Derivative Instruments And Hedging Activities - Schedule of Interest Rate Swap (Details) - Fair Value Hedging - Interest Rate Swap - USD ($) $ in Millions	3 Months Ended	12 Months Ended
Mar. 31, 2024	Dec. 31, 2023
Derivative [Line Items]
Notional Amount	$ 2,550	$ 2,550
2017 Senior Notes due 2028
Derivative [Line Items]
Notional Amount	$ 500	$ 500
Floating Interest Rate	SOFR	SOFR
2020 Senior Notes due 2025
Derivative [Line Items]
Notional Amount	$ 300	$ 300
Floating Interest Rate	SOFR	SOFR
2014 Senior Notes due 2044
Derivative [Line Items]
Notional Amount	$ 300	$ 300
Floating Interest Rate	SOFR	SOFR
2018 Senior Notes due 2048
Derivative [Line Items]
Notional Amount	$ 300	$ 300
Floating Interest Rate	SOFR	SOFR
2018 Senior Notes due 2029
Derivative [Line Items]
Notional Amount	$ 400	$ 400
Floating Interest Rate	SOFR	SOFR
2022 Senior Notes due 2052
Derivative [Line Items]
Notional Amount	$ 500	$ 500
Floating Interest Rate	SOFR	SOFR
2022 Senior Notes due 2032
Derivative [Line Items]
Notional Amount	$ 250	$ 250
Floating Interest Rate	SOFR	SOFR

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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