Commitments and Contingencies Personal Injury (Details) - Personal Injury - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Loss Contingency Accrual [Roll Forward]
Beginning balance	$ 264	$ 263
Accruals / changes in estimates	56	42
Payments	(56)	(47)
Ending balance	264	258
Current portion of ending balance	85	$ 90
Minimum
Loss Contingencies [Line Items]
Loss contingency, estimate of possible loss	220
Maximum
Loss Contingencies [Line Items]
Loss contingency, estimate of possible loss	$ 340