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Retirement and Other Benefit Plans | 6 Months Ended
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Jul. 29, 2017
Compensation and Retirement Disclosure [Abstract] |
Retirement and Other Benefit Plans |
Note 11 | Retirement and Other Benefit Plans
The following table sets forth the components of net periodic benefit income for the Company, including domestic and Canadian plans:
| Pension Benefits | Other Postretirement Benefits
| Thirteen Weeks Ended | Thirteen Weeks Ended
($ thousands) | July 29, 2017 |  | July 30, 2016 |  | July 29, 2017 |  | July 30, 2016 |
Service cost | $ | 2,383 |  | $ | 1,904 |  | $ | — |  | $ | — |
Interest cost | 3,727 |  | 3,810 |  | 16 |  | 15 |
Expected return on assets | (6,913 | ) | (7,252 | ) | — |  | — |
Amortization of: |  |  |  |  |  |  |  |
Actuarial loss (gain) | 996 |  | 39 |  | (35 | ) | (55 | )
Prior service income | (461 | ) | (461 | ) | — |  | — |
Settlement cost | — |  | 250 |  | — |  | — |
Total net periodic benefit income | $ | (268 | ) | $ | (1,710 | ) | $ | (19 | ) | $ | (40 | )
| Pension Benefits | Other Postretirement Benefits
| Twenty-six Weeks Ended | Twenty-six Weeks Ended
($ thousands) | July 29, 2017 |  | July 30, 2016 |  | July 29, 2017 |  | July 30, 2016 |
Service cost | $ | 4,850 |  | $ | 4,167 |  | $ | — |  | $ | — |
Interest cost | 7,474 |  | 7,671 |  | 34 |  | 30 |
Expected return on assets | (13,793 | ) | (14,475 | ) | — |  | — |
Amortization of: |  |  |  |
Actuarial loss (gain) | 2,148 |  | 77 |  | (73 | ) | (110 | )
Prior service income | (896 | ) | (921 | ) | — |  | — |
Settlement cost | — |  | 250 |  | — |  | — |
Total net periodic benefit income | $ | (217 | ) | $ | (3,231 | ) | $ | (39 | ) | $ | (80 | )

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- Definition The entire disclosure for pension and other postretirement benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450702-114947 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e2410-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6414203&loc=d3e39675-114964 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66047640&loc=d3e39622-114963 + Details
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