Commitments and Contingencies Environmental (Details) - Environmental Issue $ in Millions	3 Months Ended
	Mar. 31, 2025 USD ($) site	Mar. 31, 2024 USD ($)
Loss Contingencies [Line Items]
Number of alleged environmental contamination sites | site	185
Accrual for Environmental Loss Contingencies [Roll Forward]
Beginning balance	$ 224	$ 236
Accruals / changes in estimates	1	0
Payments	(3)	(4)
Ending balance	222	232
Current portion of ending balance	35	$ 35
Minimum
Loss Contingencies [Line Items]
Possible future costs to settle claims	200
Maximum
Loss Contingencies [Line Items]
Possible future costs to settle claims	$ 260