Commitments and Contingencies Personal Injury (Details) - Personal Injury - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Loss Contingency Accrual [Roll Forward]
Beginning balance	$ 265	$ 264
Accruals / changes in estimates	50	75
Payments	(59)	(89)
Ending balance	256	250
Current portion of ending balance	80	$ 85
Minimum
Loss Contingencies [Line Items]
Loss contingency, estimate of possible loss	205
Maximum
Loss Contingencies [Line Items]
Loss contingency, estimate of possible loss	$ 320