Earnings Per Share Of Common Stock (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
EPS of Common Stock
Income from continuing operations		$ 416	$ 460	$ 809	$ 791
Discontinued operations, net of tax	[1]	47	(6)	47	46
Net Income		$ 463	$ 454	$ 856	$ 837
Share count information:
Weighted average number of basic shares outstanding (in shares)		544	542	544	542
Assumed exercise of dilutive stock options and awards (in shares)		1	1	1	1
Weighted average number of diluted shares outstanding		545	543	545	543
Earnings (Loss) Per Share of Common Stock:
Income from continuing operations, basic (in dollars per share)		$ 0.76	$ 0.85	$ 1.48	$ 1.46
Discontinued operations, basic (in dollars per share)		0.09	(0.01)	0.09	0.08
Basic - Earnings Per Share of Common Stock (in dollars per share)		0.85	0.84	1.57	1.54
Income from continuing operations, diluted (in dollars per share)		0.76	0.85	1.48	1.46
Discontinued operations, diluted (in dollars per share)		0.09	(0.01)	0.09	0.08
Diluted - Earnings Per Share to Common Stock (in dollars per share)		$ 0.85	$ 0.84	$ 1.57	$ 1.54

[1] Net of income tax expense (benefits) of $(47) million for the three and nine months ended September 30, 2021, and $6 million and $(29) million for the three and nine months ended September 30, 2020, respectively.