Pension and Other Postretirement Benefits - Schedule of Amounts Reclassified from Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2025	Mar. 31, 2025	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2025	Jun. 30, 2024
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Other pension and postretirement	$ 1		$ (13)		$ (4)	$ (24)
Income before taxes and equity in net earnings of affiliates	293		265		565	399
Provision for income taxes	(78)		(54)		(124)	(94)
Net income	216	$ 227	207	$ 93	443	300
Reclassification out of Accumulated Other Comprehensive Income | Defined benefit plans adjustment
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Income before taxes and equity in net earnings of affiliates	3		13		6	25
Provision for income taxes	(1)		(3)		(2)	(5)
Net income	2		10		4	20
Reclassification out of Accumulated Other Comprehensive Income | Actuarial losses
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Other pension and postretirement	$ 3		$ 13		$ 6	$ 25