XML 44 R50.htm IDEA: XBRL DOCUMENT v3.20.1
Debt, Derivatives and Hedging Activities - Narrative (Details) - USD ($)
3 Months Ended 9 Months Ended
Feb. 29, 2020
Feb. 28, 2019
Feb. 29, 2020
Feb. 28, 2019
May 31, 2019
May 24, 2019
May 23, 2019
Debt Instrument [Line Items]              
Debt, carrying value $ 2,750,000,000.0   $ 2,750,000,000.0   $ 2,866,200,000    
Debt, fair value 3,028,500,000   3,028,500,000   2,998,700,000    
(Payments) issuance of commercial paper, net     (112,500,000) $ 217,500,000      
Debt due within one year 199,800,000   199,800,000   312,264,000    
Amortization of interest rate lock agreements - increase (decrease) to other comprehensive income (400,000) $ (300,000) (1,000,000.0) $ (900,000)      
Treasury Lock              
Debt Instrument [Line Items]              
Notional amount 700,000,000.0   700,000,000.0   500,000,000.0    
Interest rate lock asset 27,100,000   27,100,000        
Interest rate lock liability $ 89,800,000   $ 89,800,000   36,400,000    
Term loan due 2020              
Debt Instrument [Line Items]              
Variable borrowing rate 2.25%   2.25%        
Revolving credit facility              
Debt Instrument [Line Items]              
Revolving credit facility, maximum borrowing capacity with accordion feature           $ 1,000,000,000.0 $ 600,000,000.0
Revolving credit facility amount outstanding $ 0   $ 0   0    
Revolving credit facility | Term loan due 2020              
Debt Instrument [Line Items]              
Revolving credit facility, maximum borrowing capacity with accordion feature           200,000,000.0  
Annual extension term     12 months        
Extension term     4 years        
Credit agreement              
Debt Instrument [Line Items]              
Debt amendment, increase limit (up to)           $ 250,000,000.0  
Commercial paper              
Debt Instrument [Line Items]              
(Payments) issuance of commercial paper, net     $ (112,500,000)        
Debt due within one year         $ 112,500,000    
Variable borrowing rate         2.68%