XML 56 R36.htm IDEA: XBRL DOCUMENT
v3.25.4

Leases (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2025
Leases [Abstract] |
Future minimum lease payments | Future minimum lease payments for operating and finance lease obligations as of December 31, 2025 consisted of the following:
| Operating Leases |  | Finance Leases |  |
| (in millions)
2026 | $ | 12.2 |  |  | $ | 1.5 |  |  |
2027 | 9.0 |  |  | 0.4 |  |  |
2028 | 7.1 |  |  | 0.1 |  |  |
2029 | 6.7 |  |  | — |  |  |
2030 | 5.5 |  |  | — |  |  |
Thereafter | 52.9 |  |  | — |  |  |
Total undiscounted future minimum obligations | 93.4 |  |  | 2.0 |  |  |
Less imputed interest | (33.6) |  |  | (0.1) |  |  |
Present value of net minimum lease obligations | $ | 59.8 |  |  | $ | 1.9 |  |  |
Balance sheet classification | The following table summarizes our operating and finance leases and their classification within the Consolidated Balance Sheet.
| December 31, 2025 |  | December 31, 2024
| (in millions)
Assets |  |  |
Operating - Other assets | $ | 59.2 |  |  | $ | 63.1 |
Finance - Property, plant, and equipment, net | 7.0 |  |  | 12.3 |
Total lease assets | 66.2 |  |  | 75.4 |
Liabilities |  |  |
Current |  |  |
Operating - Accrued liabilities | 8.0 |  |  | 8.6 |
Finance - Current portion of long-term debt | 1.5 |  |  | 5.2 |
Non-current |  |  |
Operating - Other liabilities | 51.8 |  |  | 54.7 |
Finance - Debt | 0.4 |  |  | 1.9 |
Total lease liabilities | $ | 61.7 |  |  | $ | 70.4 |
Cash flow information | The following table includes supplemental cash flow and non-cash information related to leases:
| December 31, 2025 |  | December 31, 2024 |  | December 31, 2023
Cash paid for amounts included in the measurement of lease liabilities |  |  |  |  |
Cash paid for operating leases | $ | 13.4 |  |  | $ | 10.8 |  |  | $ | 9.3 |
Cash paid for finance leases | $ | 5.2 |  |  | $ | 7.0 |  |  | $ | 7.0 |
Right-of-use assets obtained in exchange for lease obligations |  |  |  |  |
Operating leases | $ | 2.9 |  |  | $ | 36.7 |  |  | $ | 7.7 |
Finance leases | $ | — |  |  | $ | 1.0 |  |  | $ | 1.0 |
Other information | Other information about lease amounts recognized in our Consolidated Financial Statements is as follows:
| December 31, 2025 |  | December 31, 2024 |  |
Weighted average remaining lease term - operating leases | 11.9 years |  | 12.0 years |  |
Weighted average remaining lease term - finance leases | 1.2 years |  | 1.5 years |  |
Weighted average discount rate - operating leases | 6.9 | % |  | 6.8 | % |  |
Weighted average discount rate - finance leases | 5.5 | % |  | 4.4 | % |  |

X
- Definition Assets And Liabilities, Leases + References No definition available. + Details
Name: | aca_AssetsAndLiabilitiesLeasesTableTextBlock
Namespace Prefix: | aca_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Cash Flow Information, Leases + References No definition available. + Details
Name: | aca_CashFlowInformationLeasesTableTextBlock
Namespace Prefix: | aca_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-4 + Details
Name: | us-gaap_LeaseCostTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-6 + Details
Name: | us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration