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Debt (Narrative) (Details) - USD ($) | 12 Months Ended
--- | ---
Feb. 28, 2021 | Feb. 29, 2020 | Feb. 28, 2019
Debt Instrument [Line Items] |  |  |
Long-term Debt | $ 14,619,919,000 | $ 14,944,055,000 |
Interest Paid, Capitalized, Investing Activities | 3,300,000 | $ 7,000,000.0 | $ 6,400,000
Credit Facility |  |  |
Debt Instrument [Line Items] |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | 1,450,000,000 |  |
Line of Credit Facility, Remaining Borrowing Capacity | $ 1,450,000,000 |  |
Debt, Weighted Average Interest Rate | 1.74% | 3.23% | 3.50%
Term Loan [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate | 1.02% |  |
Long-term Debt | $ 300,000,000 |  |
Senior Notes [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term Debt | $ 500,000,000 |  |
Minimum | Financing Obligation |  |  |
Debt Instrument [Line Items] |  |  |
Initial Lease Terms | 15 years |  |
Maximum | Financing Obligation |  |  |
Debt Instrument [Line Items] |  |  |
Initial Lease Terms | 20 years |  |

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