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Reportable Segment Information Narrative (Details)	Sep. 30, 2018 brand
Segment Reporting [Abstract]
Number of brands	12

X

- Definition

Number of Brands

+ References

No definition available.

+ Details

Name:	chh_NumberOfBrands
Namespace Prefix:	chh_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	us-gaap_SegmentReportingAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration