Acquisitions	12 Months Ended
Dec. 31, 2015
Business Combinations [Abstract]
Acquisitions	Acquisitions On February 7, 2014, the Company acquired 85% of Dynamic Flowform Corp. (“Dynamic Flowform”) for $72.9 million of cash consideration, net of cash acquired. The Dynamic Flowform acquisition was treated as an asset purchase for tax purposes. The holders of the 15% noncontrolling interest have a put option requiring the Company to purchase their equity interest (see Note 18 for additional explanation). The Company also incurred $0.7 million of pre-tax costs related to the acquisition, consisting primarily of professional fees, which were recorded in selling and administrative expenses in the 2014 consolidated statement of operations. Based in Billerica, MA, Dynamic Flowform, which has been renamed ATI Flowform Products, uses precision flowforming process technologies to produce thin-walled components in net or near-net shapes across multiple alloy systems, including nickel-based alloys and superalloys, titanium and titanium alloys, zirconium alloys, and specialty and stainless alloys. Management expects this acquisition to expand the Company’s capabilities to produce specialty materials parts and components, primarily in the aerospace and defense, and oil & gas/chemical & hydrocarbon processing industry markets. ATI Flowform Products results are included in the High Performance Materials & Components segment from the date of the acquisition. The purchase price allocation included technology, trademarks and customer intangible assets of $21.4 million, which are being amortized over a 23 year weighted average life, and goodwill of $46.8 million, which is deductible for tax purposes. The final allocation of the purchase price was completed in the second quarter of 2014. In addition, on June 12, 2014, the Company acquired Hanard Machine, Inc. (“Hanard”) for $20.5 million of cash consideration, net of cash acquired, including $20.0 million paid in 2014 and $0.5 million paid in 2015. Located in Salem, OR, Hanard performs precision machining on parts and components made from titanium alloys, nickel-based alloys and superalloys, aluminum, specialty steel, and other ferrous and non-ferrous metals. The business operates as ATI Cast Products Salem Operations, and is reported as a part of the High Performance Materials & Components segment from the date of the acquisition. Management expects this acquisition to expand the Company’s capabilities to produce finished specialty materials parts and components and reinforces the Company’s important aerospace supply chain role. The purchase price allocation included technology and customer intangible assets of $4.3 million, which are being amortized over a 20 year life, and goodwill of $8.4 million, which is deductible for tax purposes. The final allocation of the purchase price was completed in the second quarter of 2015. Pro forma financial information has not been included because these acquisitions did not meet certain significance thresholds individually or in the aggregate.

Acquisitions

12 Months Ended

Dec. 31, 2015

On February 7, 2014, the Company acquired 85% of Dynamic Flowform Corp. (“Dynamic Flowform”) for $72.9 million of cash consideration, net of cash acquired. The Dynamic Flowform acquisition was treated as an asset purchase for tax purposes. The holders of the 15% noncontrolling interest have a put option requiring the Company to purchase their equity interest (see Note 18 for additional explanation). The Company also incurred $0.7 million of pre-tax costs related to the acquisition, consisting primarily of professional fees, which were recorded in selling and administrative expenses in the 2014 consolidated statement of operations.

Based in Billerica, MA, Dynamic Flowform, which has been renamed ATI Flowform Products, uses precision flowforming process technologies to produce thin-walled components in net or near-net shapes across multiple alloy systems, including nickel-based alloys and superalloys, titanium and titanium alloys, zirconium alloys, and specialty and stainless alloys. Management expects this acquisition to expand the Company’s capabilities to produce specialty materials parts and components, primarily in the aerospace and defense, and oil & gas/chemical & hydrocarbon processing industry markets. ATI Flowform Products results are included in the High Performance Materials & Components segment from the date of the acquisition.

The purchase price allocation included technology, trademarks and customer intangible assets of $21.4 million, which are being amortized over a 23 year weighted average life, and goodwill of $46.8 million, which is deductible for tax purposes. The final allocation of the purchase price was completed in the second quarter of 2014.

In addition, on June 12, 2014, the Company acquired Hanard Machine, Inc. (“Hanard”) for $20.5 million of cash consideration, net of cash acquired, including $20.0 million paid in 2014 and $0.5 million paid in 2015. Located in Salem, OR, Hanard performs precision machining on parts and components made from titanium alloys, nickel-based alloys and superalloys, aluminum, specialty steel, and other ferrous and non-ferrous metals. The business operates as ATI Cast Products Salem Operations, and is reported as a part of the High Performance Materials & Components segment from the date of the acquisition. Management expects this acquisition to expand the Company’s capabilities to produce finished specialty materials parts and components and reinforces the Company’s important aerospace supply chain role. The purchase price allocation included technology and customer intangible assets of $4.3 million, which are being amortized over a 20 year life, and goodwill of $8.4 million, which is deductible for tax purposes. The final allocation of the purchase price was completed in the second quarter of 2015.

Pro forma financial information has not been included because these acquisitions did not meet certain significance thresholds individually or in the aggregate.