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Borrowings - Additional Information (Details) - USD ($)
1 Months Ended 3 Months Ended 6 Months Ended
Aug. 14, 2014
Jun. 30, 2016
Aug. 31, 2013
Sep. 30, 2011
May 31, 2007
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Jun. 30, 2009
Debt Instrument [Line Items]                    
Outstanding amount of line of credit   $ 0       $ 0   $ 0    
Unused available capacity           560,000,000   560,000,000    
Fair value, senior notes           1,216,200,000   1,216,200,000    
Long-Term Debt Excluding Current Portion                    
Debt Instrument [Line Items]                    
Fair value, senior notes           1,089,300,000   1,089,300,000    
Current Portion of Long-Term Debt                    
Debt Instrument [Line Items]                    
Fair value, senior notes           126,900,000   126,900,000    
Revolving Credit Facility                    
Debt Instrument [Line Items]                    
Debt issuance costs remaining to be amortized, revolving credit facilities           1,300,000   1,300,000    
Fiscal 2015 Revolving Credit Facility | Long-Term Debt Excluding Current Portion                    
Debt Instrument [Line Items]                    
Unused available capacity           560,000,000   560,000,000    
Fiscal 2015 Revolving Credit Facility | Revolving Credit Facility                    
Debt Instrument [Line Items]                    
Revolving credit facility maximum borrowing capacity $ 750,000,000.0                  
Term 5 years                  
Outstanding amount of line of credit           $ 190,000,000   $ 190,000,000    
Weighted-average interest rate during period           1.52% 1.19% 1.51% 1.18%  
Tranche borrowing period 360 days                  
Annual facility fee rate, fiscal 2015 revolving credit facility (as basis points) 1250.00%                  
Annual facility fee amount, line of credit facility           $ 200,000 $ 500,000 $ 200,000 $ 500,000  
Debt issuance costs, fiscal 2015 revolving credit facility, total incurred $ 1,900,000                  
Fiscal 2015 Revolving Credit Facility | Revolving Credit Facility | Long-Term Debt Excluding Current Portion                    
Debt Instrument [Line Items]                    
Unused available capacity           560,000,000   560,000,000    
Fair value, senior notes           190,000,000   190,000,000    
Fiscal 2012 Revolving Credit Facility | Revolving Credit Facility                    
Debt Instrument [Line Items]                    
Revolving credit facility maximum borrowing capacity       $ 500,000,000.0            
Term       5 years            
Debt issuance costs remaining to be amortized, revolving credit facilities           300,000   300,000    
Fiscal 2015 Revolving Credit Facility U.S. Dollar Tranche | Revolving Credit Facility                    
Debt Instrument [Line Items]                    
Revolving credit facility maximum borrowing capacity 670,000,000.0                  
Fiscal 2015 Revolving Credit Facility Multicurrency Tranche | Revolving Credit Facility                    
Debt Instrument [Line Items]                    
Revolving credit facility maximum borrowing capacity $ 80,000,000.0                  
Fiscal 2007 Senior Notes | Senior Notes                    
Debt Instrument [Line Items]                    
Principal amount, senior notes         $ 250,000,000.0         $ 125,000,000.0
Interest rate, senior notes         6.125%          
Debt Instrument, Issuance, Percentage of Principal Amount         99.10%          
Effective interest rate, senior notes         6.251%          
Debt issuance costs incurred, senior notes         $ 1,900,000          
Debt issuance cost, amortization period, senior notes         10 years          
Debt issuance costs remaining to be amortized, senior notes (less than $0.1 million)   100,000       100,000   100,000    
Unamortized bond discount                   $ 1,000,000
Fiscal 2007 Senior Notes | Senior Notes | Level 1                    
Debt Instrument [Line Items]                    
Fair value, senior notes   129,100,000       126,900,000   126,900,000    
Fiscal 2014 Senior Notes | Senior Notes                    
Debt Instrument [Line Items]                    
Principal amount, senior notes     $ 400,000,000.0              
Interest rate, senior notes     3.95%              
Debt Instrument, Issuance, Percentage of Principal Amount     99.871%              
Effective interest rate, senior notes     3.971%              
Debt issuance costs incurred, senior notes     $ 4,300,000              
Debt issuance cost, amortization period, senior notes     7 years              
Debt issuance costs remaining to be amortized, senior notes (less than $0.1 million)   2,500,000       2,200,000   2,200,000    
Fiscal 2014 Senior Notes | Senior Notes | Level 1                    
Debt Instrument [Line Items]                    
Fair value, senior notes   427,600,000       417,500,000   417,500,000    
Fiscal 2016 Senior Notes | Senior Notes                    
Debt Instrument [Line Items]                    
Principal amount, senior notes   $ 500,000,000.0                
Interest rate, senior notes   3.40%                
Debt Instrument, Issuance, Percentage of Principal Amount   99.589%                
Effective interest rate, senior notes   3.449%                
Debt issuance costs incurred, senior notes   $ 4,500,000                
Debt issuance cost, amortization period, senior notes   10 years                
Debt issuance costs remaining to be amortized, senior notes (less than $0.1 million)   $ 4,500,000       4,200,000   4,200,000    
Fiscal 2016 Senior Notes | Senior Notes | Level 1                    
Debt Instrument [Line Items]                    
Fair value, senior notes   $ 507,900,000       $ 481,800,000   $ 481,800,000    
Revolving Credit Facility | London Interbank Offered Rate (LIBOR) | Fiscal 2015 Revolving Credit Facility                    
Debt Instrument [Line Items]                    
Basis spread on variable interest rate, fiscal 2015 revolving credit facility (as basis points) 10000.00%