XML 63 R49.htm IDEA: XBRL DOCUMENT
v3.22.4

Per Share Information (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2022
Earnings Per Share [Abstract] |
Schedule earnings per share | The following table sets forth the computation of basic and diluted net income (loss) per common share: (In millions, except per share amounts)
For the Years Ended December 31, |  | 2022 |  | 2021 |  | 2020
Numerator: |  |  |  |  |  |
Numerator for basic net income (loss) per common share - |  |  |  |  |  |
Net income (loss) attributable to ATI |  | $ | 130.9 |  |  | $ | (38.2) |  |  | $ | (1,572.6) |
Effect of dilutive securities: |  |  |  |  |  |
4.75% Convertible Senior Notes due 2022 |  | 2.2 |  |  | — |  |  | — |
3.5% Convertible Senior Notes due 2025 |  | 11.3 |  |  | — |  |  | — |
Numerator for diluted net income (loss) per common share - |  |  |  |  |  |
Net income (loss) attributable to ATI after assumed conversions |  | $ | 144.4 |  |  | $ | (38.2) |  |  | $ | (1,572.6) |
Denominator: |  |  |  |  |  |
Denominator for basic net income (loss) per common share—weighted average shares |  | 127.5 |  |  | 127.1 |  |  | 126.5 |
Effect of dilutive securities: |  |  |  |  |  |
Share-based compensation |  | 2.1 |  |  | — |  |  | — |
4.75% Convertible Senior Notes due 2022 |  | 2.8 |  |  | — |  |  | — |
3.5% Convertible Senior Notes due 2025 |  | 18.8 |  |  | — |  |  | — |
Denominator for diluted net income (loss) per common share—adjusted weighted average shares and assumed conversions |  | 151.2 |  |  | 127.1 |  |  | 126.5 |
Basic net income (loss) attributable to ATI per common share |  | $ | 1.03 |  |  | $ | (0.30) |  |  | $ | (12.43) |
Diluted net income (loss) attributable to ATI per common share |  | $ | 0.96 |  |  | $ | (0.30) |  |  | $ | (12.43) |

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 -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126958026&loc=d3e1278-109256 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI https://asc.fasb.org/extlink&oid=128363288&loc=d3e4984-109258 + Details
Name: | us-gaap_ScheduleOfEarningsPerShareDilutedByCommonClassTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration