Nature of Operations and Significant Accounting Policies (Details) $ in Millions |
1 Months Ended | 3 Months Ended | 6 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|---|
|
Jun. 30, 2022
USD ($)
state
mi
|
Apr. 30, 2021
USD ($)
|
Jun. 30, 2022
USD ($)
state
mi
|
Mar. 31, 2022
USD ($)
|
Dec. 31, 2021
USD ($)
|
Jun. 30, 2021
USD ($)
|
Jun. 30, 2022
USD ($)
state
mi
|
Jun. 30, 2021
USD ($)
|
Mar. 26, 2021
USD ($)
phase
property
|
|
| Revenue from External Customer [Line Items] | |||||||||
| Number of rail route miles | mi | 20,000 | 20,000 | 20,000 | ||||||
| Number of states rail network serves | state | 26 | 26 | 26 | ||||||
| Proceeds from property dispositions | $ 29 | $ 227 | |||||||
| Gain recognized on property dispositions | $ 129 | $ 367 | $ 156 | $ 370 | |||||
| Virginia Line Segments | |||||||||
| Revenue from External Customer [Line Items] | |||||||||
| Number of property rights for sale | property | 3 | ||||||||
| Number of phases to complete property rights sale transaction | phase | 3 | ||||||||
| Total sale price | $ 525 | ||||||||
| Proceeds from property dispositions | $ 200 | $ 200 | |||||||
| Gain recognized on property dispositions | $ 349 | $ 122 | $ 20 | ||||||
| Sale price, period approved amount | $ 125 | ||||||||