Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income before non-controlling interests	$ 1,773	$ 1,670	$ 1,512
Other comprehensive (loss) income, before tax:
Foreign currency translation adjustments	148	(529)	717
Unrealized investment (loss) income	0	0	(7)
(Loss) gain related to pension/post-retirement plans	(702)	(91)	408
Other comprehensive (loss) income, before tax	(554)	(620)	1,118
Income tax (credit) expense on other comprehensive (loss) income	(146)	(30)	68
Other comprehensive (loss) income, net of tax	(408)	(590)	1,050
Comprehensive income	1,365	1,080	2,562
Less: Comprehensive income attributable to non-controlling interests	31	20	20
Comprehensive income attributable to the Company	$ 1,334	$ 1,060	$ 2,542