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PRO FORMA EARNINGS PER SHARE (Tables) | 9 Months Ended
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Sep. 30, 2021
Earnings Per Share [Abstract] |
Schedule of Basic and Diluted Earnings Per Share | Basic and diluted earnings per share are calculated as follows:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
In millions | 2021 |  | 2020 |  | 2021 |  | 2020
Net income | $ | 92 |  |  | $ | 51 |  |  | $ | 269 |  |  | $ | 105 |
Weighted-average common shares outstanding - basic and diluted | 44.1 |  | 44.1 |  | 44.1 |  | 44.1
Pro forma earnings per share - basic and diluted | $ | 2.09 |  |  | $ | 1.16 |  |  | $ | 6.10 |  |  | $ | 2.38 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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