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v3.21.2

Nature of Operations and Significant Accounting Policies (Details) $ in Millions |  |  |  | 3 Months Ended | 6 Months Ended | 24 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jul. 01, 2021 USD ($) | Jun. 04, 2021 USD ($) shares | Apr. 14, 2021 USD ($) | Dec. 31, 2021 USD ($) | Jun. 30, 2021 USD ($) state mi | Jun. 30, 2020 USD ($) | Jun. 30, 2021 USD ($) state mi | Jun. 30, 2020 USD ($) | Mar. 26, 2023 | May 12, 2021 terminalAndFacility | Mar. 26, 2021 USD ($) phase property | Dec. 31, 2020 USD ($) | [1] | Nov. 30, 2020 mi
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Total number of rail route miles | mi |  |  |  |  | 19,500 |  | 19,500 |  |  |  |  |  |
Number of states rail network serves | state |  |  |  |  | 23 |  | 23 |  |  |  |  |  |
Gain recognized on property dispositions |  |  |  |  | $ 367 | $ 11 | $ 370 | $ 29 |  |  |  |  |
Proceeds from property dispositions |  |  |  |  |  |  | 227 | $ 45 |  |  |  |  |
Stock split conversion ratio |  | 3 |  |  |  |  |  |  |  |  |  |  |
Number of additional shares of common stock received for each share held after stock split (in shares) | shares |  | 2 |  |  |  |  |  |  |  |  |  |  |
Reclassification to other capital |  |  |  |  | 11,723 |  | 11,723 |  |  |  |  | $ 11,259 |
Reclassification from retained earnings |  |  |  |  | $ 0 |  | $ 0 |  |  |  |  | $ 152 |
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 |  |
Gain recognized on property dispositions |  |  | $ 349 |  |  |  |  |  |  |  |  |  |
Proceeds from property dispositions |  |  | $ 200 |  |  |  |  |  |  |  |  |  |
Revision of Prior Period, Reclassification, Adjustment | Stock split reclassification adjustment |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification to other capital |  | $ (1,000) |  |  |  |  |  |  |  |  |  |  |
Reclassification from retained earnings |  | $ 1,000 |  |  |  |  |  |  |  |  |  |  |
Subsequent Event | Forecast | Virginia Line Segments |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from property dispositions |  |  |  | $ 168 |  |  |  |  |  |  |  |  |
Period to complete closing on the remaining sale transaction |  |  |  |  |  |  |  |  | 2 years |  |  |  |
Acquisition of Quality Carriers | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase price in cash paid for acquisition | $ 546 |  |  |  |  |  |  |  |  |  |  |  |
Acquisition of Quality Carriers | Acquisition of Quality Carriers | United States, Canada and Mexico |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of terminals and facilities (over) | terminalAndFacility |  |  |  |  |  |  |  |  |  | 100 |  |  |
Acquisition of Pan-Am | Acquisition of Pan-Am |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Total number of rail route miles | mi |  |  |  |  |  |  |  |  |  |  |  |  | 1,200
Number of partial interests in rail route miles (more than) | mi |  |  |  |  |  |  |  |  |  |  |  |  | 600
[1] | Certain prior year data has been retroactively adjusted to reflect the stock split effective June 28, 2021. See accompanying notes to consolidated financial statements.

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