Description of Business, Basis of Presentation and Summary of Significant Accounting Policies (Details Textual)	3 Months Ended	12 Months Ended
	Feb. 28, 2019 USD ($) stock_based_compensation_plan class_of_stock	Feb. 28, 2019 USD ($) stock_based_compensation_plan class_of_stock	Feb. 28, 2018 USD ($)	Feb. 28, 2017 USD ($)	Mar. 01, 2019 USD ($)	Mar. 01, 2018 USD ($)	Mar. 01, 2016 USD ($)
Class of Stock [Line Items]
Number of classes of common stock with a material number of shares outstanding | class_of_stock	2	2
Statement of Cash Flows [Abstract]
Cash flows from operating activities		$ 2,246,300,000	$ 1,931,400,000	$ 1,696,000,000
Cash flows from investing activities		(4,831,800,000)	(1,423,100,000)	(1,461,800,000)
Cash flows from financing activities		2,593,300,000	(601,200,000)	(134,800,000)
Deferred tax assets adjustment	$ 1,911,600,000	1,911,600,000	234,500,000
Income tax benefit from reversal of valuation allowance	$ (50,100,000)
Advertising expense		$ 700,800,000	615,700,000	552,800,000
Number of stock-based employee compensation plans | stock_based_compensation_plan	2	2
Class A Common Stock [Member]
Class of Stock [Line Items]
Common stock, dividend rights		10.00%
Accounting Standards Update 2014-09, Revenue recognition [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Opening retained earnings adjustment							$ (49,000,000)
Accounting Standards Update 2014-09, Revenue recognition [Member] | Restatement Adjustment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Opening retained earnings adjustment							$ (49,000,000)
Statement of Cash Flows [Abstract]
Cash flows from operating activities			0	0
Cash flows from investing activities			0	0
Cash flows from financing activities			$ 0	$ 0
Accounting Standards Update 2016-16, Income taxes [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Opening retained earnings adjustment						$ 2,242,000,000
Statement of Cash Flows [Abstract]
Deferred tax assets adjustment						$ 2,200,000,000
Accounting Standards Update 2016-02, Leases [Member] | Minimum [Member] | Subsequent Event [Member]
Statement of Cash Flows [Abstract]
Estimated right-of-use assets, operating leases					$ 600,000,000
Estimated lease liabilities, operating leases					600,000,000
Accounting Standards Update 2016-02, Leases [Member] | Maximum [Member] | Subsequent Event [Member]
Statement of Cash Flows [Abstract]
Estimated right-of-use assets, operating leases					650,000,000
Estimated lease liabilities, operating leases					$ 650,000,000