Leases - Schedule of Supplemental Information Related to Operating Leases (Detail) - USD ($) $ in Thousands		Dec. 31, 2020	Dec. 31, 2019
Assets
Operating lease ROU assets	[1]	$ 165,969	$ 169,065
Operating lease, right-of-use asset [extensible list]		us-gaap:OtherAssets	us-gaap:OtherAssets
Liabilities
Operating lease liabilities	[1]	$ 190,207	$ 187,398
Operating lease, liability [extensible list]		us-gaap:AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	us-gaap:AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent

[1] As of December 31, 2020, $166.0 million and $190.2 million, relating to lease ROU assets and lease liabilities, respectively, is attributable to the adoption of ASU No. 2016-02, Leases (Topic 842). As of December 31, 2019, $169.1 million and $187.4 million, relating to lease ROU assets and lease liabilities, respectively, is attributable to the adoption of ASU No. 2016-02, Leases (Topic 842). See Note 27—“Leases”, in addition to the information under the heading “Recently Adopted Accounting Pronouncements” included in Note 1—“Organization and Basis of Presentation” for additional information.