XML 40 R28.htm IDEA: XBRL DOCUMENT
v3.24.1.u1

Earnings Per Share (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2024
Earnings Per Share [Abstract] |
Basic and diluted earnings (loss) per share and securities excluded from the calculation of diluted EPS | The following table shows the basic and diluted (loss) earnings per share:
|  | For the three months ended March 31,
|  | 2024 |  | 2023
|  | Net Income (Loss) |  | Shares (in millions) |  | $ Per Share |  | Net Income (Loss) |  | Shares (in millions) |  | $ Per Share
Net income (loss) attributable to Century stockholders |  | $ | 246.8 |  |  |  |  |  |  | $ | (38.6) |  |  |  |  |
Less: net income allocated to participating securities |  | 13.2 |  |  |  |  |  |  | — |  |  |  |  |
Basic EPS: |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) allocated to common stockholders |  | $ | 233.6 |  |  | 92.7 |  |  | $ | 2.52 |  |  | $ | (38.6) |  |  | 92.3 |  |  | $ | (0.42) |
Effect of Dilutive Securities(1): |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation |  | (12.7) |  |  | 1.4 |  |  |  |  | — |  |  | — |  |  |
Convertible senior notes |  | 1.9 |  |  | 4.6 |  |  |  |  | — |  |  | — |  |  |
Diluted EPS: |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) allocated to common stockholders |  | $ | 222.8 |  |  | 98.7 |  |  | $ | 2.26 |  |  | $ | (38.6) |  |  | 92.3 |  |  | $ | (0.42) |
|  | Three months ended March 31, |  |
Securities excluded from the calculation of diluted EPS (in millions)(1): |  | 2024 |  | 2023 |  |  |  |
Share-based compensation |  | — |  |  | 0.9 |  |  |  |  |
Convertible preferred shares |  | 5.2 |  |  | 5.4 |  |  |  |  |
Convertible notes |  | — |  |  | 4.6 |  |  |  |  |
(1)In periods when we report a net loss, all share-based compensation awards, convertible preferred shares and convertible senior notes are excluded from the calculation of diluted weighted average shares outstanding because of their anti-dilutive effect on earnings (loss) per share.

X
- Definition Schedule of Earnings Per Share, Basic and Diluted and Antidilutive Securities Excluded from Computation + References No definition available. + Details
Name: | cenx_ScheduleOfEarningsPerShareBasicAndDilutedAndAntidilutiveSecuritiesExcludedFromComputationTableTextBlock
Namespace Prefix: | cenx_
Data Type: | dtr-types1:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_EarningsPerShareAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration