Derivative Instruments - Narrative (Details)	12 Months Ended
	Dec. 31, 2023 USD ($) tranche	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	May 31, 2021 USD ($)
Derivatives, Fair Value [Line Items]
Notional amount	$ 3,924,000,000	$ 4,322,000,000
Net derivative losses reclassified into earnings within next 12 months	55,000,000
Interest rate cash flow hedges to be reclassified into earnings within next 12 months	8,000,000
Value of shares purchased	2,000,000	2,000,000
Derivative assets	396,000,000	336,000,000
Adyen
Derivatives, Fair Value [Line Items]
Value of shares purchased			$ 1,100,000,000
Adyen
Derivatives, Fair Value [Line Items]
Payments to acquire equity investment with readily determinable fair value			110,000,000
Fair value of shares sold	0	800,000,000	0
Senior Notes
Derivatives, Fair Value [Line Items]
Face amount			$ 2,500,000,000
Senior Notes | Senior Unsecured Notes Due 2025, 2027 and 2032
Derivatives, Fair Value [Line Items]
Face amount		1,200,000,000
Senior Notes | Senior unsecured notes due 2026, 2031 and 2051
Derivatives, Fair Value [Line Items]
Face amount				$ 2,500,000,000
Foreign Exchange Contract
Derivatives, Fair Value [Line Items]
Offset asset	16,000,000
Offset liability	16,000,000
Net derivative assets	$ 16,000,000
Forward-Starting Interest Rate Swap
Derivatives, Fair Value [Line Items]
Deferred gain on derivative contract		25,000,000		$ 45,000,000
Warrant
Derivatives, Fair Value [Line Items]
Percent of shares acquirable	5.00%
Warrant term	7 years
Number of tranches | tranche	4
Maximum number of tranches vesting per year | tranche	2
Interest Rate Contract
Derivatives, Fair Value [Line Items]
Offset asset	$ 0
Offset liability	$ 0
Designated as Hedging Instrument | Foreign Exchange Contract | Minimum
Derivatives, Fair Value [Line Items]
Derivative term	1 month
Designated as Hedging Instrument | Foreign Exchange Contract | Maximum
Derivatives, Fair Value [Line Items]
Derivative term	1 year
Designated as Hedging Instrument | Interest Rate Swap
Derivatives, Fair Value [Line Items]
Derivative term	10 years
Designated as Hedging Instrument | Cash Flow Hedging | Foreign Exchange Contract
Derivatives, Fair Value [Line Items]
Notional amount	$ 1,699,000,000	1,741,000,000
Designated as Hedging Instrument | Cash Flow Hedging | Foreign Exchange Contract | Maximum
Derivatives, Fair Value [Line Items]
Derivative term	24 months
Designated as Hedging Instrument | Cash Flow Hedging | Forward-Starting Interest Rate Swap | Maximum
Derivatives, Fair Value [Line Items]
Derivative term	10 years
Designated as Hedging Instrument | Cash Flow Hedging | Interest Rate Contract
Derivatives, Fair Value [Line Items]
Notional amount	$ 0	$ 400,000,000