XML 486 R56.htm IDEA: XBRL DOCUMENT v3.8.0.1
Debt (Narrative) (Details) - USD ($)
1 Months Ended 3 Months Ended
Sep. 30, 2017
Sep. 30, 2017
May 31, 2017
Jan. 31, 2017
Dec. 31, 2016
Debt Instrument [Line Items]          
Principal amount $ 4,216,427,000 $ 4,216,427,000     $ 3,380,827,000
Notes due | Fixed Rate Notes          
Debt Instrument [Line Items]          
Loan amount 700,000,000 700,000,000      
Notes due | New Term Loan          
Debt Instrument [Line Items]          
Loan amount 350,000,000 350,000,000      
Notes due | Notes due September 2020          
Debt Instrument [Line Items]          
Loan amount 200,000,000 200,000,000      
Principal amount $ 300,000,000 $ 300,000,000     0
Interest rate 3.625% 3.625%      
Effective interest rate percentage   3.10%      
Notes due | Notes due September 2020 | Eurodollar          
Debt Instrument [Line Items]          
Basis spread on variable rate 1.50%        
Notes due | Notes due April 2023          
Debt Instrument [Line Items]          
Principal amount $ 400,000,000 $ 400,000,000     0
Interest rate 4.70% 4.70%      
Notes due | Notes due August 2018          
Debt Instrument [Line Items]          
Loan amount $ 150,000,000 $ 150,000,000      
Extension period 1 year        
Effective interest rate percentage   2.40%      
Notes due | Notes due August 2018 | Eurodollar          
Debt Instrument [Line Items]          
Basis spread on variable rate 1.125%        
Notes due | Notes due May 2022          
Debt Instrument [Line Items]          
Loan amount     $ 400,000,000    
Principal amount $ 400,000,000 $ 400,000,000     0
Interest rate 3.875% 3.875% 3.875%    
Notes due | Notes Due in June 2017          
Debt Instrument [Line Items]          
Loan amount $ 150,000,000 $ 150,000,000      
Notes due | Notes due September 2017          
Debt Instrument [Line Items]          
Principal amount 0 0     $ 385,109,000
Interest rate         5.75%
Notes due | Notes due May 2018          
Debt Instrument [Line Items]          
Principal amount $ 350,000,000 $ 350,000,000     $ 350,000,000
Interest rate 4.75% 4.75%      
Notes due | Notes due January 2037          
Debt Instrument [Line Items]          
Principal amount $ 35,841,000 $ 35,841,000     $ 115,041,000
Interest rate 5.25% 5.25%   5.25%  
Redemption amount       $ 79,000,000