Debt - Credit Facility (Details) - USD ($)	Dec. 31, 2024	Dec. 31, 2023
Line of Credit Facility [Line Items]
Credit Facility	$ 0	$ 0
Commercial paper outstanding	0	0
Variable rate unsecured credit facility
Line of Credit Facility [Line Items]
Credit Facility commitment	2,250,000,000	2,250,000,000
Commercial paper outstanding	0	0
Letters of credit outstanding	(1,714,000)	(1,914,000)
Total Credit Facility available	2,248,286,000	2,248,086,000
Additional letters of credit
Line of Credit Facility [Line Items]
Letters of credit outstanding	$ (45,910,000)	$ (58,116,000)