XML 48 R42.htm IDEA: XBRL DOCUMENT
v3.22.1

Accounts receivable, unbilled revenue (contract assets) and unearned revenue or payments on account (contract liabilities) - Schedule of Unbilled Services and Unearned Revenue or Payments on Account (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2022 | Dec. 31, 2021
Revenue from Contract with Customer [Abstract] |  |
Unbilled services (unbilled revenue) | $ 674,509 | $ 623,121
Change in unbilled services (unbilled revenue) | $ 51,388 |
Percentage change in unbilled services (unbilled revenue) | 8.20% |
Unearned revenue (payments on account) | $ (1,300,980) | (1,323,961)
Change in unearned revenue (payments on account) | $ 22,981 |
Percentage change in unearned revenue (payments on account) | (1.70%) |
Net balance | $ (626,471) | $ (700,840)
Change in net balance | $ 74,369 |
Percentage change in net balance | (10.60%) |

X
- Definition Advance Payments Netted Against Unbilled Contracts Receivable + References No definition available. + Details
Name: | iclr_AdvancePaymentsNettedAgainstUnbilledContractsReceivable
Namespace Prefix: | iclr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Change In Advance Payments Netted Against Unbilled Contracts Receivable + References No definition available. + Details
Name: | iclr_ChangeInAdvancePaymentsNettedAgainstUnbilledContractsReceivable
Namespace Prefix: | iclr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Change In Advance Payments Netted Against Unbilled Contracts Receivable, Percent + References No definition available. + Details
Name: | iclr_ChangeInAdvancePaymentsNettedAgainstUnbilledContractsReceivablePercent
Namespace Prefix: | iclr_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Increase (Decrease) In Contract With Customer, Asset, Gross, Current + References No definition available. + Details
Name: | iclr_IncreaseDecreaseInContractWithCustomerAssetGrossCurrent
Namespace Prefix: | iclr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Increase (Decrease) In Contract With Customer, Asset, Gross, Current, Percent + References No definition available. + Details
Name: | iclr_IncreaseDecreaseInContractWithCustomerAssetGrossCurrentPercent
Namespace Prefix: | iclr_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Increase (Decrease) In Contract With Customer, Liability, Gross, Current + References No definition available. + Details
Name: | iclr_IncreaseDecreaseInContractWithCustomerLiabilityGrossCurrent
Namespace Prefix: | iclr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Increase (Decrease) In Contract with Customer, Liability, Gross, Current, Percent + References No definition available. + Details
Name: | iclr_IncreaseDecreaseInContractWithCustomerLiabilityGrossCurrentPercent
Namespace Prefix: | iclr_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, before allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as current. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=123360276&loc=SL49130531-203044 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=123360276&loc=SL49130533-203044 + Details
Name: | us-gaap_ContractWithCustomerAssetGrossCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=123360276&loc=SL49130531-203044 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=123360276&loc=SL49130532-203044 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130549-203045 + Details
Name: | us-gaap_ContractWithCustomerLiabilityCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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