XML 105 R85.htm IDEA: XBRL DOCUMENT v2.4.1.9

Commitments and Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014 Class_Member	Dec. 31, 2013
Commitments And Contingencies [Line Items]
License bonds outstanding amount	$ 1.9cbz_LicenseBondsOutstandingAmount	$ 2.4cbz_LicenseBondsOutstandingAmount
Number of class member opted out of settlement before finalization	18cbz_CommitmentAndContingenciesNumberOfClassMembersOptedOutOfSettlement
Ashkenazi [Member]
Commitments And Contingencies [Line Items]
Damages sought amount	92.0us-gaap_LossContingencyDamagesSoughtValue / us-gaap_LitigationCaseAxis = cbz_AshkenaziMember
Victims Recovery [Member]
Commitments And Contingencies [Line Items]
Damages sought amount	53.0us-gaap_LossContingencyDamagesSoughtValue / us-gaap_LitigationCaseAxis = cbz_VictimsRecoveryMember
Rader [Member]
Commitments And Contingencies [Line Items]
Damages sought amount	15.0us-gaap_LossContingencyDamagesSoughtValue / us-gaap_LitigationCaseAxis = cbz_RaderMember
Marsh [Member]
Commitments And Contingencies [Line Items]
Damages sought amount	115.0us-gaap_LossContingencyDamagesSoughtValue / us-gaap_LitigationCaseAxis = cbz_MarshMember
Facciola and ML Liquidating Trust [Member]
Commitments And Contingencies [Line Items]
Damages sought amount	200.0us-gaap_LossContingencyDamagesSoughtValue / us-gaap_LitigationCaseAxis = cbz_FacciolaAndMlLiquidatingTrustMember
Baldino Group [Member]
Commitments And Contingencies [Line Items]
Damages sought amount	16.0us-gaap_LossContingencyDamagesSoughtValue / us-gaap_LitigationCaseAxis = cbz_BaldinoGroupMember
Number of Plaintiffs	2us-gaap_LossContingencyNumberOfPlaintiffs / us-gaap_LitigationCaseAxis = cbz_BaldinoGroupMember
Affiliated Entity [Member] | Financial Standby Letter of Credit [Member]
Commitments And Contingencies [Line Items]
Letters of credit outstanding	1.9us-gaap_GuaranteeObligationsMaximumExposure / us-gaap_GuaranteeObligationsByNatureAxis = us-gaap_FinancialStandbyLetterOfCreditMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_AffiliatedEntityMember	1.9us-gaap_GuaranteeObligationsMaximumExposure / us-gaap_GuaranteeObligationsByNatureAxis = us-gaap_FinancialStandbyLetterOfCreditMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_AffiliatedEntityMember
Letters of Credit [Member]
Commitments And Contingencies [Line Items]
Letters of credit outstanding	$ 2.3us-gaap_LettersOfCreditOutstandingAmount / us-gaap_ShortTermDebtTypeAxis = us-gaap_LetterOfCreditMember	$ 2.5us-gaap_LettersOfCreditOutstandingAmount / us-gaap_ShortTermDebtTypeAxis = us-gaap_LetterOfCreditMember

X

- Definition

Commitment and contingencies number of class members opted out of settlement.

+ References

No definition available.

+ Details

Name:	cbz_CommitmentAndContingenciesNumberOfClassMembersOptedOutOfSettlement
Namespace Prefix:	cbz_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	cbz_CommitmentsAndContingenciesLineItems
Namespace Prefix:	cbz_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

License bonds outstanding.

+ References

No definition available.

+ Details

Name:	cbz_LicenseBondsOutstandingAmount
Namespace Prefix:	cbz_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 4

-Subparagraph (b)(1)

-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248

+ Details

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

X

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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

X

- Definition

The value (monetary amount) of the award the plaintiff seeks in the legal matter.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 9

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Number of plaintiffs that have filed claims pertaining to a loss contingency.

+ References

No definition available.

+ Details

Name:	us-gaap_LossContingencyNumberOfPlaintiffs
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_LitigationCaseAxis=cbz_AshkenaziMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LitigationCaseAxis=cbz_BaldinoGroupMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LitigationCaseAxis=cbz_FacciolaAndMlLiquidatingTrustMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LitigationCaseAxis=cbz_MarshMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LitigationCaseAxis=cbz_RaderMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LitigationCaseAxis=cbz_VictimsRecoveryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=us-gaap_AffiliatedEntityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ShortTermDebtTypeAxis=us-gaap_LetterOfCreditMember
Namespace Prefix:
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Period Type: