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Summary Of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2021
Accounting Policies [Abstract] |
Computation of Basic and Diluted Earnings (Loss) Per Common Share | The following table presents the Company’s computation of basic and diluted earnings per common share for the years ended December 31, 2021, 2020, and 2019:
|  | Years Ended December 31, |
(in millions, except share and per share amounts) |  | 2021 |  |  | 2020 |  |  | 2019 |
Net income available to common stockholders |  | $ | 563 |  |  | $ | 478 |  |  | $ | 362 |
Less: Dividends paid on and earnings allocated to participating securities |  |  | (7 | ) |  |  | (6 | ) |  |  | (4 | )
Earnings applicable to common stock |  | $ | 556 |  |  | $ | 472 |  |  | $ | 358 |
Weighted average common shares outstanding |  |  | 463,865,661 |  |  |  | 462,605,341 |  |  |  | 465,380,010 |
Basic earnings per common share |  | $ | 1.20 |  |  | $ | 1.02 |  |  | $ | 0.77 |
Earnings applicable to common stock |  | $ | 556 |  |  | $ | 472 |  |  | $ | 358 |
Weighted average common shares outstanding |  |  | 463,865,661 |  |  |  | 462,605,341 |  |  |  | 465,380,010 |
Potential dilutive common shares |  |  | 767,058 |  |  |  | 676,061 |  |  |  | 283,322 |
Total shares for diluted earnings per common share computation |  |  | 464,632,719 |  |  |  | 463,281,402 |  |  |  | 465,663,332 |
Diluted earnings per common share and common share equivalents |  | $ | 1.20 |  |  | $ | 1.02 |  |  | $ | 0.77 |

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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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