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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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Initial Lease Terms.

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Weighted average interest rate of debt outstanding.

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Amount of cash paid for interest capitalized, classified as investing activity.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a rate subject to change from time to time.

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