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Debt (Detail)
6 Months Ended
Jun. 30, 2020
USD ($)
Debt Disclosure [Abstract]  
Line of credit facility, maximum borrowing capacity $ 1,000,000,000.0
Loan agreement term (in years) 3 years
Maturity date of loan agreement Mar. 16, 2023
Debt instrument covenant, ratio 65.00%
Long-term line of credit $ 1,000,000,000.0
London Interbank Offered Rate (LIBOR)  
Debt Instrument [Line Items]  
Interest rate, applicable margin 2.25%
Annual increase in applicable margin on interest rate 0.25%