Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
Jan. 03, 2015	Dec. 28, 2013	Dec. 29, 2012
Cash flows provided by (disbursed for) operating activities:
Net income	$ 175,739us-gaap_NetIncomeLoss	$ 230,894us-gaap_NetIncomeLoss	$ 136,121us-gaap_NetIncomeLoss
Adjustments to reconcile net income to net cash provided by operating activities:
Gain on acquisition		(50,071)
Depreciation and amortization	128,961	118,491	102,690
Impairment of assets	10,308
Stock-based compensation	18,662us-gaap_ShareBasedCompensation	15,943us-gaap_ShareBasedCompensation	10,116us-gaap_ShareBasedCompensation
Loss (gain) reclassified from accumulated other comprehensive income to net income	5,218	27,055	17,272
Deferred income taxes	9,241us-gaap_DeferredIncomeTaxExpenseBenefit	6,485us-gaap_DeferredIncomeTaxExpenseBenefit	11,450us-gaap_DeferredIncomeTaxExpenseBenefit
Provision for inventory obsolescence	1,074us-gaap_InventoryWriteDown	1,210us-gaap_InventoryWriteDown	947us-gaap_InventoryWriteDown
Allowances for accounts receivable	4,956us-gaap_ProvisionForDoubtfulAccounts	4,110us-gaap_ProvisionForDoubtfulAccounts	1,991us-gaap_ProvisionForDoubtfulAccounts
Pension and postretirement plans (benefit) expense	5,341	(2,041)	1,570
Other	(6,215)us-gaap_OtherNoncashIncomeExpense	(5,701)us-gaap_OtherNoncashIncomeExpense	(1,182)us-gaap_OtherNoncashIncomeExpense
Qualified pension plan contributions	(12,999)us-gaap_PensionContributions	(14,818)us-gaap_PensionContributions	(18,143)us-gaap_PensionContributions
Changes in operating assets and liabilities, net of acquisitions and disposals:
Accounts and notes receivable, net	7,181	1,114	(64,182)
Inventories, net	6,977us-gaap_IncreaseDecreaseInInventories	(10,708)us-gaap_IncreaseDecreaseInInventories	(13,366)us-gaap_IncreaseDecreaseInInventories
Hedging activities, net	22	(39,325)	(1,850)
Other assets	(23,993)	(22,151)	1,431
Accounts payable	(9,951)	(702)	28,529
Other accrued liabilities	(6,552)	10,699	3,486
Net cash provided by operating activities	313,970	270,484	216,880
Cash flows provided by (disbursed for) investing activities:
Purchase of property, plant and equipment	(83,778)	(99,181)	(67,259)
Repurchase of independent distributor territories	(17,056)	(26,418)	(17,849)
Principal payments from notes receivable	23,718	21,596	16,498
Acquisition of businesses, net of cash acquired		(415,813)	(318,476)
Contingently refundable consideration	7,500us-gaap_ProceedsFromPreviousAcquisition
Proceeds from sale of new distribution territories		13,965
Proceeds from sale of property, plant and equipment	36,303	2,966	1,301
Other			348
Net cash disbursed for investing activities	(33,313)	(502,885)	(385,437)
Cash flows provided by (disbursed for) financing activities:
Dividends paid, including dividends on share-based payment awards	(102,302)us-gaap_PaymentsOfDividendsCommonStock	(92,840)us-gaap_PaymentsOfDividendsCommonStock	(86,489)us-gaap_PaymentsOfDividendsCommonStock
Exercise of stock options	21,014	13,685	13,881
Excess windfall tax benefit related to share-based payment awards	7,879	7,781	2,318
Payments for debt issuance costs			(3,882)us-gaap_PaymentsOfDebtIssuanceCosts
Payment of financing fees	(773)us-gaap_PaymentsOfFinancingCosts	(2,456)us-gaap_PaymentsOfFinancingCosts	(558)us-gaap_PaymentsOfFinancingCosts
Stock repurchases	(38,916)	(8,819)	(18,726)
Change in bank overdrafts	(679)	(499)	6,684
Proceeds from debt borrowings	1,175,200	2,169,950	1,482,481
Debt and capital lease obligation payments	(1,343,087)	(1,859,094)	(1,221,660)
Other		(52)
Net cash (disbursed for) provided by financing activities	(281,664)	227,656	174,049
Net (decrease) increase in cash and cash equivalents	(1,007)	(4,745)	5,492
Cash and cash equivalents at beginning of period	8,530	13,275	7,783
Cash and cash equivalents at end of period	7,523	8,530	13,275
Schedule of non cash investing and financing activities:
Capital and right-to-use lease obligations	12,399us-gaap_CapitalLeaseObligationsIncurred	8,971us-gaap_CapitalLeaseObligationsIncurred	4,867us-gaap_CapitalLeaseObligationsIncurred
Purchase of property, plant and equipment included in accounts payable	1,094	435	3,310
Cash paid during the period for:
Interest	26,065us-gaap_InterestPaidNet	25,996us-gaap_InterestPaidNet	16,106us-gaap_InterestPaidNet
Income taxes paid, net of refunds of $4,240, $323 and $7,194, respectively	78,587us-gaap_IncomeTaxesPaidNet	83,525us-gaap_IncomeTaxesPaidNet	56,377us-gaap_IncomeTaxesPaidNet
Lepage Bakeries Inc
Schedule of non cash investing and financing activities:
Shares issued for the Lepage acquisition			45,887
Notes issued			17,663
Executive Deferred Compensation Plan
Schedule of non cash investing and financing activities:
Issuance of executive deferred compensation plan common stock	264		34
Distributor Notes Receivable
Schedule of non cash investing and financing activities:
Notes issued	$ 44,346	$ 22,611	$ 1,891

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The net cash outflow or inflow from other investing activities. This element is used when there is not a more specific and appropriate element in the taxonomy.

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The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

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Aggregate cash payments for a combination of transactions that are classified as investing activities in which assets, which may include securities, other types of investments, or productive assets, are purchased from third-party sellers. This element can be used by entities to aggregate payments for all asset purchases that are classified as investing activities.

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The amount of pension and other (such as medical, dental and life insurance) postretirement benefit costs recognized during the period for (1) defined benefit plans (periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss) on assets, prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments) and for (2) defined contribution plans (to the extent that a plan's defined contributions to an individual's account are to be made for periods in which that individual renders services, the net cost for a period is the contribution called for in that period; if a plan calls for contributions for periods after an individual retires or terminates, the estimated cost is accrued during the employee's service period).

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The net cash inflow or outflow from other financing activities. This element is used when there is not a more specific and appropriate element in the taxonomy.

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The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

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No definition available.

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The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

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Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable.

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The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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The fair value of stock issued in noncash financing activities.

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