Fair Value of Assets and Liabilities - Fair Value of Financial Assets and Liabilities Measured on Recurring Basis (Detail) (USD $) In Thousands, unless otherwise specified
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Dec. 28, 2013
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Dec. 29, 2012
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Dec. 31, 2011
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
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Defined benefit pension plan investment assets |
$ 739,579 |
$ 643,768 |
$ 599,889 |
Total derivative assets |
1,002 |
1,088 |
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Total derivative liabilities |
(28) |
(268) |
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Net derivative asset |
974 |
820 |
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Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
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|
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Defined benefit pension plan investment assets |
216,057 |
163,150 |
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Total derivative assets |
0 |
0 |
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Total derivative liabilities |
0 |
0 |
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Net derivative asset |
0 |
0 |
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Deferred Compensation Plan, Fair Value of Plan Liability |
0 |
0 |
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Net effect of financial asset less financial liability |
216,057 |
163,150 |
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Fair Value, Inputs, Level 1 [Member] | Hedge Funds [Member] | Fair Value, Measurements, Recurring [Member]
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
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|
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Defined benefit pension plan investment assets |
0 |
0 |
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Fair Value, Inputs, Level 1 [Member] | U.S. Equity Securities [Member] | Fair Value, Measurements, Recurring [Member]
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|
|
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
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|
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Defined benefit pension plan investment assets |
140,880 |
111,878 |
|
Fair Value, Inputs, Level 1 [Member] | Foreign Equity Securities [Member] | Fair Value, Measurements, Recurring [Member]
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|
|
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
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|
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Defined benefit pension plan investment assets |
50,661 |
40,279 |
|
Fair Value, Inputs, Level 1 [Member] | Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
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|
|
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
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Defined benefit pension plan investment assets |
18,644 |
6,443 |
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Fair Value, Inputs, Level 1 [Member] | Real Estate [Member] | Fair Value, Measurements, Recurring [Member]
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|
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
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Defined benefit pension plan investment assets |
0 |
0 |
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Fair Value, Inputs, Level 1 [Member] | Commodities [Member] | Fair Value, Measurements, Recurring [Member]
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|
|
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
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Defined benefit pension plan investment assets |
0 |
0 |
|
Fair Value, Inputs, Level 1 [Member] | Cash and Other [Member] | Fair Value, Measurements, Recurring [Member]
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|
|
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
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Defined benefit pension plan investment assets |
5,872 |
4,550 |
|
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
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|
|
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
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Defined benefit pension plan investment assets |
208,039 |
194,643 |
|
Total derivative assets |
1,002 |
1,088 |
|
Total derivative liabilities |
(28) |
(268) |
|
Net derivative asset |
974 |
820 |
|
Deferred Compensation Plan, Fair Value of Plan Liability |
(17,036) |
(8,493) |
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Net effect of financial asset less financial liability |
191,977 |
186,970 |
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Fair Value, Inputs, Level 2 [Member] | Hedge Funds [Member] | Fair Value, Measurements, Recurring [Member]
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
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Defined benefit pension plan investment assets |
0 |
0 |
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Fair Value, Inputs, Level 2 [Member] | U.S. Equity Securities [Member] | Fair Value, Measurements, Recurring [Member]
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|
|
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
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Defined benefit pension plan investment assets |
27,902 |
20,824 |
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Fair Value, Inputs, Level 2 [Member] | Foreign Equity Securities [Member] | Fair Value, Measurements, Recurring [Member]
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|
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
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Defined benefit pension plan investment assets |
77,152 |
64,348 |
|
Fair Value, Inputs, Level 2 [Member] | Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
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|
|
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
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Defined benefit pension plan investment assets |
87,578 |
96,385 |
|
Fair Value, Inputs, Level 2 [Member] | Real Estate [Member] | Fair Value, Measurements, Recurring [Member]
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|
|
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
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Defined benefit pension plan investment assets |
0 |
0 |
|
Fair Value, Inputs, Level 2 [Member] | Commodities [Member] | Fair Value, Measurements, Recurring [Member]
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|
|
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
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Defined benefit pension plan investment assets |
15,407 |
13,086 |
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Fair Value, Inputs, Level 2 [Member] | Cash and Other [Member] | Fair Value, Measurements, Recurring [Member]
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|
|
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
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Defined benefit pension plan investment assets |
0 |
0 |
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Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
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|
|
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
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Defined benefit pension plan investment assets |
315,483 |
285,975 |
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Total derivative assets |
0 |
0 |
|
Total derivative liabilities |
0 |
0 |
|
Net derivative asset |
0 |
0 |
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Deferred Compensation Plan, Fair Value of Plan Liability |
0 |
0 |
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Net effect of financial asset less financial liability |
315,483 |
285,975 |
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Fair Value, Inputs, Level 3 [Member] | Hedge Funds [Member]
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|
|
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
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Defined benefit pension plan investment assets |
281,908 |
253,391 |
242,594 |
Fair Value, Inputs, Level 3 [Member] | Hedge Funds [Member] | Fair Value, Measurements, Recurring [Member]
|
|
|
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
|
Defined benefit pension plan investment assets |
281,908 |
253,391 |
|
Fair Value, Inputs, Level 3 [Member] | U.S. Equity Securities [Member] | Fair Value, Measurements, Recurring [Member]
|
|
|
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
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Defined benefit pension plan investment assets |
0 |
0 |
|
Fair Value, Inputs, Level 3 [Member] | Foreign Equity Securities [Member] | Fair Value, Measurements, Recurring [Member]
|
|
|
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
|
Defined benefit pension plan investment assets |
0 |
0 |
|
Fair Value, Inputs, Level 3 [Member] | Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
|
|
|
|
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
|
Defined benefit pension plan investment assets |
0 |
0 |
|
Fair Value, Inputs, Level 3 [Member] | Real Estate [Member]
|
|
|
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
|
Defined benefit pension plan investment assets |
33,575 |
32,584 |
30,729 |
Fair Value, Inputs, Level 3 [Member] | Real Estate [Member] | Fair Value, Measurements, Recurring [Member]
|
|
|
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
|
Defined benefit pension plan investment assets |
33,575 |
32,584 |
|
Fair Value, Inputs, Level 3 [Member] | Commodities [Member] | Fair Value, Measurements, Recurring [Member]
|
|
|
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
|
Defined benefit pension plan investment assets |
0 |
0 |
|
Fair Value, Inputs, Level 3 [Member] | Cash and Other [Member] | Fair Value, Measurements, Recurring [Member]
|
|
|
|
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
|
Defined benefit pension plan investment assets |
$ 0 |
$ 0 |
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