XML 47 R37.htm IDEA: XBRL DOCUMENT
v3.23.2

Per Share Information (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2023
Earnings Per Share [Abstract] |
Schedule Of Earnings Per Share Diluted By Common Class | The following table sets forth the computation of basic and diluted income (loss) per common share:
(In millions, except per share amounts) | Three months ended June 30, |  | Six months ended June 30,
2023 |  | 2022 |  | 2023 |  | 2022
Numerator: |  |  |  |  |  |  |
Numerator for basic income (loss) per common share – |  |  |  |  |  |  |
Net income (loss) attributable to ATI | $ | 76.0 |  |  | $ | (38.0) |  |  | $ | 146.1 |  |  | $ | (7.1) |
Effect of dilutive securities: |  |  |  |  |  |  |
3.5% Convertible Senior Notes due 2025 | 2.6 |  |  | — |  |  | 5.2 |  |  | — |
Numerator for diluted net income (loss) per common share – |  |  |  |  |  |  |
Net income (loss) attributable to ATI after assumed conversions | $ | 78.6 |  |  | $ | (38.0) |  |  | $ | 151.3 |  |  | $ | (7.1) |
Denominator: |  |  |  |  |  |  |
Denominator for basic net income (loss) per common share – weighted average shares | 128.5 |  |  | 124.6 |  |  | 128.5 |  |  | 125.5 |
Effect of dilutive securities: |  |  |  |  |  |  |
Share-based compensation | 2.8 |  |  | — |  |  | 2.8 |  |  | — |
3.5% Convertible Senior Notes due 2025 | 18.8 |  |  | — |  |  | 18.8 |  |  | — |
Denominator for diluted net income (loss) per common share – adjusted weighted average shares and assumed conversions | 150.1 |  |  | 124.6 |  |  | 150.1 |  |  | 125.5 |
Basic net income (loss) attributable to ATI per common share | $ | 0.59 |  |  | $ | (0.31) |  |  | $ | 1.14 |  |  | $ | (0.06) |
Diluted net income (loss) attributable to ATI per common share | $ | 0.52 |  |  | $ | (0.31) |  |  | $ | 1.01 |  |  | $ | (0.06) |

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

X
- Definition Tabular disclosure of the effect of income (loss) on an entity's diluted earnings per share. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482689/260-10-45-3 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482635/260-10-55-52 + Details
Name: | us-gaap_ScheduleOfEarningsPerShareDilutedByCommonClassTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration