XML 61 R52.htm IDEA: XBRL DOCUMENT
v3.25.3

Contracts with Customers - Summary of Contract Assets and Contract Liabilities (Parenthetical) (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Revenue from Contract with Customer [Abstract] |  |
Contract retentions | $ 109.3 | $ 89.8
Contract retentions, not expected to be paid in next 12 months | 54.1 |
Contract assets, net claims recovery estimates | $ 58.6 | $ 70.7

X
- Definition Contract receivable retainage asset (liabilities) net, due after one year. + References No definition available. + Details
Name: | psn_ContractReceivableRetainageAssetLiabilitiesNetDueAfterOneYear
Namespace Prefix: | psn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Contract receivable retainage assets (Liabilities) net. + References No definition available. + Details
Name: | psn_ContractReceivableRetainageAssetsLiabilitiesNet
Namespace Prefix: | psn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of billed or unbilled claims or other similar items subject to uncertainty concerning their determination or ultimate realization under long-term contracts. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)(c)(3)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_ContractsReceivableClaimsAndUncertainAmounts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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