(Schedule of Income Before Income Tax, Domestic and Foreign) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
U.S.									$ 727	$ 1,342	$ 1,450
Non-U.S.									(77)	262	331
Earnings (loss) from continuing operations before income taxes and equity earnings	$ 123	$ 282	$ 261	$ (16)	$ 400	$ 452	$ 334	$ 418	$ 650	$ 1,604	$ 1,781