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Long-Term Debt and Credit Lines (Tables) | 9 Months Ended
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Oct. 31, 2015
Long-Term Debt, Exclusive of Current Installments | The table below presents long-term debt, exclusive of current installments, as of October 31, 2015, January 31, 2015 and November 1, 2014. All amounts are net of unamortized debt discounts.
In thousands |  | October 31, 2015 |  |  | January 31, 2015 |  |  | November 1, 2014 |
General corporate debt: |  |  |  |  |  |  |  |  |  |  |  |
6.95% senior unsecured notes, maturing April 15, 2019 (effective interest rate of 6.98% after reduction of unamortized debt discount of $240 at October 31, 2015, $294 at January 31, 2015 and $311 at November 1, 2014) |  | $ | 374,760 |  |  | $ | 374,706 |  |  | $ | 374,689 |
2.50% senior unsecured notes, maturing May 15, 2023 (effective interest rate of 2.51% after reduction of unamortized debt discount of $335 at October 31, 2015, $367 at January 31, 2015 and $378 at November 1, 2014) |  |  | 499,665 |  |  |  | 499,633 |  |  |  | 499,622 |
2.75% senior unsecured notes, maturing June 15, 2021 (effective interest rate of 2.76% after reduction of unamortized debt discount of $418 at October 31, 2015, $475 at January 31, 2015 and $494 at November 1, 2014) |  |  | 749,582 |  |  |  | 749,525 |  |  |  | 749,506 |
Long-term debt |  | $ | 1,624,007 |  |  | $ | 1,623,864 |  |  | $ | 1,623,817 |

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- Definition Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(e),(f)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21538-112644 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21521-112644 + Details
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