EBPs Funded Status (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Contribution Plan
Percentage of eligible compensation the employer will match of employee contributions		6.00%
Employer's contributions charged to expense under defined contribution plan		$ 69	$ 60	$ 53
Pension Benefits [Member]
Change in benefit obligation:
Benefit obligation at beginning of year		1,006	940
Service cost		25	23	28
Interest cost		47	46	31
Plan participants’ contributions		0	0
Benefits paid		(73)	(71)
Net actuarial loss (gain) (1)	[1]	(65)	68
Settlements		(3)	0
Net increase (decrease) in benefit obligation		(69)	66
Benefit obligation at end of year		937	1,006	940
Other Postretirement Benefits [Member]
Change in benefit obligation:
Benefit obligation at beginning of year		145	152
Service cost		1	1	1
Interest cost		7	7	6
Plan participants’ contributions		2	2
Benefits paid		(11)	(13)
Net actuarial loss (gain) (1)	[1]	(12)	(4)
Settlements		0	0
Net increase (decrease) in benefit obligation		(13)	(7)
Benefit obligation at end of year		$ 132	$ 145	$ 152

[1] 2024 amounts are due primarily to changes in the following factors: Pension Benefits - discount rate assumptions and interest crediting rate assumption; Other Postretirement Benefits - discount rate assumption. 2023 amounts are due primarily to changes in the following factors: Pension Benefits - interest crediting rate assumption and discount rate assumptions.