CONDENSED CONSOLIDATED COMPREHENSIVE INCOME STATEMENTS (Unaudited) - USD ($) $ in Millions	3 Months Ended							9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019		Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Total Comprehensive Earnings (Note 11)	$ 770	$ 519	$ 773	$ 863	[1]	$ 874	$ 836	$ 2,062	$ 2,573	[1]

[1] Certain prior year data has been reclassified to conform to the current presentation.