Share-Based Compensation - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation expense	$ 141	$ 107	$ 128
Share-based compensation expense related income tax benefit	88	64	64
Capitalized share-based compensation expense	$ 0	$ 0	$ 0
Closing stock price (in dollars per share)	$ 410.71
Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of shares issues in settlement of a vested award	0.00%
Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of shares issues in settlement of a vested award	200.00%
Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-average fair values of options granted (in dollars per share)	$ 83.69	$ 45.07	$ 37.80
Total intrinsic value of stock options exercised	$ 283	$ 176	$ 294
Cash received from option exercises	33	36	50
Total cash tax benefit	86	$ 61	$ 64
Unrecognized compensation expense	$ 17
Weighted average performance period (years)	1 year
Granted (in shares)	361,000
Performance-Based
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation expense	$ 48
Granted (in dollars per share)	$ 385.10
Granted (in shares)	342,000
Awards to be settled in cash (in shares)	11,000
Performance Shares ROC
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted (in dollars per share)	$ 340.80	$ 257.63	$ 241.10
Performance Shares TSR
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted (in dollars per share)	$ 489.33	301.42	301.04
Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation expense	$ 42
Granted (in dollars per share)	$ 332.69	$ 260.27	$ 242.60
Granted (in shares)	160,839
Awards to be settled in cash (in shares)	17,000
2021 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares authorized for grant (in shares)	7,661,431
Authorized for issuance (in shares)	2,452,443
Service period	3 years
2021 Plan | Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Service period	1 year
2021 Plan | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Exercisable period	10 years
2021 Plan | Performance-Based
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Service period	3 years
Granted (in shares)	341,915
2019 Plan | Performance-Based
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Service period	3 years
Upward adjustment to awards granted (in shares)	201,120