|
Marketable Securities (Available for Sale Securities Measured at Estimated Fair Value on Recurring Basis) (Detail) (USD $)
In Thousands, unless otherwise specified
|
Dec. 28, 2013
|
Dec. 29, 2012
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Available-for-sale Securities, Total |
$ 1,651,968 |
$ 1,641,395 |
|
Fair Value, Measurements, Recurring
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Available-for-sale Securities, Total |
1,651,968 |
1,641,395 |
|
Fair Value, Measurements, Recurring | Mortgage-Backed Securities
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Available-for-sale Securities, Total |
437,330 |
650,895 |
|
Fair Value, Measurements, Recurring | Obligations of states and political subdivisions
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Available-for-sale Securities, Total |
647,354 |
499,857 |
|
Fair Value, Measurements, Recurring | Corporate Bond Securities
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Available-for-sale Securities, Total |
457,148 |
399,941 |
|
Fair Value, Measurements, Recurring | Common Stock
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Available-for-sale Securities, Total |
29,854 |
22,982 |
|
Fair Value, Measurements, Recurring | Other securities
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Available-for-sale Securities, Total |
80,282 |
67,720 |
|
Fair Value, Measurements, Recurring | Level 1
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Available-for-sale Securities, Total |
29,854 |
22,982 |
|
Fair Value, Measurements, Recurring | Level 1 | Mortgage-Backed Securities
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Available-for-sale Securities, Total |
0 |
0 |
|
Fair Value, Measurements, Recurring | Level 1 | Obligations of states and political subdivisions
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Available-for-sale Securities, Total |
0 |
0 |
|
Fair Value, Measurements, Recurring | Level 1 | Corporate Bond Securities
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Available-for-sale Securities, Total |
0 |
0 |
|
Fair Value, Measurements, Recurring | Level 1 | Common Stock
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Available-for-sale Securities, Total |
29,854 |
22,982 |
|
Fair Value, Measurements, Recurring | Level 1 | Other securities
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Available-for-sale Securities, Total |
0 |
0 |
|
Fair Value, Measurements, Recurring | Level 2
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Available-for-sale Securities, Total |
1,622,114 |
1,618,413 |
|
Fair Value, Measurements, Recurring | Level 2 | Mortgage-Backed Securities
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Available-for-sale Securities, Total |
437,330 |
650,895 |
|
Fair Value, Measurements, Recurring | Level 2 | Obligations of states and political subdivisions
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Available-for-sale Securities, Total |
647,354 |
499,857 |
|
Fair Value, Measurements, Recurring | Level 2 | Corporate Bond Securities
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Available-for-sale Securities, Total |
457,148 |
399,941 |
|
Fair Value, Measurements, Recurring | Level 2 | Common Stock
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Available-for-sale Securities, Total |
0 |
0 |
|
Fair Value, Measurements, Recurring | Level 2 | Other securities
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Available-for-sale Securities, Total |
80,282 |
67,720 |
|
Fair Value, Measurements, Recurring | Level 3
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Available-for-sale Securities, Total |
0 |
0 |
|
Fair Value, Measurements, Recurring | Level 3 | Mortgage-Backed Securities
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Available-for-sale Securities, Total |
0 |
0 |
|
Fair Value, Measurements, Recurring | Level 3 | Obligations of states and political subdivisions
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Available-for-sale Securities, Total |
0 |
0 |
|
Fair Value, Measurements, Recurring | Level 3 | Corporate Bond Securities
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Available-for-sale Securities, Total |
0 |
0 |
|
Fair Value, Measurements, Recurring | Level 3 | Common Stock
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Available-for-sale Securities, Total |
0 |
0 |
|
Fair Value, Measurements, Recurring | Level 3 | Other securities
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Available-for-sale Securities, Total |
$ 0 |
$ 0 |