Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Jan. 01, 2017	Dec. 31, 2014
Income Tax [Line Items]
U.S. federal statutory income tax rate		35.00%	35.00%	35.00%
Tax Cuts and Jobs Act of 2017, Change in Tax Rate, Deferred Tax Asset		$ 420,000
Deferred tax expenses on repatriation of foreign earnings		1,000
Income tax provisions		565,599	$ 123,769	$ (1,009,552)
Deferred tax assets, valuation allowance		61,456	$ 69,593	89,251		$ 1,044,152
Deferred tax benefit from release of valuation allowance				878,000
Deferred tax benefit related to tax receivable agreement				378,000
Deferred tax assets recorded due to net operating losses and tax credit carryforwards		239,959
Indefinite-lived carryforwards		26,000
Other certain tax credit carryforwards		$ 188,000
Certain carryforwards begin to expire		2029
Income tax examination, description		With few exceptions, the Company is no longer subject to income tax examination by foreign tax authorities and by U.S. federal, state and local tax authorities for years prior to 2012. While we are under examination in various tax jurisdictions with respect to certain open years, the Company does not expect that the result of any final determination related to these examinations will have a material impact on its financial statements. Developments with respect to such examinations are monitored on an ongoing basis and adjustments to tax liabilities are made as appropriate.
Unrecognized tax benefits, including interest and penalties recorded that may be recognized within 12 months		$ 20,000
LTBP Trust [Member]
Income Tax [Line Items]
Reduction of deferred tax benefit related to tax receivable agreement				$ 161,000
Adjustments for New Accounting Principle [Member]
Income Tax [Line Items]
Income tax provisions		$ 9,000
Deferred tax assets recorded for previously unrecognized excess tax benefits on share-based payment awards					$ 81,544
Deferred tax assets, valuation allowance					$ 12,090
Scenario Forecast [Member]
Income Tax [Line Items]
U.S. federal statutory income tax rate	21.00%