XML 24 R14.htm IDEA: XBRL DOCUMENT
v3.23.3

Stock-Based Compensation | 9 Months Ended
--- | ---
Sep. 30, 2023
Share-Based Payment Arrangement [Abstract] |
Stock-Based Compensation | Stock-Based Compensation Stock-based compensation cost by award type follows:
(in millions) |  | Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2023 |  | 2022 |  | 2023 |  | 2022
Stock option awards |  | $ | 3.6 |  |  | $ | 1.6 |  |  | $ | 11.0 |  |  | $ | 5.7 |
Performance share awards |  | 2.2 |  |  | 1.8 |  |  | 6.8 |  |  | 6.5 |
Restricted stock awards |  | 1.8 |  |  | 1.1 |  |  | 6.6 |  |  | 5.6 |
Total stock-based compensation cost incurred |  | 7.6 |  |  | 4.5 |  |  | 24.4 |  |  | 17.8 |
Capitalized cost during the period |  | (1.1) |  |  | — |  |  | (3.4) |  |  | — |
Amortization of capitalized cost during the period |  | 1.1 |  |  | — |  |  | 3.6 |  |  | — |
Total stock-based compensation expense |  | $ | 7.6 |  |  | $ | 4.5 |  |  | $ | 24.6 |  |  | $ | 17.8 |

X
- Definition The entire disclosure for share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//718/tableOfContent Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h)(2)(i) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (l) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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