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Summary of Reclassifications Out of AOCI (Detail) - USD ($)
$ in Thousands

12 Months Ended

Dec. 28, 2019

Dec. 29, 2018

Dec. 30, 2017

Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]

Reclassification from AOCI, Derivative instruments net of tax

$ 2,664

$ (1,079)

$ (1,367)

Reclassification From AOCI, Current Period Net Of Tax

^[1]

(2,694)

(11,047)

(8,150)

Derivative Instruments

Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]

Reclassification from AOCI, Derivative instruments before tax

^[1]

3,565

(1,443)

(2,222)

Reclassification from AOCI, Derivative instruments tax (expense) benefit

^[1]

(901)

364

855

Reclassification from AOCI, Derivative instruments net of tax

^[1]

2,664

(1,079)

(1,367)

Reclassification From AOCI, Current Period Net Of Tax

2,664

(1,079)

Pension and postretirement plans, prior service credits

Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]

Reclassification from AOCI, Current Period, before Tax

^[1],[2]

(346)

(175)

(175)

Pension and postretirement plans, Settlement losses

Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]

Reclassification from AOCI, Current Period, before Tax

^[1],[2]

(7,781)

(4,649)

Pension and postretirement plans, actuarial losses

Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]

Reclassification from AOCI, Current Period, before Tax

^[1],[2]

(6,822)

(5,380)

(5,858)

Accumulated Defined Benefit Plans Adjustment

Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]

Reclassification from AOCI, Current Period, before Tax

^[1]

(7,168)

(13,336)

(10,682)

Reclassification from AOCI, Current Period, Tax benefit

^[1]

1,810

3,368

3,899

Reclassification From AOCI, Current Period Net Of Tax

^[1]

(5,358)

(9,968)

(6,783)

Interest Rate Contracts | Derivative Instruments

Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]

Reclassification from AOCI, Derivative instruments before tax

^[1]

(142)

(142)

(142)

Commodity Contract | Derivative Instruments

Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]

Reclassification from AOCI, Derivative instruments before tax

^[1],[3]

3,707

(1,301)

(2,080)

Reclassification from AOCI, Derivative instruments tax (expense) benefit

(936)

329

801

Reclassification from AOCI, Derivative instruments net of tax

$ 2,771

$ (972)

$ (1,279)

[1]	Amounts in parentheses indicate debits to determine net income.
[2]	These items are included in the computation of net periodic pension cost. See Note 22, Postretirement Plans, for additional information.
[3]	Amounts are presented as an adjustment to reconcile net income to net cash provided by operating activities on the Consolidated Statements of Cash Flows.

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- Definition

Amount before tax of reclassification adjustment from accumulated other comprehensive income of accumulated gain (loss) realized from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's deferred hedging gain (loss).

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