Summary of Significant Accounting Policies - Additional Information (Detail) $ in Millions		1 Months Ended	6 Months Ended
	Jan. 01, 2017 USD ($)	Mar. 31, 2017 USD ($)	Jul. 01, 2017 USD ($) Segment	Dec. 31, 2016 USD ($)	Jun. 25, 2016 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Number of reportable segments | Segment			2
Accounts payable and accrued expenses and other current liabilities not yet presented for payment			$ 44	$ 58
Cash and cash equivalents			763	$ 763	$ 1,014
Cash and cash equivalents, discontinued operations			57		$ 104
Reduction in operating income due to early adoption		$ (13)
Cumulative effect on accumulated deficit, net of tax	$ 1
Non-US
Summary Of Significant Accounting Policies [Line Items]
Cash and cash equivalents			134
Cash and cash equivalents, discontinued operations			$ 57