Earnings Per Share (Reconciliation of the Numerators and Denominators of the Basic and Diluted Per Shares) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Net Income (Loss) Available to Common Stockholders, Basic [Abstract]
Net income (numerator for basic and diluted calculations)	$ 210	$ 252
Shares:
Weighted average outstanding shares (denominator for basic calculation)	66	67
Equivalent shares from outstanding stock awards	1	1
Denominator for diluted calculation	67	68
Diluted earnings per share	$ 3.16	$ 3.72
Basic earnings per share	$ 3.20	$ 3.77
Net Income (Loss) Attributable to Noncontrolling Interest	$ 2	$ 1
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 212	$ 253