Debt Obligations (Credit Facilities) (Details) - USD ($)	1 Months Ended	6 Months Ended
	Jun. 30, 2026	Jun. 30, 2026	Dec. 31, 2025
Debt Instrument [Line Items]
Short-term debt	$ 269,000,000	$ 269,000,000	$ 431,000,000
Commercial paper
Debt Instrument [Line Items]
Short-term debt			0
Revolving credit facility | Commercial paper
Debt Instrument [Line Items]
Short-term debt	269,000,000	269,000,000	$ 0
Revolving credit facility | 2022 Revolving Credit Facility | Line of Credit
Debt Instrument [Line Items]
Credit facility, borrowing capacity	1,250,000,000	1,250,000,000
Revolving credit facility | 2026 Revolving Credit Facility
Debt Instrument [Line Items]
Utilized amount	0	0
Revolving credit facility | 2026 Revolving Credit Facility | Line of Credit
Debt Instrument [Line Items]
Credit facility, borrowing capacity	$ 1,500,000,000	1,500,000,000
Credit facility term	5 years
Unamortized debt issuance expense	$ (4,000,000)	(4,000,000)
Option to increase available aggregate amount	$ 1,000,000,000.0	$ 1,000,000,000.0
Revolving credit facility | 2026 Revolving Credit Facility | Line of Credit | Minimum
Debt Instrument [Line Items]
Line of credit facility, commitment fee percentage		0.08%
Revolving credit facility | 2026 Revolving Credit Facility | Line of Credit | Maximum
Debt Instrument [Line Items]
Line of credit facility, commitment fee percentage		0.15%