Employee Benefit Plans - Summary of Weighted-Average Assumptions Used to Determine Net Benefit Obligation (Detail) - Defined Benefit Pension Plans	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Discount rate	3.90%	3.40%	3.70%
Long-term rate of return on plan assets	4.70%	7.20%	6.90%