Earnings Per Share Data (Computations) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Earnings Per Share [Abstract]
Net income	$ 403	$ 283	$ 976	$ 938
Basic
Basic (in shares)	271.1	271.3	271.2	271.5
Diluted
Basic (in shares)	271.1	271.3	271.2	271.5
Diluted effect of stock-based awards under compensation plans (in shares)	1.2	1.4	1.2	1.2
Total (in shares)	272.3	272.7	272.4	272.7
Earnings per share
Basic earnings per share (in usd per share)	$ 1.49	$ 1.04	$ 3.60	$ 3.46
Diluted earnings per share (in usd per share)	$ 1.48	$ 1.04	$ 3.58	$ 3.44