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STOCKHOLDERS' EQUITY: (Details 2) - USD ($) $ / shares in Units, $ in Millions | 1 Months Ended | 3 Months Ended | 12 Months Ended | 60 Months Ended | 90 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Apr. 30, 2015 | Mar. 31, 2015 | Feb. 28, 2015 | Jan. 31, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Jun. 30, 2015 | Dec. 31, 2008
SCC share repurchase program: |  |  |  |  |  |  |  |  |  |  |
Amount authorized for share repurchase program |  |  |  |  | $ 3,000.0 |  |  |  |  | $ 3,000.0 | $ 500.0
Total Number of Shares Purchased | 1,511,200 | 4,563,649 | 2,590,076 | 5,927,154 | 1,511,200 | 13,080,879 | 22,711,428 | 10,245,000 | 46,914,486 | 94,462,993 |
Average Price Paid per Share (in dollars per share) | $ 29.42 | $ 29.16 | $ 29.45 | $ 27.12 | $ 29.42 | $ 29.29 | $ 30.06 | $ 27.47 | $ 18.72 | $ 23.89 |
Total Number of Shares Purchased as Part of Publicly Announced Plan |  | 92,951,793 | 88,388,144 | 85,798,068 | 94,462,993 | 92,951,793 | 79,870,914 | 57,159,486 | 46,914,486 | 94,462,993 |
Maximum Number of Shares that May Yet Be Purchased Under the Plan @ $29.41 |  | 25,269,210 |  |  |  | 25,269,210 |  |  |  |  |
Total Cost | $ 44.5 | $ 133.1 | $ 76.3 | $ 160.7 | $ 44.5 | $ 370.1 | $ 682.8 | $ 281.4 | $ 878.1 | $ 2,256.9 |
Percentage of ownership interest held by the parent company |  |  |  |  | 86.10% |  |  |  |  | 86.10% |

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