Commitments and Contingencies Environmental (Details) - Environmental Issue $ in Millions	6 Months Ended
	Jun. 30, 2024 USD ($) site	Jun. 30, 2023 USD ($)
Loss Contingencies [Line Items]
Number of alleged environmental contamination sites | site	185
Accrual for Environmental Loss Contingencies [Roll Forward]
Beginning balance	$ 236	$ 247
Accruals / changes in estimates	1	1
Payments	(8)	(9)
Ending balance	229	239
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	$ 265