Goodwill and Other Intangibles - Additional Information (Details)		12 Months Ended
	Jul. 01, 2018 USD ($)	Dec. 29, 2018 USD ($) reporting_unit	Dec. 30, 2017 USD ($)	Dec. 31, 2016 USD ($)
Finite-Lived Intangible Assets [Line Items]
Amortization expense		$ 40,000,000	$ 95,000,000	$ 155,000,000
Goodwill, impairment	$ 0
Indefinite-lived intangible assets, impairment	$ 0
Number of reporting units | reporting_unit		1
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Weighted-average remaining useful lives of intangible assets		2 years
Future amortization expense, 2019		$ 39,000,000
Future amortization expense, 2020		24,000,000
Future amortization expense, 2021		$ 6,000,000
Customer Relationships | Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets		2 years
Customer Relationships | Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets		4 years
Noncompete Agreements | Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets		2 years
Noncompete Agreements | Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives of intangible assets		4 years