Condensed Consolidated Statement of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income from continuing and discontinued operations	$ 794	$ 14
Other comprehensive income (loss), before tax:
Foreign currency translation adjustments	(176)	(1,453)
Pension and postretirement benefit plans adjustments	54	110
Change in unrealized cash flow hedging	(60)	(374)
Other comprehensive income (loss), before tax	(182)	(1,717)
Income tax (expense) benefit related to items of other comprehensive income (loss)	(5)	70
Other comprehensive income (loss), net of tax	(187)	(1,647)
Comprehensive income (loss)	607	(1,633)
Less: Comprehensive income attributable to noncontrolling interest	41	91
Comprehensive income (loss) attributable to common shareowners	$ 566	$ (1,724)