Debt (Schedule Of Debt) (Details) - USD ($) $ in Thousands	Nov. 30, 2016	Feb. 29, 2016
Debt Instrument [Line Items]
Total debt	$ 11,484,527	$ 10,320,658
Unamortized Debt Issuance Expense	23,227	21,665
Long-term Debt and Capital Lease Obligations, Current	(324,304)	(315,509)
Long-term Debt and Capital Lease Obligations	11,832,058	10,657,832
Non-Recourse Debt	10,462,947	9,527,750
Finance and Capital Lease Obligations	477,531	414,654
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Long-term Debt	91,580	415,428
Term Loan [Member]
Debt Instrument [Line Items]
Long-term Debt	300,000	300,000
3.86% senior notes dues 2023 [Member]
Debt Instrument [Line Items]
Long-term Debt	100,000	0
4.17% senior notes due 2026 [Member]
Debt Instrument [Line Items]
Long-term Debt	200,000	0
4.27% senior notes due 2028 [Member]
Debt Instrument [Line Items]
Long-term Debt	$ 200,000	$ 0

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

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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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Amount of debt for which creditor does not have general recourse to the debtor but rather has recourse only to the property used for collateral in the transaction or other specific property.

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The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

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