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Debt (Tables) | 12 Months Ended
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Dec. 31, 2014
Debt Disclosure [Abstract] |
Summary of Debt | At December 31, 2014 and 2013, our long-term debt and interest rates on that debt were as follows (dollars in millions):
| December 31, 2014 |  | December 31, 2013
| Amount |  | Interest Rate |  | Amount |  | Interest Rate
Revolving Credit Facility, due October 2018 | $ | — |  |  | — | % |  | $ | — |  |  | — | %
Five-Year Term Loan, due October 2018 | 65.0 |  |  | 1.54 |  |  | 650.0 |  |  | 1.54 |
Seven-Year Term Loan, due October 2020 | 643.5 |  |  | 1.79 |  |  | 650.0 |  |  | 1.79 |
6.50% Senior Notes due March 2018 | 150.0 |  |  | 6.50 |  |  | 150.0 |  |  | 6.50 |
3.90% Senior Notes, net of discounts of $0.3 million and $0.3 million as of December 31, 2014 and 2013, respectively, due June 2022 | 399.7 |  |  | 3.90 |  |  | 399.7 |  |  | 3.90 |
4.50% Senior Notes, net of discount of $1.7 million and $1.9 million as of December 31, 2014 and 2013, respectively, due November 2023 | 698.3 |  |  | 4.50 |  |  | 698.1 |  |  | 4.50 |
3.65% Senior Notes, net of discount of $1.1 million as of December 31, 2014, due September 2024 | 398.9 |  |  | 3.65 |  |  | — |  |  | — |
Total | 2,355.4 |  |  | 3.56 |  |  | 2,547.8 |  |  | 3.08 |
Less current portion | 6.5 |  |  | 1.79 |  |  | 39.0 |  |  | 1.59 |
Total long-term debt | $ | 2,348.9 |  |  | 3.56 | % |  | $ | 2,508.8 |  |  | 3.10 | %

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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 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400 Reference 2: 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 3: 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 4: 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 5: 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 6: 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 7: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 8: 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 9: 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 Reference 10: 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 11: 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 + Details
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