Goodwill and Other Intangibles - Additional Information (Detail)	3 Months Ended	9 Months Ended
	Sep. 29, 2018 USD ($)	Sep. 29, 2018 USD ($) reporting_unit	Sep. 30, 2017 USD ($)
Other Intangible Assets [Line Items]
Amortization expense	$ 10,000,000	$ 30,000,000	$ 85,000,000
Goodwill, impairment	0
Number of business segments | reporting_unit		1
Indefinite-lived intangible assets, impairment	$ 0
Customer Relationship | Minimum
Other Intangible Assets [Line Items]
Estimated useful lives of intangible assets		2 years
Customer Relationship | Maximum
Other Intangible Assets [Line Items]
Estimated useful lives of intangible assets		4 years
Noncompete Agreements | Minimum
Other Intangible Assets [Line Items]
Estimated useful lives of intangible assets		2 years
Noncompete Agreements | Maximum
Other Intangible Assets [Line Items]
Estimated useful lives of intangible assets		4 years