Condensed Consolidated Statements of Shareholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Common equities	Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income	Treasury Stock
Beginning Balance at Dec. 31, 2020		$ 397	$ 1,328	$ 10,085	$ 769	$ (1,790)
Share-based awards		0	(16)			12
Share-based compensation			9
Other			1
Net Income (Loss)	$ 620			620
Dividends declared				(102)
Other comprehensive loss	(144)				(144)
Shares acquired - share repurchase authorization						(28)
Shares acquired - share-based compensation plans						(3)
Ending Balance at Mar. 31, 2021	11,138	$ 397	1,322	10,603	625	(1,809)
Beginning Balance (in shares) at Dec. 31, 2020		160.9
Share-based awards (in shares)		0.4
Shares acquired - share repurchase authorization (in shares)		(0.3)
Ending Balance (in shares) at Mar. 31, 2021		161.0
Dividends declared per common share		$ 0.63
Beginning Balance at Dec. 31, 2021	13,105	$ 397	1,356	12,625	648	(1,921)
Share-based awards		0	(14)			9
Share-based compensation			11
Other			1
Net Income (Loss)	(273)			(273)
Dividends declared				(111)
Other comprehensive loss	(589)				(589)
Shares acquired - share repurchase authorization						(45)
Shares acquired - share-based compensation plans						(2)
Ending Balance at Mar. 31, 2022	$ 12,092	$ 397	$ 1,354	$ 12,241	$ 59	$ (1,959)
Beginning Balance (in shares) at Dec. 31, 2021		160.3
Share-based awards (in shares)		0.4
Shares acquired - share repurchase authorization (in shares)		(0.4)
Ending Balance (in shares) at Mar. 31, 2022		160.3
Dividends declared per common share		$ 0.69