Long-Term Debt - Debt Retirements (Details) - USD ($) $ in Millions	Dec. 31, 2024	Nov. 30, 2024	Mar. 31, 2024
Debt Instrument [Line Items]
Aggregate principal amount			$ 7,548
Senior Notes
Debt Instrument [Line Items]
Aggregate principal amount	$ 357	$ 324
Senior Notes | 3.400% Senior Secured Notes Due 2027 Unsecured
Debt Instrument [Line Items]
Stated interest rate	3.40%	3.40%
Aggregate principal amount	$ 77	$ 1
Senior Notes | 4.625% Senior Notes Due 2027
Debt Instrument [Line Items]
Stated interest rate	4.625%	4.625%
Aggregate principal amount	$ 280	$ 48
Senior Notes | 4.250% Senior Notes Due 2028
Debt Instrument [Line Items]
Stated interest rate	4.25%	4.25%
Aggregate principal amount		$ 275