Retirement Plans - Additional Information (Detail) - USD ($)			3 Months Ended		12 Months Ended
	Dec. 30, 2015	Sep. 30, 2015	Jul. 02, 2016	Sep. 26, 2015	Dec. 31, 2016	Jan. 02, 2016	Dec. 27, 2014
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Settlement charge included in net periodic pension costs					$ 4,000,000	$ 3,000,000	$ 2,000,000
Curtailment gain loss		$ 0
Reduction in benefit obligation		91,000,000
Curtailment		$ 73,000,000
Increase in pension obligation			$ 22,000,000
Defined benefit actuarial gain (loss)					(74,000,000)	73,000,000
Company's anticipated contributions					36,000,000
Company's contributions to plan					32,636,000	33,630,000	32,044,000
Withdrawal liabilities related to multiemployer plan					$ 120,000,000
Related Facilities Union Contracts [Member] | Central States Teamsters Union Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Company's contributions to plan	$ 97,000,000
Zone Red [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Criteria established under the Internal Revenue Code, funded status percentage					Less than 65 percent
Zone Yellow [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Criteria established under the Internal Revenue Code, funded status percentage					Between 65 and less than 80 percent
Zone Green [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Criteria established under the Internal Revenue Code, funded status percentage					At least 80 percent
Equity Securities [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Define benefit target plan assets allocations					50.00%
Define benefit actual plan assets allocations					50.00%
Debt Securities [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Define benefit target plan assets allocations					50.00%
Define benefit actual plan assets allocations					50.00%
Maximum [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Change in health care cost					$ 1,000,000
Minimum [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Minimum Contribution by the employer to multi-employer plans as percentage of total contribution					5.00%
Minimum [Member] | Related Facilities Union Contracts [Member] | Central States Teamsters Union Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Future minimum percentage of annual contribution under related facilities	90.00%
Other Postretirement Plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Curtailment gain loss							2,096,000
Curtailment							3,612,000
Defined benefit actuarial gain (loss)					$ (174,000)	1,035,000	$ (986,000)
Defined Contribution Plan 401K [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Future minimum percentage of annual contribution under related facilities				6.00%			6.00%
Matching contributions				50.00%			50.00%
Company's contributions to plan					44,000,000	32,000,000	$ 26,000,000
Discretionary contributions					$ 0	$ 0	$ 0
Defined Contribution Plan 401K [Member] | First 3% of Participants Compensation [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Matching contributions					100.00%
Future minimum percentage of annual contribution under related facilities					3.00%
Defined Contribution Plan 401K [Member] | Next 2% of Participants Compensation [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Matching contributions					50.00%
Future minimum percentage of annual contribution under related facilities					2.00%
Defined Contribution Plan 401K [Member] | Maximum [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Matching contributions					4.00%