|
Fair Value of Investment Held by Pension Plan (Detail) (USD $)
In Thousands, unless otherwise specified
|
Dec. 28, 2013
|
Dec. 29, 2012
|
Dec. 31, 2011
|
| Schedule of Pension Plan Assets by Fair Value [Line Items] |
|
|
|
|
|
| Defined Benefit Plan, Fair Value of Plan Assets |
$ 1,467,526
|
|
$ 1,332,211
|
|
$ 1,144,178
|
|
Cash and Cash Equivalents
|
|
|
|
|
|
| Schedule of Pension Plan Assets by Fair Value [Line Items] |
|
|
|
|
|
| Defined Benefit Plan, Fair Value of Plan Assets |
35,082
|
[1] |
119,962
|
[1] |
|
|
US Treasury and Government
|
|
|
|
|
|
| Schedule of Pension Plan Assets by Fair Value [Line Items] |
|
|
|
|
|
| Defined Benefit Plan, Fair Value of Plan Assets |
22
|
|
39,361
|
|
|
|
Corporate Government and Foreign Bonds
|
|
|
|
|
|
| Schedule of Pension Plan Assets by Fair Value [Line Items] |
|
|
|
|
|
| Defined Benefit Plan, Fair Value of Plan Assets |
884,453
|
|
432,410
|
|
|
|
Alternative Investments
|
|
|
|
|
|
| Schedule of Pension Plan Assets by Fair Value [Line Items] |
|
|
|
|
|
| Defined Benefit Plan, Fair Value of Plan Assets |
125,624
|
|
|
|
|
|
Insurance Contracts
|
|
|
|
|
|
| Schedule of Pension Plan Assets by Fair Value [Line Items] |
|
|
|
|
|
| Defined Benefit Plan, Fair Value of Plan Assets |
44,720
|
|
34,843
|
|
|
|
Commodities
|
|
|
|
|
|
| Schedule of Pension Plan Assets by Fair Value [Line Items] |
|
|
|
|
|
| Defined Benefit Plan, Fair Value of Plan Assets |
(1,505)
|
[2] |
821
|
[2] |
|
|
Real Estate
|
|
|
|
|
|
| Schedule of Pension Plan Assets by Fair Value [Line Items] |
|
|
|
|
|
| Defined Benefit Plan, Fair Value of Plan Assets |
|
|
45,922
|
|
|
|
Equity Securities | Domestic
|
|
|
|
|
|
| Schedule of Pension Plan Assets by Fair Value [Line Items] |
|
|
|
|
|
| Defined Benefit Plan, Fair Value of Plan Assets |
165,550
|
|
314,052
|
|
|
|
Equity Securities | Foreign
|
|
|
|
|
|
| Schedule of Pension Plan Assets by Fair Value [Line Items] |
|
|
|
|
|
| Defined Benefit Plan, Fair Value of Plan Assets |
213,580
|
|
344,840
|
|
|
|
Quoted Prices In Active Markets For Identical Assets, Level 1
|
|
|
|
|
|
| Schedule of Pension Plan Assets by Fair Value [Line Items] |
|
|
|
|
|
| Defined Benefit Plan, Fair Value of Plan Assets |
3,817
|
|
41,989
|
|
|
|
Quoted Prices In Active Markets For Identical Assets, Level 1 | Cash and Cash Equivalents
|
|
|
|
|
|
| Schedule of Pension Plan Assets by Fair Value [Line Items] |
|
|
|
|
|
| Defined Benefit Plan, Fair Value of Plan Assets |
5,322
|
[1] |
1,837
|
[1] |
|
|
Quoted Prices In Active Markets For Identical Assets, Level 1 | US Treasury and Government
|
|
|
|
|
|
| Schedule of Pension Plan Assets by Fair Value [Line Items] |
|
|
|
|
|
| Defined Benefit Plan, Fair Value of Plan Assets |
|
|
39,331
|
|
|
|
Quoted Prices In Active Markets For Identical Assets, Level 1 | Commodities
|
|
|
|
|
|
| Schedule of Pension Plan Assets by Fair Value [Line Items] |
|
|
|
|
|
| Defined Benefit Plan, Fair Value of Plan Assets |
(1,505)
|
[2] |
821
|
[2] |
|
|
Significant Other Observable Inputs, Level 2
|
|
|
|
|
|
| Schedule of Pension Plan Assets by Fair Value [Line Items] |
|
|
|
|
|
| Defined Benefit Plan, Fair Value of Plan Assets |
1,338,085
|
|
1,290,222
|
|
|
|
Significant Other Observable Inputs, Level 2 | Cash and Cash Equivalents
|
|
|
|
|
|
| Schedule of Pension Plan Assets by Fair Value [Line Items] |
|
|
|
|
|
| Defined Benefit Plan, Fair Value of Plan Assets |
29,760
|
[1] |
118,125
|
[1] |
|
|
Significant Other Observable Inputs, Level 2 | US Treasury and Government
|
|
|
|
|
|
| Schedule of Pension Plan Assets by Fair Value [Line Items] |
|
|
|
|
|
| Defined Benefit Plan, Fair Value of Plan Assets |
22
|
|
30
|
|
|
|
Significant Other Observable Inputs, Level 2 | Corporate Government and Foreign Bonds
|
|
|
|
|
|
| Schedule of Pension Plan Assets by Fair Value [Line Items] |
|
|
|
|
|
| Defined Benefit Plan, Fair Value of Plan Assets |
884,453
|
|
432,410
|
|
|
|
Significant Other Observable Inputs, Level 2 | Insurance Contracts
|
|
|
|
|
|
| Schedule of Pension Plan Assets by Fair Value [Line Items] |
|
|
|
|
|
| Defined Benefit Plan, Fair Value of Plan Assets |
44,720
|
|
34,843
|
|
|
|
Significant Other Observable Inputs, Level 2 | Real Estate
|
|
|
|
|
|
| Schedule of Pension Plan Assets by Fair Value [Line Items] |
|
|
|
|
|
| Defined Benefit Plan, Fair Value of Plan Assets |
|
|
45,922
|
|
|
|
Significant Other Observable Inputs, Level 2 | Equity Securities | Domestic
|
|
|
|
|
|
| Schedule of Pension Plan Assets by Fair Value [Line Items] |
|
|
|
|
|
| Defined Benefit Plan, Fair Value of Plan Assets |
165,550
|
|
314,052
|
|
|
|
Significant Other Observable Inputs, Level 2 | Equity Securities | Foreign
|
|
|
|
|
|
| Schedule of Pension Plan Assets by Fair Value [Line Items] |
|
|
|
|
|
| Defined Benefit Plan, Fair Value of Plan Assets |
213,580
|
|
344,840
|
|
|
|
Significant Unobservable Inputs, Level 3
|
|
|
|
|
|
| Schedule of Pension Plan Assets by Fair Value [Line Items] |
|
|
|
|
|
| Defined Benefit Plan, Fair Value of Plan Assets |
125,624
|
|
|
|
|
|
Significant Unobservable Inputs, Level 3 | Alternative Investments
|
|
|
|
|
|
| Schedule of Pension Plan Assets by Fair Value [Line Items] |
|
|
|
|
|
| Defined Benefit Plan, Fair Value of Plan Assets |
$ 125,624
|
|
|
|
|
|
|
|