XML 43 R53.htm IDEA: XBRL DOCUMENT v2.4.1.9

Employer Share Plans - Additional Information (Detail) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015
Stock Based Compensation [Line Items]
Stock awards expiry	2024
Restricted Stock Awards [Member]
Stock Based Compensation [Line Items]
Maximum stock based compensation awards granted under the plan	9.6us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember

X

- Definition

Share based compensation arrangement by share based payment award expiration year.

+ References

No definition available.

+ Details

Name:	cbz_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationYear
Namespace Prefix:	cbz_
Data Type:	xbrli:gYearItemType
Balance Type:	na
Period Type:	duration

X

- Details

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

X

- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_AwardTypeAxis=us-gaap_RestrictedStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: