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Earnings Per Share Earnings Per Share (Notes) | 9 Months Ended
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Sep. 30, 2015
Earnings Per Share [Abstract] |
Earnings Per Share | Earnings Per Share The following table sets forth the computation of basic and diluted earnings per share (“EPS”) (shares in millions):
|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
|  | 2015 |  | 2014 |  | 2015 |  | 2014
Net income for basic EPS | $ | 184 |  |  | $ | 192 |  |  | $ | 318 |  |  | $ | 222 |
Convertible note interest, net of tax | — |  |  | — |  |  | — |  |  | 1 |
Net income for diluted EPS | $ | 184 |  |  | $ | 192 |  |  | $ | 318 |  |  | $ | 223 |
Basic weighted average shares outstanding | 102.7 |  |  | 103.9 |  |  | 104.7 |  |  | 105.2 |
Options and non-vested stock (a) | 1.3 |  |  | 2.0 |  |  | 1.4 |  |  | 2.0 |
Convertible debt | — |  |  | 4.0 |  |  | — |  |  | 4.0 |
Diluted weighted average shares outstanding | 104.0 |  |  | 109.9 |  |  | 106.1 |  |  | 111.2 |
Earnings per share: |  |  |  |  |  |  |
| Basic | $ | 1.80 |  |  | $ | 1.84 |  |  | $ | 3.04 |  |  | $ | 2.11 |
| Diluted | $ | 1.77 |  |  | $ | 1.74 |  |  | $ | 3.00 |  |  | $ | 2.00 |
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(a) | For the three and nine months ended September 30, 2015, 0.3 million and 0.1 million non-vested stock awards, respectively, have an anti-dilutive effect and are therefore excluded from the computation of diluted weighted average shares outstanding. For the three months ended September 30, 2014, there were no anti-dilutive securities excluded from the computation of diluted earnings per share. For the nine months ended September 30, 2014, the number of anti-dilutive securities which were excluded from the computation of diluted earnings per share was not significant.

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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 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1278-109256 Reference 2: 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 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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