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Stock Repurchases (Tables) | 6 Months Ended
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Jun. 30, 2015
Equity [Abstract] |
Schedule of Stock Repurchases | The following table summarizes our stock repurchases for the three and six months ended June 30, 2015 and 2014:
(Dollars in millions) |  | For the Three Months Ended June 30,
|  | 2015 |  | 2014
Stock Repurchases |  | Number of Shares Repurchased |  | Cost |  | Number of Shares Repurchased |  | Cost
Tender Offer (1) |  | — |  |  | $ | — |  |  | 915,750 |  |  | $ | 115.1 |
(Dollars in millions) |  | For the Six Months Ended June 30,
|  | 2015 |  | 2014
Stock Repurchases |  | Number of Shares Repurchased |  | Cost |  | Number of Shares Repurchased |  | Cost
Tender Offer (1) |  | — |  |  | — |  |  | 1,553,170 |  |  | 200.3 |
Other (2) |  | 6,065 |  |  | 1.1 |  |  | 137,876 |  |  | 18.4 |
Total |  | 6,065 |  |  | $ | 1.1 |  |  | 1,691,046 |  |  | $ | 218.7 |
(1) | Tender Offer Cost amounts include offering costs of $0.1 million and $0.3 million for the three and six months ended June 30, 2014, respectively.
(2) | Represents shares of common stock released to us as payment of tax withholdings due to us upon the vesting of restricted stock and restricted stock units.

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- Definition Tabular disclosure of treasury stock, including, but not limited to, average cost per share, description of share repurchase program, shares repurchased, shares held for each class of treasury stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23315-112656 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23285-112656 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23309-112656 + Details
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