Casualty, Environmental and Other Reserves - Narrative (Details) |
Jun. 01, 2021
USD ($)
|
May 31, 2021
USD ($)
|
Dec. 31, 2021
USD ($)
claim
site
|
Dec. 31, 2020
USD ($)
|
Dec. 31, 2019
USD ($)
|
Dec. 31, 2018
USD ($)
|
---|---|---|---|---|---|---|
Loss Contingencies [Line Items] | ||||||
Reserves | $ 368,000,000 | $ 314,000,000 | $ 305,000,000 | $ 324,000,000 | ||
Casualty Reserves | ||||||
Loss Contingencies [Line Items] | ||||||
Reserves | $ 180,000,000 | 196,000,000 | 187,000,000 | 199,000,000 | ||
Self-insured retention amount per injury | $ 100,000,000 | $ 75,000,000 | ||||
Individual claims expected to exceed self-insured retention amount | claim | 0 | |||||
Personal Injury | ||||||
Loss Contingencies [Line Items] | ||||||
Reserves | $ 118,000,000 | 131,000,000 | ||||
Environmental | ||||||
Loss Contingencies [Line Items] | ||||||
Reserves | $ 108,000,000 | 76,000,000 | 74,000,000 | 80,000,000 | ||
Environmental impaired sites | site | 220 | |||||
Other | ||||||
Loss Contingencies [Line Items] | ||||||
Reserves | $ 80,000,000 | $ 42,000,000 | $ 44,000,000 | $ 45,000,000 |