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Share Repurchase Program (Details) (USD $)
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3 Months Ended | 6 Months Ended | |||||||
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Jun. 30, 2011
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Mar. 31, 2011
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Jun. 30, 2010
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Mar. 31, 2010
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Jun. 30, 2011
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Jun. 30, 2010
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| Share Repurchases Program [Abstract] | |||||||||
| BOD Authorized | Effective April 1, 2011, our Board of Directors authorized the repurchase of 40 million common shares of UPC by March 31, 2014, replacing our previous repurchase program. | Effective April 1, 2011, our Board of Directors authorized the repurchase of 40 million common shares of UPC by March 31, 2014, replacing our previous repurchase program. | |||||||
| Shares repurchased | 3,576,399 | 2,636,178 | [1] | 6,496,400 | 0 | 6,212,577 | 6,496,400 | ||
| Average purchase price | $ 100.75 | $ 94.10 | $ 71.74 | $ 0 | $ 97.92 | $ 71.74 | |||
| Remaining number of shares yet to be repurchased | 36,423,601 | 36,423,601 | |||||||
| Stock repurchased since inception | $ 4,800,000,000 | $ 4,800,000,000 | |||||||
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