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DEBT - Other Narrative (Details) - Other - USD ($)
shares in Millions
Apr. 12, 2017
Jan. 31, 2020
Dec. 20, 2018
4.03% Margin Loan Facility due April 2022      
Debt Instrument [Line Items]      
Maximum borrowing capacity $ 2,000,000,000.0   $ 3,350,000,000
4.03% Margin Loan Facility due April 2022 | Base Rate      
Debt Instrument [Line Items]      
Basis spread on variable rate 1.25%    
4.03% Margin Loan Facility due April 2022 | LIBOR      
Debt Instrument [Line Items]      
Basis spread on variable rate 2.25%    
Term Loan A-6 Facility      
Debt Instrument [Line Items]      
Maximum borrowing capacity   $ 4,000,000,000.0  
Class B | 4.03% Margin Loan Facility due April 2022      
Debt Instrument [Line Items]      
Debt instrument, collateral (in shares) 76    
Class A | 4.03% Margin Loan Facility due April 2022      
Debt Instrument [Line Items]      
Debt instrument, collateral (in shares) 24