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Stock Repurchases (Tables) | 3 Months Ended
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Mar. 31, 2019
Equity [Abstract] |
Schedule of Stock Repurchases | The following table summarizes our stock repurchases for the three months ended March 31, 2019 and 2018:
(Dollars in millions) |  | For the Three Months Ended March 31,
|  | 2019 |  | 2018
Stock Repurchases |  | Number of Shares Repurchased |  | Cost |  | Number of Shares Repurchased |  | Cost
Open Market (1) |  | 225,915 |  |  | $ | 91.0 |  |  | — |  |  | $ | — |
Other (2) |  | 42,696 |  |  | 18.2 |  |  | 6,185 |  |  | 2.0 |
Total |  | 268,611 |  |  | $ | 109.2 |  |  | 6,185 |  |  | $ | 2.0 |
(1) | Represents repurchases under authorizations by the board of directors for the repurchase of shares by us from time to time in the open market or in privately negotiated transactions. On February 13, 2017, the board of directors authorized the repurchase of up to one million shares of our common stock in addition to the board’s prior authorizations. As of March 31, 2019, we had authorization to repurchase 213,550 shares of our common stock.
(2) | Represents shares of common stock released to us by team members as payment of tax withholdings upon the vesting of restricted stock and restricted stock units and the conversion of restricted stock units to common stock.

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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://fasb.org/us-gaap/role/ref/legacyRef -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 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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 3: http://fasb.org/us-gaap/role/ref/legacyRef -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 4: http://fasb.org/us-gaap/role/ref/legacyRef -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 + Details
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