Annual report pursuant to Section 13 and 15(d)

LONG-TERM DEBT (Amended Senior Secured Credit Facility) (Details)

v3.20.4
LONG-TERM DEBT (Amended Senior Secured Credit Facility) (Details)
12 Months Ended
Dec. 31, 2020
USD ($)
Oct. 31, 2019
USD ($)
Senior Secured Credit Facility Delayed Draw Term Loan A [Member]    
Debt Instrument [Line Items]    
Face amount $ 400,000,000  
Senior Secured Credit Facility Delayed Draw Term Loan A [Member] | Minimum [Member]    
Debt Instrument [Line Items]    
Debt instrument period payment of principal, percentage 0.625%  
Senior Secured Credit Facility Delayed Draw Term Loan A [Member] | Maximum [Member]    
Debt Instrument [Line Items]    
Debt instrument period payment of principal, percentage 1.25%  
Senior Secured Credit Facility Term loan B [Member]    
Debt Instrument [Line Items]    
Face amount $ 950,000,000 $ 950,000,000
Quarterly payments $ 2,400,000  
Senior Secured Credit Facility Term loan B [Member] | Eurodollar [Member]    
Debt Instrument [Line Items]    
Basis spread on variable rate 1.75%  
Senior Secured Credit Facility Term loan B [Member] | Base Rate [Member]    
Debt Instrument [Line Items]    
Basis spread on variable rate 0.75%  
Senior Secured Credit Facility Revolving Credit Facility [Member]    
Debt Instrument [Line Items]    
Maximum borrowing capacity $ 500,000,000  
Senior Secured Credit Facility Incremental Revolving Credit Facility [Member]    
Debt Instrument [Line Items]    
Maximum borrowing capacity $ 130,000,000  
Revolving credit facility, commitment fee on undrawn portion available 1.75%  
Senior Secured Credit Facility Incremental Revolving Credit Facility [Member] | Eurodollar [Member]    
Debt Instrument [Line Items]    
Basis spread on variable rate 2.50%  
Senior Secured Credit Facility Incremental Revolving Credit Facility [Member] | Base Rate [Member]    
Debt Instrument [Line Items]    
Basis spread on variable rate 1.50%  
Senior Secured Credit Facility [Member]    
Debt Instrument [Line Items]    
Secured indebtedness leverage ratio, maximum 3.75  
Percentage of capital stock of foreign wholly owned (first-tier) subsidiaries 65.00%  
Senior Secured Credit Facility [Member] | Minimum [Member]    
Debt Instrument [Line Items]    
Additional borrowing capacity available $ 425,000,000  
Senior Secured Credit Facility [Member] | Maximum [Member]    
Debt Instrument [Line Items]    
Additional borrowing capacity available 855,000,000  
Senior Secured Credit Facility Revolving And Incremental Revolving Credit Facilities Combined [Member]    
Debt Instrument [Line Items]    
Maximum borrowing capacity 630,000,000  
Borrowing outstanding under the revolving credit facilities 0  
Senior Secured Credit Facility Revolving And Incremental Revolving Credit Facilities Combined [Member] | Letter of Credit [Member]    
Debt Instrument [Line Items]    
Maximum borrowing capacity 150,000,000  
Senior Secured Credit Facility Revolving And Incremental Revolving Credit Facilities Combined [Member] | Swingline Loans [Member]    
Debt Instrument [Line Items]    
Maximum borrowing capacity 50,000,000  
Senior Secured Credit Facility Revolving And Incremental Revolving Credit Facilities Combined [Member] | Dollar Euro Or British Pound Line of Credit [Member]    
Debt Instrument [Line Items]    
Maximum borrowing capacity 300,000,000  
Senior Secured Credit Facility Revolving And Incremental Revolving Credit Facilities Combined [Member] | Other Foreign Line of Credit [Member]    
Debt Instrument [Line Items]    
Maximum borrowing capacity $ 100,000,000  
Senior Secured Credit Facility Revolving Credit Facility And Delayed Draw Term Loan A [Member]    
Debt Instrument [Line Items]    
Revolving credit facility, commitment fee on undrawn portion available 0.50%  
Senior Secured Credit Facility Revolving Credit Facility And Delayed Draw Term Loan A [Member] | Eurodollar [Member]    
Debt Instrument [Line Items]    
Basis spread on variable rate 2.25%  
Senior Secured Credit Facility Revolving Credit Facility And Delayed Draw Term Loan A [Member] | Base Rate [Member]    
Debt Instrument [Line Items]    
Basis spread on variable rate 1.25%  
Senior Secured Credit Facility Revolving Credit Facility and Incremental Credit Facility and Delayed Draw Term Loan A [Member]    
Debt Instrument [Line Items]    
Outstanding letters of credit $ 68,300,000  
Current borrowing capacity available $ 961,700,000