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Debt (Narrative) (Details) - USD ($) $ in Thousands | 6 Months Ended |  |  |
--- | --- | --- | --- | ---
Aug. 31, 2024 | Aug. 31, 2023 | Jul. 23, 2024 | Jun. 26, 2024 | Feb. 29, 2024
Debt Instrument [Line Items] |  |  |  |  |
Outstanding Balance | $ 18,105,203 |  |  |  | $ 17,959,656
Capitalized interest | 3,100 | $ 2,900 |  |  |
Credit Facility |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Maximum borrowing capacity | 2,000,000 |  |  |  |
Unused capacity | 2,000,000 |  |  |  |
Senior Notes [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Outstanding Balance | $ 400,000 |  |  |  |
Financing obligation | Minimum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Initial lease terms, in years | 15 years |  |  |  |
Financing obligation | Maximum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Initial lease terms, in years | 20 years |  |  |  |
October 2021 Term Loan |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Outstanding Balance | $ 700,000 |  |  |  |
Long-Term Debt, Percentage Bearing Variable Interest, Percentage Rate | 6.35% |  |  |  |
Asset-Backed Securities | Prime Auto Loans Receivable |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Asset-Backed Securities, at Carrying Value |  |  | $ 1,400,000 |  |
Asset-Backed Securities | Non-Prime Auto Loans Receivable |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Asset-Backed Securities, at Carrying Value |  |  |  | $ 625,000 |

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