Basis of Presentation (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Increase of other expense	$ 2	$ (28)
Restructuring reserves		60
Reclassification adjustment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Decrease of net loss from discontinued operations		1
Increase of other expense		$ 1

Amount after tax of income (loss) from a discontinued operation including the portion attributable to the noncontrolling interest. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

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+ Details