Employee Benefits - Funded Status of Pension Plans Recognized in Balance Sheets (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Funded status	$ (40)	$ (95)
Net prepaid pension cost recognized consists of:
Noncurrent assets	80	34
Current liabilities	(13)	(14)
Noncurrent liabilities	(107)	(115)
Net prepaid pension cost recognized	(40)	(95)
Net unrecognized losses (gains)	415	384
Net unrecognized prior service credit	0	0
Total unrecognized AOCI	415	384
Postretirement Benefit Plan
Net prepaid pension cost recognized consists of:
Net unrecognized losses (gains)	(8)	(9)
Net unrecognized prior service credit	(9)	(11)
Total unrecognized AOCI	$ (17)	$ (20)