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Fair Value - Schedule of Fixed-Rate Senior Notes, Fair Value (Details) - Fair Value, Inputs, Level 2 - Senior Notes	Mar. 31, 2023 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed rate senior notes carrying amount	$ 6,700,000,000
Senior Notes Due 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Principal Amount	$ 700,000,000
Interest rate (as a percent)	3.65%
Fair value	$ 695,000,000
Senior Notes Due in 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Principal Amount	$ 500,000,000
Interest rate (as a percent)	2.35%
Fair value	$ 482,000,000
Senior Notes Due 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Principal Amount	$ 300,000,000
Interest rate (as a percent)	3.85%
Fair value	$ 295,000,000
Senior Unsecured Notes Due September 15, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Principal Amount	$ 700,000,000
Interest rate (as a percent)	1.00%
Fair value	$ 641,000,000
Senior Notes Due 2026
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Principal Amount	$ 700,000,000
Interest rate (as a percent)	3.80%
Fair value	$ 679,000,000
Senior Unsecured Notes Due September 15, 2027
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Principal Amount	$ 700,000,000
Interest rate (as a percent)	1.40%
Fair value	$ 609,000,000
Senior Notes Due 2028
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Principal Amount	$ 800,000,000
Interest rate (as a percent)	4.20%
Fair value	$ 788,000,000
Senior Notes Due in 2029
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Principal Amount	$ 700,000,000
Interest rate (as a percent)	2.95%
Fair value	$ 629,000,000
Senior Notes Due June 2030
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Principal Amount	$ 600,000,000
Interest rate (as a percent)	2.00%
Fair value	$ 497,000,000
Senior Unsecured Notes Due February 15, 2031
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Principal Amount	$ 1,000,000,000
Interest rate (as a percent)	1.75%
Fair value	$ 803,000,000

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Face (par) amount of debt instrument at time of issuance.

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