Income Taxes - Summary of Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Tax Disclosure [Abstract]
Earnings before income taxes	$ 674	$ 37	$ 1,273	$ 258
Income tax expense computed at United States statutory tax rate	142	8	267	54
Valuation allowances	(1)	5	2	6
Audit and Settlements	8	5	15	17
U.S. foreign income items, net of credits	0	(2)	7	1
Changes in enacted tax rates	(14)	0	(14)	0
Divestiture tax impact	(21)	0	(21)	0
Legal entity restructuring tax impact	(46)	0	(46)	0
Other	26	1	43	11
Income tax expense (benefit) computed at effective worldwide tax rates	$ 94	$ 17	$ 253	$ 89