Employee Benefit Plans - Schedule of Changes in Benefit Obligation and Fair Value of Plan Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Actuarial Present Value of Benefit Obligation
Accumulated Benefit Obligation	$ 2,115	$ 2,252
Projected Benefit Obligation	2,192	2,343
Change in Projected Benefit Obligation:
Projected Benefit Obligation at Beginning of Plan Year	2,343	2,368
Service Cost	27	28
Interest Cost	106	111
Actuarial (Gain) Loss	(107)	20
Benefits Paid	(177)	(184)
Benefit Obligation at End of Plan Year	2,192	2,343
Change in Plan Assets:
Fair Value of Plan Assets at Beginning of Plan Year	2,465	2,299
Actual Return on Plan Assets	104	330
Non-qualified Employer Contributions	17	20
Benefits Paid	(177)	(184)
Fair Value of Plan Assets at End of Plan Year	2,409	2,465
Funded Status at End of Plan Year	217	122
Capitalized service costs	$ 3	$ 4