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Earnings Per Share | 9 Months Ended
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Sep. 30, 2014
Earnings Per Share [Abstract] |
Earnings Per Share | Earnings Per Share (“EPS”)
|  | Three Months Ended |  | Nine Months Ended
|  | September 30, |  | September 30,
(in millions) |  | 2014 |  | 2013 |  | 2014 |  | 2013
Net income |  | $ | 248.3 |  |  | $ | 37.2 |  |  | $ | 279.1 |  |  | $ | 93.5 |
Weighted average shares for basic EPS |  | 120.0 |  |  | 120.0 |  |  | 112.3 |  |  | 112.3 |
Dilutive potential shares from grants of RSUs, PRSUs and stock options(a) |  | 0.7 |  |  | 0.7 |  |  | 0.5 |  |  | 0.5 |
Weighted average shares for diluted EPS |  | 120.7 |  |  | 120.7 |  |  | 112.8 |  |  | 112.8 |
(a) | The potential impact of an aggregate 0.1 million granted RSUs, PRSUs and stock options for each of the three months and nine months ended September 30, 2014, was antidilutive.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1278-109256 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1252-109256 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=32703322&loc=d3e4984-109258 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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