Debt - Basic Terms of Senior Unsecured Notes (Details) - 12 months ended Dec. 31, 2022	GBP (£)	EUR (€)	USD ($)
2.550% Senior Unsecured Notes due 2023 [Member]
Debt Instrument [Line Items]
Offering Completion Date	Dec. 05, 2019
Debt instrument maturity date	Dec. 05, 2023
Par Value | £	£ 400,000,000
% of Par Value	100.00%
Interest Payment Frequency	Annually
3.325% Senior Unsecured Notes Due 2025 [Member]
Debt Instrument [Line Items]
Offering Completion Date	Mar. 24, 2017
Debt instrument maturity date	Mar. 24, 2025
Par Value | €		€ 500,000,000
% of Par Value	100.00%
Interest Payment Frequency	Annually
0.993% Senior Unsecured Notes due 2026 [Member]
Debt Instrument [Line Items]
Offering Completion Date	Oct. 06, 2021
Debt instrument maturity date	Oct. 15, 2026
Par Value | €		€ 500,000,000
% of Par Value	100.00%
Interest Payment Frequency	Annually
2.500% Senior Unsecured Notes due 2026 [Member]
Debt Instrument [Line Items]
Offering Completion Date	Mar. 24, 2021
Debt instrument maturity date	Mar. 24, 2026
Par Value | £	£ 500,000,000
% of Par Value	99.937%
Interest Payment Frequency	Annually
5.250% Senior Unsecured Notes Due 2026 [Member]
Debt Instrument [Line Items]
Offering Completion Date	Jul. 22, 2016
Debt instrument maturity date	Aug. 01, 2026
Par Value | $			$ 500,000,000
% of Par Value	100.00%
Interest Payment Frequency	Semi-annually
5.000% Senior Unsecured Notes Due 2027 [Member]
Debt Instrument [Line Items]
Offering Completion Date	Sep. 07, 2017
Debt instrument maturity date	Oct. 15, 2027
Par Value | $			1,400,000,000
% of Par Value	100.00%
Interest Payment Frequency	Semi-annually
3.692% Senior Unsecured Notes due 2028 [Member]
Debt Instrument [Line Items]
Offering Completion Date	Dec. 05, 2019
Debt instrument maturity date	Jun. 05, 2028
Par Value | £	£ 600,000,000
% of Par Value	99.998%
Interest Payment Frequency	Annually
4.625% Senior Unsecured Notes Due 2029 [Member]
Debt Instrument [Line Items]
Offering Completion Date	Jul. 26, 2019
Debt instrument maturity date	Aug. 01, 2029
Par Value | $			900,000,000
% of Par Value	99.50%
Interest Payment Frequency	Semi-annually
3.375% Senior Unsecured Notes Due 2030 [Member]
Debt Instrument [Line Items]
Offering Completion Date	Mar. 24, 2021
Debt instrument maturity date	Apr. 24, 2030
Par Value | £	£ 350,000,000
% of Par Value	99.448%
Interest Payment Frequency	Annually
3.500% Senior Unsecured Notes Due 2031 [Member]
Debt Instrument [Line Items]
Offering Completion Date	Dec. 04, 2020
Debt instrument maturity date	Mar. 15, 2031
Par Value | $			$ 1,300,000,000
% of Par Value	100.00%
Interest Payment Frequency	Semi-annually