Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Jun. 30, 2019	Jun. 30, 2018	Jan. 01, 2019
Income Taxes [Line Items]
Effective income tax rate	22.40%	23.50%	21.20%	23.20%
Increase (decrease) in provision for income tax related to change in enacted tax law	$ (4,000,000)
Increase (decrease) in provision for income taxes			$ (9,000,000)
Provision for income taxes			$ 10,000,000	$ 2,000,000
Unrecognized tax benefits					$ 2,000,000
Impact of unrecognized tax benefits if recognized					$ 1,000,000
Period of expiration of the statute of limitations for certain jurisdictions			within the next twelve months
Jurisdictions statutes of limitations expiration period			12 months
Maximum
Income Taxes [Line Items]
Provisional deferred tax - GILTI			$ 1,000,000	$ 1,000,000
Accrued interest and penalties			$ 1,000,000
Foreign and U.S. state and local jurisdictions have statutes of limitations, in years			4 years
Minimum
Income Taxes [Line Items]
Foreign and U.S. state and local jurisdictions have statutes of limitations, in years			3 years