Debt (Narrative) (Details) - USD ($) $ in Thousands	6 Months Ended
	Aug. 31, 2023	Aug. 31, 2022	Feb. 28, 2023
Debt Instrument [Line Items]
Outstanding Balance	$ 18,084,422		$ 17,775,137
Capitalized interest	2,900	$ 2,100
Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity	2,000,000
Unused capacity	2,000,000
Term Loan [Member]
Debt Instrument [Line Items]
Outstanding Balance	$ 300,000
Long-Term Debt, Percentage Bearing Variable Interest, Percentage Rate	6.30%
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	6.30%