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Fair Value of Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2020

Fair Value Disclosures [Abstract]

Summary of Fair Value of Financial Assets and (Liabilities)

The following table summarizes the fair value of the Company’s financial assets and (liabilities) as of March 31, 2020 and December 31, 2019 (dollars in millions):

	Fair Value Measurements Using
	Quoted Prices in Active Markets for Identical Assets (Level 1)						Significant Other Observable Inputs (Level 2)						TOTAL
	March 31, 2020			December 31, 2019			March 31, 2020			December 31, 2019			March 31, 2020			December 31, 2019
Cash equivalents	$	—		$	70		$	—		$	—		$	—		$	70
Rabbi trust assets		12			12			—			—			12			12
Deferred compensation obligation		(12	)		(12	)		—			—			(12	)		(12	)
Derivative liabilities		—			—			(63	)		(34	)		(63	)		(34	)
Total	$	—		$	70		$	(63	)	$	(34	)	$	(63	)	$	36

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Accumulated Other Comprehensive Loss (Tables)

3 Months Ended

Mar. 31, 2020

Equity [Abstract]

Changes in Accumulated Other Comprehensive Loss by Component

The following tables reconcile changes in AOCL by component (net of tax, dollars in millions):

	Three months ended
	Pension and OPEB liability adjustment			Available- for-sale securities and interest rate swaps			Foreign currency items			Total
AOCL as of December 31, 2018	$	9		$	(7	)	$	(32	)	$	(30	)
Other comprehensive income before reclassifications		—			(10	)		—			(10	)
Amounts reclassified from AOCL		(3	)		—			—			(3	)
Income tax		1			2			—			3
Reclassification of stranded tax effects		8			(1	)		—			7
Net current period other comprehensive income (loss)	$	6		$	(9	)	$	—		$	(3	)
AOCL as of March 31, 2019	$	15		$	(16	)	$	(32	)	$	(33	)
AOCL as of December 31, 2019	$	8		$	(26	)	$	(34	)	$	(52	)
Other comprehensive loss before reclassifications		—			(29	)		(2	)		(31	)
Amounts reclassified from AOCL		(5	)		—			—			(5	)
Income tax		1			6			—			7
Net current period other comprehensive loss	$	(4	)	$	(23	)	$	(2	)	$	(29	)
AOCL as of March 31, 2020	$	4		$	(49	)	$	(36	)	$	(81	)

Reclassification out of Accumulated Other Comprehensive Loss

	Amounts reclassified from AOCL
AOCL Components	Three months ended March 31, 2020			Three months ended March 31, 2019			Affected line item in the Condensed Consolidated Statements of Comprehensive Income
Amortization of benefit items:
Prior service cost	$	5		$	3		Other (expense) income, net
Total reclassifications, before tax	$	5		$	3		Income before income taxes
Income tax expense		(1	)		(1	)	Income tax expense
Total reclassifications, net of tax	$	4		$	2