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Condensed Consolidated Cash Flows (Parenthetical)
Dec. 31, 2019
Dec. 02, 2019
2013 Senior Notes    
Debt instrument, stated interest rate 5.375%  
2013 Senior Notes | Senior Notes    
Debt instrument, stated interest rate 5.375%  
2019 Senior Notes    
Debt instrument, stated interest rate   5.125%
2019 Senior Notes | Senior Notes    
Debt instrument, stated interest rate 5.125%