Leases - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019	Jan. 01, 2019
Lessee Lease Description [Line Items]
Operating lease right-of-use assets	$ 196,737,000		$ 205,112,000
Operating lease, liability	212,493,000
Finance lease	0
General and Administrative [Member]
Lessee Lease Description [Line Items]
Lease costs, net	$ 16,000,000.0	$ 15,900,000
Accounting Standards Update 2016-02 [Member]
Lessee Lease Description [Line Items]
ASU adoption status	true
ASU adoption date	Jan. 01, 2019
ASU adoption approach	Modified Retrospective
Operating lease right-of-use assets				$ 225,300,000
Operating lease, liability				239,300,000
Cumulative effect of accounting change		110,000
Derecognition of straight line lease liabilities net				14,100,000
Accounting Standards Update 2016-02 [Member] | Retained Earnings [Member]
Lessee Lease Description [Line Items]
Cumulative effect of accounting change		$ 110,000		$ 100,000