Share-based Compensation - Narrative (Details)	12 Months Ended
	Dec. 31, 2023 USD ($) Grantees $ / shares shares	Dec. 31, 2022 USD ($) $ / shares shares	Dec. 31, 2021 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issuance of shares under employee stock compensation plans (in shares) | shares	265,000
Share-based compensation	$ 125,000,000	$ 99,000,000	$ 101,000,000
Tax benefit from compensation expense	$ 21,000,000	18,000,000	17,000,000
Stock options outstanding | shares	0
Cash received from exercise of stock options		7,000,000	10,000,000
Number of grantees benefited from modifications | Grantees	464
Incremental compensation cost recognized over service periods	$ 14,000,000
Employee Services Share Based Compensation, Tax Benefit Realized From Vesting Of RSUs	9,000,000	23,000,000	$ 12,000,000
Transaction and Transformation [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Incremental compensation cost recognized over service periods	6,000,000
Transformation Program [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation	$ 31,000,000	$ 27,000,000
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted | shares	0	0	0
Time-based Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercised, Outstanding (in shares) | shares	15,000
Exercised, Weighted Average Exercise Price | $ / shares	$ 117.36
Options, exercises in period, intrinsic value		$ 1,000,000	$ 7,000,000
Performance-based Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, exercises in period, intrinsic value		9,000,000	23,000,000
Employee Service Share-based Compensation, Tax Benefit from Exercise of Stock Options	$ 6,000,000	$ 11,000,000	$ 8,000,000
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSU vested in prior year | shares	93,000
Compensation cost not yet recognized	$ 41,000,000
Compensation cost not yet recognized, period for recognition	1 year 6 months
Vested (shares) | shares	122,000	35,000	15,000
Vested, Average Intrinsic Value (in dollars per share) | $ / shares	$ 221.26	$ 202.8	$ 250.83
Granted units | shares	156,000
Performance-Based Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost not yet recognized	$ 74,000,000
Compensation cost not yet recognized, period for recognition	1 year 10 months 24 days
Vested (shares) | shares	273,000	32,000	133,000
Vested, Average Intrinsic Value (in dollars per share) | $ / shares	$ 234.44	$ 197.55	$ 224.79
Granted units | shares	231,000
Phantom RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost not yet recognized		$ 0
Granted units | shares	0	0	0
Cash payments made on stock awards		$ 32,000,000
Liability recognized		$ 0
2012 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant | shares	3,867,028