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Debt and Financing Lease Obligations - Senior Notes (Details) - USD ($)
Nov. 30, 2020
Oct. 31, 2020
Jul. 01, 2014
Debt Instrument [Line Items]      
Original principal amount   $ 1,466,150,000  
Maximum [Member] | Subsequent Event [Member]      
Debt Instrument [Line Items]      
Debt Instrument, Repurchased Face Amount $ 100,000,000.0    
Senior Notes [Member] | Senior Unsecured Notes Due July 2022 [Member]      
Debt Instrument [Line Items]      
Original principal amount     $ 250,000,000.0
Interest rate on notes (in hundredths)     7.25%
Effective interest rate     7.80%
Restrictions on payment of dividends, amount free from restriction   $ 176,000,000.0  
Trigger amount under indenture     $ 25,000,000.0