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DEBT - Narrative (Details)
3 Months Ended
Sep. 09, 2019
USD ($)
extension_option
Mar. 31, 2020
USD ($)
Mar. 31, 2019
USD ($)
Dec. 31, 2019
USD ($)
Oct. 07, 2019
Sep. 09, 2019
CAD ($)
extension_option
May 29, 2019
Aug. 10, 2016
USD ($)
Jun. 10, 2015
CAD ($)
Debt Instrument [Line Items]                  
Term loans, net   $ 1,033,110,000   $ 1,040,258,000          
Amount outstanding under credit facility   101,000,000   0          
Interest expense   25,704,000 $ 36,318,000            
Non-cash interest expense   2,233,000 $ 2,561,000            
Accrued interest   18,600,000   16,700,000          
Fifth Amended and Restated Credit Agreement | Line of Credit                  
Debt Instrument [Line Items]                  
Borrowing capacity $ 2,750,000,000                
Fifth Amended and Restated Credit Agreement | Revolving Credit Facility                  
Debt Instrument [Line Items]                  
Borrowing capacity 1,000,000,000.0                
Borrowing capacity in certain foreign currencies (up to) $ 175,000,000.0                
Number of extension options | extension_option 2         2      
Extension period 6 months                
Amount outstanding under credit facility   101,000,000.0              
Available borrowing capacity   $ 899,000,000.0              
Interest rate   2.09%              
Fifth Amended and Restated Credit Agreement | Revolving Credit Facility | Minimum                  
Debt Instrument [Line Items]                  
Annum percent unused borrowing fee 0.125%                
Fifth Amended and Restated Credit Agreement | Revolving Credit Facility | Maximum                  
Debt Instrument [Line Items]                  
Annum percent unused borrowing fee 0.30%                
Fifth Amended and Restated Credit Agreement | Revolving Credit Facility | Prime Rate                  
Debt Instrument [Line Items]                  
Basis spread on variable rate 0.50%                
Fifth Amended and Restated Credit Agreement | Revolving Credit Facility | Base Rate                  
Debt Instrument [Line Items]                  
Basis spread on variable rate 1.00%                
Fifth Amended and Restated Credit Agreement | Revolving Credit Facility | Base Rate | Minimum                  
Debt Instrument [Line Items]                  
Basis spread on variable rate 0.00%                
Fifth Amended and Restated Credit Agreement | Revolving Credit Facility | Base Rate | Maximum                  
Debt Instrument [Line Items]                  
Basis spread on variable rate 0.45%                
Fifth Amended and Restated Credit Agreement | Revolving Credit Facility | LIBOR | Minimum                  
Debt Instrument [Line Items]                  
Basis spread on variable rate 0.775%                
Fifth Amended and Restated Credit Agreement | Revolving Credit Facility | LIBOR | Maximum                  
Debt Instrument [Line Items]                  
Basis spread on variable rate 1.45%                
Senior Notes                  
Debt Instrument [Line Items]                  
Aggregate principal amount   $ 1,250,000,000   $ 1,250,000,000          
Senior Notes | 4.80% senior unsecured notes due 2024 (“2024 Notes”)                  
Debt Instrument [Line Items]                  
Interest rate   4.80%         4.80%    
Senior Notes | 3.90% senior unsecured notes due 2029 (“2029 Notes”)                  
Debt Instrument [Line Items]                  
Interest rate   3.90%     3.90%        
Senior Notes | 5.125% senior unsecured notes due 2026 (“2026 Notes”)                  
Debt Instrument [Line Items]                  
Interest rate   5.125%              
Senior Notes | 5.88% senior unsecured notes due 2027 (“2027 Notes”)                  
Debt Instrument [Line Items]                  
Interest rate   5.88%              
U.S. Dollar Term Loan | Fifth Amended and Restated Credit Agreement                  
Debt Instrument [Line Items]                  
Aggregate principal amount $ 1,100,000,000             $ 845,000,000.0  
Term loans, net   $ 955,000,000.0              
U.S. Dollar Term Loan | Fifth Amended and Restated Credit Agreement | Interest Rate Swap                  
Debt Instrument [Line Items]                  
Fixed interest rate under swap               1.19%  
U.S. Dollar Term Loan | Fifth Amended and Restated Credit Agreement | Base Rate | Minimum                  
Debt Instrument [Line Items]                  
Basis spread on variable rate 0.00%                
U.S. Dollar Term Loan | Fifth Amended and Restated Credit Agreement | Base Rate | Maximum                  
Debt Instrument [Line Items]                  
Basis spread on variable rate 0.65%                
U.S. Dollar Term Loan | Fifth Amended and Restated Credit Agreement | LIBOR | Minimum                  
Debt Instrument [Line Items]                  
Basis spread on variable rate 0.85%                
U.S. Dollar Term Loan | Fifth Amended and Restated Credit Agreement | LIBOR | Maximum                  
Debt Instrument [Line Items]                  
Basis spread on variable rate 1.65%                
U.S. Dollar Term Loan | Fifth Amended and Restated Credit Agreement | Redemption Period One                  
Debt Instrument [Line Items]                  
Aggregate principal amount $ 105,000,000.0                
U.S. Dollar Term Loan | Fifth Amended and Restated Credit Agreement | Redemption Period Two                  
Debt Instrument [Line Items]                  
Aggregate principal amount $ 350,000,000.0                
Canadian Dollar Term Loan | Fifth Amended and Restated Credit Agreement                  
Debt Instrument [Line Items]                  
Aggregate principal amount           $ 125,000,000.0     $ 125,000,000.0
Canadian Dollar Term Loan | Fifth Amended and Restated Credit Agreement | Interest Rate Swap                  
Debt Instrument [Line Items]                  
Fixed interest rate under swap                 1.41%
Canadian Dollar Term Loan | Fifth Amended and Restated Credit Agreement | CDOR | Minimum                  
Debt Instrument [Line Items]                  
Basis spread on variable rate 0.85%                
Canadian Dollar Term Loan | Fifth Amended and Restated Credit Agreement | CDOR | Maximum                  
Debt Instrument [Line Items]                  
Basis spread on variable rate 1.65%