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Restructuring and Other Charges - Schedule of Restructuring and Other Charges (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Restructuring and Related Activities [Abstract] |  |  |
Non-cash asset impairments | $ 570 | $ 13 | $ 58
Layoff costs | 103 | 20 | 64
Pension and Other postretirement benefits - net settlement and curtailment charges | (49) | 91 | 0
Net (gain) loss on divestitures of assets and businesses (S) | (20) | (109) | 57
Other | 26 | 13 | (3)
Reversals of previously recorded layoff costs | (10) | (19) | (11)
Restructuring and other charges | $ 620 | $ 9 | $ 165

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