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Net Income (Loss) Per Share (Tables) | 3 Months Ended
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Mar. 31, 2021
Earnings Per Share [Abstract] |
Schedule Of Earnings Per Share Basic And Diluted | The following table sets forth the computation of basic and diluted net income (loss) per share (in millions, except per share amounts). An immaterial number of shares related to the Company's restricted stock units were excluded from the denominator for both periods presented, because inclusion of such shares would be antidilutive.
| Three months ended March 31, |  |
| 2021 |  | 2020 |  |  |  |
NUMERATOR: |  |  |  |  |  |  |
Net income (loss) | $ | 116 |  |  | $ | (94) |  |  |  |  |
DENOMINATOR: |  |  |  |  |  |  |
Weighted-average shares outstanding, basic | 591 |  |  | 515 |  |  |  |  |
Dilutive effects of convertible notes (a) | 16 |  |  | — |  |  |  |  |
Dilutive effect of stock warrants | 1 |  |  | — |  |  |  |  |
Dilutive effect of restricted stock units | 1 |  |  | — |  |  |  |  |
Adjusted weighted-average shares outstanding, diluted | 609 |  |  | 515 |  |  |  |  |
NET INCOME (LOSS) PER SHARE: |  |  |  |  |  |  |
Basic | $ | 0.20 |  |  | $ | (0.18) |  |  |  |  |
Diluted | $ | 0.19 |  |  | $ | (0.18) |  |  |  |  |
(a) Because the Company intends to settle conversions by paying cash up to the principal amount of the convertible notes, with any excess conversion value settled in shares of common stock, the convertible notes are being accounted for using the treasury stock method for the purposes of Net income (loss) per share. Using this method, the denominator will be affected when the average share price of the Company's common stock for a given period is greater than the conversion price of approximately $38.48 per share, and the Company reports Net income for the given period. For the three months ended March 31, 2021, the average market price of the Company's common stock exceeded this conversion price per share and as such, the common shares underlying the convertible notes were included in the diluted calculation. See Note 8 for further information on the convertible notes.

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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=6371337&loc=d3e3550-109257 + Details
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