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Financial Instruments - Narratives (Details) € in Millions, £ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2022 GBP (£)	Dec. 31, 2022 EUR (€)	Dec. 31, 2021 GBP (£)	Dec. 31, 2021 EUR (€)
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Net proceeds from settlement of existing cross-currency interest rate swaps	$ (726)	$ 24	$ 0
Net Investment Hedging \| Senior Euro Notes Maturing 2023 to 2039 and ECP Notes \| Senior Notes
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Notional amount \| €					€ 7,646		€ 8,275
Interest rate swap \| Fair Value Hedging
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Notional amount	1,854	1,854		£ 925	500	£ 925	500
Derivative liability fair value	578	85
Interest rate swap \| Net Investment Hedging
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Derivative liability fair value		258
Derivative asset fair value	264
Currency forward contract \| Net Investment Hedging
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Notional amount \| £				726		1,193
Loss on net investment hedge	$ 1,034	$ 878	$ (951)
Cross currency swap \| Net Investment Hedging
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Notional amount				£ 2,580	€ 6,343	£ 2,345	€ 5,906