Fair Value Disclosures - Assets And Liabilities Measured At Fair Value On Recurring Basis (Details) - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Assets:
Assets measured at fair value on a recurring basis	$ 65,700,000	$ 77,254,000
Liabilities:
Liabilities measured at fair value on a recurring basis	983,250,000	981,270,000
Fair Value, Inputs, Level 1
Assets:
Assets measured at fair value on a recurring basis	5,612,000	2,277,000
Fair Value, Inputs, Level 2
Assets:
Assets measured at fair value on a recurring basis	60,088,000	74,977,000
Liabilities:
Liabilities measured at fair value on a recurring basis	983,250,000	981,270,000
Fair Value, Inputs, Level 2 | Foreign currency forward contracts
Assets:
Assets measured at fair value on a recurring basis	140,000	1,558,000
Liabilities:
Liabilities measured at fair value on a recurring basis	699,000	1,499,000
Fair Value, Inputs, Level 2 | Interest rate swap contracts
Liabilities:
Liabilities measured at fair value on a recurring basis	126,317,000	64,831,000
Fair Value, Inputs, Level 2 | Deferred compensation plan assets
Assets:
Assets measured at fair value on a recurring basis	59,948,000	73,419,000
Fair Value, Inputs, Level 2 | Deferred compensation plan liabilities
Liabilities:
Liabilities measured at fair value on a recurring basis	67,802,000	79,556,000
Senior Notes
Liabilities:
Aggregate principal amount	800,000,000.0
Long-term debt carrying amount	785,600,000	785,000,000.0
Senior Notes | Fair Value, Inputs, Level 2 | Debt
Liabilities:
Liabilities measured at fair value on a recurring basis	$ 788,432,000	$ 835,384,000