Other Financial Data - Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Sep. 05, 2019
Basic earnings per common share:
Earnings	$ 1,577	$ 1,709	$ 1,363
Weighted average common shares outstanding (in shares)	166.8	167.0	167.5
Per share amount (USD per share)	$ 9.45	$ 10.23	$ 8.14
Diluted earnings per common share:
Earnings	$ 1,577	$ 1,709	$ 1,363
Weighted average common shares outstanding (in shares)	166.8	167.0	167.5
Add effect of dilutive securities:
Share-based awards (in shares)	4.0	3.7	3.7
Diluted weighted average common shares outstanding (in shares)	170.8	172.1	171.9
Per share amount (USD per share)	$ 9.23	$ 9.93	$ 7.93
1.75% senior convertible notes due 2024
Add effect of dilutive securities:
Senior Convertible Notes (in shares)	0.0	1.5	0.7
Convertible Debt \| 1.75% senior convertible notes due 2024
Add effect of dilutive securities:
Interest rate	1.75%	1.75%	1.75%	1.75%

Contractual interest rate for funds borrowed, under the debt agreement.

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