Pension and Postretirement Benefit Obligations - Additional Information (Detail) - Pension Plans	3 Months Ended
	Mar. 29, 2020 USD ($) benefit_plan
Defined Benefit Plan Disclosure [Line Items]
Company contribution to pension plans during the period	$ 0
Number of company-sponsored pension plans | benefit_plan	2
Minimum
Defined Benefit Plan Disclosure [Line Items]
Benefit pension plan, contributions	$ 7,000,000
Maximum
Defined Benefit Plan Disclosure [Line Items]
Benefit pension plan, contributions	$ 12,000,000