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LONG-TERM DEBT AND LINES OF CREDIT - Narrative (Details)
7 Months Ended 12 Months Ended 14 Months Ended 26 Months Ended 50 Months Ended 59 Months Ended 71 Months Ended
Dec. 31, 2016
USD ($)
Dec. 31, 2017
USD ($)
$ / shares
Rate
May 31, 2016
USD ($)
May 31, 2015
USD ($)
Jun. 30, 2018
USD ($)
Jun. 30, 2019
Jun. 30, 2021
Mar. 31, 2022
USD ($)
Mar. 31, 2023
Sep. 30, 2019
Sep. 30, 2018
Mar. 31, 2018
May 02, 2017
USD ($)
Debt Instrument [Line Items]                          
Face amount of debt instrument $ 187,274,000 $ 108,979,000                      
Other restrictions on payment of dividends (in dollars per share) | $ / shares   $ 0.01                      
Interest expense 108,600,000 $ 174,300,000 $ 67,900,000 $ 39,900,000                  
2016 Credit Facility                          
Debt Instrument [Line Items]                          
Minimum interest coverage ratio   2.25                      
Secured Debt                          
Debt Instrument [Line Items]                          
Face amount of debt instrument                         $ 5,200,000,000.0
Secured Debt | Revolving Credit Facility                          
Debt Instrument [Line Items]                          
Face amount of debt instrument   $ 1,250,000,000.00                      
Secured Debt | Term Loan A                          
Debt Instrument [Line Items]                          
Face amount of debt instrument   $ 1,500,000,000.0                      
Effective interest rate percentage | Rate   3.32%                      
Secured Debt | Term Loan A-2                          
Debt Instrument [Line Items]                          
Face amount of debt instrument   $ 1,300,000,000.0                      
Effective interest rate percentage | Rate   3.24%                      
Secured Debt | Term Loan B-2                          
Debt Instrument [Line Items]                          
Face amount of debt instrument   $ 1,200,000,000.0                      
Secured Debt | Term Loan B                          
Debt Instrument [Line Items]                          
Interest rate percentage at period end | Rate   3.57%                      
Interest Rate Swap                          
Debt Instrument [Line Items]                          
Variable rate debt   $ 1,300,000,000                      
Accumulated other comprehensive income related to interest rate swap   2,400,000                      
Line of Credit                          
Debt Instrument [Line Items]                          
Maximum borrowing capacity   863,600,000.0                      
Available borrowings under credit facility   689,400,000                      
Repayments of lines of credit 51,000,000 59,300,000                      
Amount outstanding under lines of credit, current $ 392,100,000 $ 635,200,000                      
Weighted-average interest rate of short-term debt 1.90% 1.97%                      
Average outstanding amount under credit facility   $ 334,000,000                      
Forecast | 2016 Credit Facility                          
Debt Instrument [Line Items]                          
Maximum covenant leverage ratio                   4.00 4.25 4.5  
Forecast | Secured Debt | Term Loan A-2                          
Debt Instrument [Line Items]                          
Periodic payment of debt         $ 1,700,000                
Forecast | Secured Debt | Term A-2 Loan Due October 2021                          
Debt Instrument [Line Items]                          
Periodic payment of debt               $ 8,600,000          
Revolving Credit Facility | Secured Debt                          
Debt Instrument [Line Items]                          
Interest rate percentage at period end | Rate   3.24%                      
Revolving Credit Facility | Forecast | Term Loan A                          
Debt Instrument [Line Items]                          
Percentage of quarterly installment payments           1.25% 1.875% 2.50%          
Revolving Credit Facility | Forecast | Term Loan B-2                          
Debt Instrument [Line Items]                          
Percentage of quarterly installment payments                 0.25%        
Letter of Credit | Line of Credit                          
Debt Instrument [Line Items]                          
Maximum borrowing capacity   $ 100,000,000                      
Standby Letters of Credit | Line of Credit                          
Debt Instrument [Line Items]                          
Available borrowings under credit facility   $ 473,300,000                      
Minimum | Revolving Credit Facility | Fourth Amendment [Member]                          
Debt Instrument [Line Items]                          
Commitment fee percentage   0.20%                      
Maximum | Revolving Credit Facility | Fourth Amendment [Member]                          
Debt Instrument [Line Items]                          
Commitment fee percentage   0.30%