XML 63 R34.htm IDEA: XBRL DOCUMENT
v3.22.4

Schedule II - Valuation Accounts and Reserves | 12 Months Ended
--- | ---
Dec. 31, 2022
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] |
Schedule II - Valuation Accounts and Reserves |
(Millions of dollars) | Balance at January 1 |  | Charged to Expense |  | Deductions |  | Other |  | Balance at December 31
2022 |  |  |  |  |  |  |  |  |
Deducted from asset accounts: |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts | $ | 1.6 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 1.6 |
Deferred tax asset valuation allowance | 111.2 |  |  | 24.8 |  |  | — |  |  | — |  |  | 136.0 |
2021 |  |  |  |  |  |  |  |  |
Deducted from asset accounts: |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts | $ | 1.6 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 1.6 |
Deferred tax asset valuation allowance | 106.4 |  |  | 4.8 |  |  | — |  |  | — |  |  | 111.2 |
2020 |  |  |  |  |  |  |  |  |
Deducted from asset accounts: |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts | $ | 1.6 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 1.6 |
Deferred tax asset valuation allowance | 103.1 |  |  | 3.3 |  |  | — |  |  | — |  |  | 106.4 |

X
- Definition The entire disclosure for valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Subsection 09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
Name: | srt_ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock
Namespace Prefix: | srt_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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