|
Pension and Other Postretirement Benefit Plans 7 (Details) (USD $)
In Thousands, unless otherwise specified
|
8 Months Ended |
12 Months Ended |
|
Dec. 29, 2013
|
Apr. 28, 2013
|
Apr. 29, 2012
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Fair value of plan assets at the end of the year |
$ 3,654,688 |
$ 3,379,143 |
$ 3,140,834 |
|
Fair Value, Inputs, Level 3 [Member]
|
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Fair value of plan assets at the beginning of the year |
268,117 |
226,720 |
140,744 |
| Acquisitions |
8,211 |
58,701 |
96,938 |
| Transfers In / (Out) |
0 |
(10,498) |
10,138 |
| Dispositions |
(767) |
(3,605) |
(21,262) |
| Realized Gain /(Loss) |
741 |
(6,637) |
753 |
| Unrealized Gain /(Loss) |
31,813 |
3,436 |
(591) |
| Fair value of plan assets at the end of the year |
308,115 |
268,117 |
226,720 |
|
Fixed Income Funds [Member]
|
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Fair value of plan assets at the end of the year |
942,244 |
980,296 |
981,496 |
|
Fixed Income Funds [Member] | Fair Value, Inputs, Level 3 [Member]
|
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Fair value of plan assets at the beginning of the year |
11,336 |
10,486 |
9,649 |
| Acquisitions |
0 |
0 |
0 |
| Transfers In / (Out) |
0 |
0 |
0 |
| Dispositions |
0 |
0 |
0 |
| Realized Gain /(Loss) |
0 |
0 |
0 |
| Unrealized Gain /(Loss) |
(101) |
850 |
837 |
| Fair value of plan assets at the end of the year |
11,235 |
11,336 |
10,486 |
|
Other Investments [Member]
|
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Fair value of plan assets at the end of the year |
296,880 |
256,781 |
216,234 |
|
Other Investments [Member] | Fair Value, Inputs, Level 3 [Member]
|
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Fair value of plan assets at the beginning of the year |
256,781 |
216,234 |
131,095 |
| Acquisitions |
8,211 |
58,701 |
96,938 |
| Transfers In / (Out) |
0 |
(10,498) |
10,138 |
| Dispositions |
(767) |
(3,605) |
(21,262) |
| Realized Gain /(Loss) |
741 |
(6,637) |
753 |
| Unrealized Gain /(Loss) |
31,914 |
2,586 |
(1,428) |
| Fair value of plan assets at the end of the year |
$ 296,880 |
$ 256,781 |
$ 216,234 |