XML 83 R67.htm IDEA: XBRL DOCUMENT v3.25.4

Income Taxes - Provision Changes, Examination (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended
	Oct. 31, 2023	Mar. 31, 2025	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Previously recorded benefits of refund claims			$ 18.9
Refund claim for overpayment	$ 107.1
Proceeds from interest on income tax refunds		$ 11.3
Proceeds from interest on income tax refunds, net of taxes		$ 8.9

X

- Definition

Amount of cash inflows from interest on income tax refunds.

+ References

No definition available.

+ Details

Name:	fix_ProceedsFromInterestOnIncomeTaxRefunds
Namespace Prefix:	fix_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amount of cash inflows, after deducting taxes, from interest on income tax refunds.

+ References

No definition available.

+ Details

Name:	fix_ProceedsFromInterestOnIncomeTaxRefundsNetOfTax
Namespace Prefix:	fix_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_IncomeTaxDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount of the additional liability or refund received or expected based on a final settlement with a taxing authority.

+ References

No definition available.

+ Details

Name:	us-gaap_IncomeTaxExaminationLiabilityRefundAdjustmentFromSettlementWithTaxingAuthority
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The increase (decrease) during the reporting period in income taxes receivable, which represents the amount due from tax authorities for refunds of overpayments or recoveries of income taxes paid.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (a)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

+ Details

Name:	us-gaap_IncreaseDecreaseInIncomeTaxesReceivable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration