Acquisitions and Divestitures	9 Months Ended
Acquisitions and Divestitures	Sep. 30, 2020
Business Combinations [Abstract]
Acquisitions and Divestitures	Acquisitions and Divestitures 2020 Divestitures On January 31, 2020, the Company reached an agreement to sell a small manufacturing plant in the U.K. for $12 in cash, subject to working capital and other adjustments. The operating results and assets and liabilities of this plant are included in the Engineered Structures segment. As a result of entering into the agreement to sell, the Company recognized a charge of $12 related to a non-cash impairment of the net book value of the business, primarily properties, plants, and equipment in the first quarter ended March 31, 2020. As the sale is not expected to occur, the Company changed the classification of the assets from held for sale to held for use in the second quarter ended June 30, 2020 and recorded these assets at their lower of carrying value (assuming no initial reclassification for held for sale was made) or fair value. The result was a reversal of $7 related to a non-cash impairment in the second quarter of 2020. These charges were recorded in Restructuring and other charges in the Statement of Consolidated Operations. 2019 Divestitures On December 1, 2019, the Company completed the sale of its forgings business in the U.K. for $64 in cash, which resulted in a loss on sale of $46 that was recognized in 2019 (of which $43 and $3 was recognized in the third quarter and fourth quarter of 2019, respectively) and an incremental charge of $6 related to certain post-closing adjustments in the first quarter ended March 31, 2020 and nine months ended September 30, 2020. These charges were recorded in Restructuring and other charges in the Statement of Consolidated Operations. Of the cash proceeds received, $53 was recorded as Restricted cash within Prepaid expenses and other current assets on the Consolidated Balance Sheet at December 31, 2019 as its use is subject to restriction by the U.K. pension authority until certain U.K. pension plan changes were made and approved. In the second quarter of 2020, the restriction was removed, and the proceeds were reclassified to Cash and cash equivalents. The forgings business primarily produced steel, titanium, and nickel based forged components for aerospace, mining, and off-highway markets and its operating results and assets and liabilities were included in the Engine Products segment. The sale remains subject to certain remaining post-closing adjustments. This business generated third-party sales of $30 and $95 in the third quarter and nine months ended September 30, 2019, respectively, and had 540 employees at the time of divestiture. On May 31, 2019, the Company sold a small additive manufacturing facility within the Engineered Structures segment for $1 in cash, which resulted in a loss of $13 in the second quarter ended June 30, 2019 and nine months ended September 30, 2019 related to the non-cash impairment of the net book value of the business recorded in Restructuring and other charges in the Statement of Consolidated Operations. On August 15, 2019, the Company sold inventories and properties, plants and equipment related to a small energy business within the Engineered Structures segment for $13 in cash. As the sale was substantially complete as of June 30, 2019, and the sale price was estimated to be less than the carrying value, the Company recognized a charge of $9 in the second quarter ended June 30, 2019 and nine months ended September 30, 2019 related to inventory impairment and recorded the charge in Cost of goods sold in the Statement of Consolidated Operations.