Annual report pursuant to Section 13 and 15(d)

Description of Business, Basis of Presentation and Summary of Significant Accounting Policies (Details Textual)

v3.19.1
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