Optional Addition To Borrowing Capacity

No definition available.

Name:	chh_DebtInstrumentAdditionalBorrowingCapacityAmountAvailable
Namespace Prefix:	chh_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Debt Instrument, Extension, Term

+ References

No definition available.

+ Details

Name:	chh_DebtInstrumentExtensionTerm
Namespace Prefix:	chh_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Redemption Price, Percent of Principal Balance

+ References

No definition available.

+ Details

Name:	chh_DebtInstrumentRedemptionPricePercentOfPrincipalBalance
Namespace Prefix:	chh_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Total advances received under the economic development agreements with governmental entities

+ References

No definition available.

+ Details

Name:	chh_EconomicDevelopmentAgreementsAdvancesReceived
Namespace Prefix:	chh_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Economic Development Agreements - Advances not yet Received

+ References

No definition available.

+ Details

Name:	chh_EconomicDevelopmentAgreementsAdvancesnotyetReceived
Namespace Prefix:	chh_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Economic Development Agreements - Term (in years)

+ References

No definition available.

+ Details

Name:	chh_EconomicDevelopmentAgreementsTerminyears
Namespace Prefix:	chh_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Total advances agreed to be advanced by governmental entities based on economic development agreements

+ References

No definition available.

+ Details

Name:	chh_EconomicDevelopmentAgreementsTotalAdvancesAgreedUpon
Namespace Prefix:	chh_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Fixed Charge Coverage Ratio

+ References

No definition available.

+ Details

Name:	chh_FixedChargeCoverageRatio
Namespace Prefix:	chh_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Total Leverage Ratio

+ References

No definition available.

+ Details

Name:	chh_LeverageRatio
Namespace Prefix:	chh_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of Loan Extensions

+ References

No definition available.

+ Details

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

- Definition

Cash outflow in the form of special dividends to common shareholders.

+ References

No definition available.

+ Details

Name:	chh_PaymentsOfSpecialDividends
Namespace Prefix:	chh_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

This element represents the carrying value of a short-term real estate loan to finance building costs. The funds are disbursed as needed or in accordance with a prearranged plan; generally, a portion of the funds is disbursed at inception and the remainder as construction progresses. The money is repaid on completion of the project, usually from the proceeds of a mortgage loan. The rate is normally higher than the prime rate, and there is usually an origination fee. The effective yield on these loans tends to be high, and the lender has a security interest in the real property. Note that there are separate concepts for the current and noncurrent portions of long-term construction loans.

+ References

+ Details

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

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

+ Details

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

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 6
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6036836-161870

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateEffectivePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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

- Definition

Amount of payment greater than the preceding installment payments to be paid at final maturity date of debt.

+ References

No definition available.

+ Details

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

- Definition

Amount, after accumulated amortization, of debt discount.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28541-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

+ Details

Name:	us-gaap_DebtInstrumentUnamortizedDiscount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount, after accumulated amortization, of debt premium.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28541-108399

+ Details

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

- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28555-108399

+ Details

Name:	us-gaap_DeferredFinanceCostsNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of interest capitalized during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391

+ Details

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

- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityCommitmentFeePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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

- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(3)
-URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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

- Definition

The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

+ References

+ Details

Name:	us-gaap_UnamortizedDebtIssuanceExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_DividendsAxis=chh_A2012SpecialCashDividendMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	chh_DebtInstrumentUseOfProceedsAxis=chh_A2012SpecialCashDividendMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_ConstructionLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_CollateralizedMortgageObligationsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=chh_EconomicDevelopmentLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=chh_A450MillionSeniorNoteMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_SeniorNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=chh_A600MillionSeniorNoteMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	chh_DebtInstrumentbyTermCategoryAxis=chh_TotalLeverageRatioexceeds5.50to1.00Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	chh_DebtInstrumentUseOfProceedsAxis=chh_AlternativeCurrencyLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	chh_DebtInstrumentUseOfProceedsAxis=chh_SwinglineLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_BaseRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=chh_A400MillionSeniorNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	chh_DebtInstrumentbyTermCategoryAxis=chh_DebtInstrumentRedemptionOptionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=chh_TreasuryRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=chh_A250MillionSeniorNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Debt - Narrative (Details)				1 Months Ended	12 Months Ended
Debt - Narrative (Details)	Aug. 23, 2012 USD ($)	Jun. 27, 2012 USD ($)	Aug. 25, 2010 USD ($)	Mar. 31, 2018 USD ($) debt_extension	Dec. 31, 2018 USD ($)	Aug. 20, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 30, 2014 USD ($)	Apr. 30, 2013 USD ($)
Debt Instrument [Line Items]
Construction loan				$ 34,900,000
2012 Special Cash Dividend \| 2012 Special Cash Dividend
Debt Instrument [Line Items]
Payments of special dividends	$ 600,700,000
Revolving Credit Facilities
Debt Instrument [Line Items]
Debt issuance costs, net					$ 3,200,000
Construction Loan
Debt Instrument [Line Items]
Debt instrument, extension, term				1 year
Debt issuance costs, net					$ 900,000
Debt instrument effective interest rate					6.70%
Number of loan extensions \| debt_extension				2
Interest costs capitalized					$ 69,000
Construction Loan \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate					0.435%
Collateralized Mortgage
Debt Instrument [Line Items]
Debt instrument stated interest rate								7.26%
Debt instrument effective interest rate					4.57%		4.57%
Mortgage obligation								$ 9,500,000
Debt instrument, future balloon payment								6,900,000
Debt instrument, unamortized premium								$ 1,200,000
Economic Development Loans
Debt Instrument [Line Items]
Debt instrument stated interest rate					3.00%
Debt instrument effective interest rate					3.00%		3.00%
Economic development agreements - total advances agreed upon									$ 4,400,000
Economic development agreements - advances received					$ 4,200,000
Economic development agreements - advances not yet received					$ 200,000
Economic development agreements - term					10 years
$450 Million Senior Note \| Revolving Credit Facilities
Debt Instrument [Line Items]
Line of credit maximum borrowing capacity						$ 450,000,000
Unamortized debt issuance expense					$ 1,500,000
$450 Million Senior Note \| Senior Notes
Debt Instrument [Line Items]
Debt instrument, face amount							$ 450,000,000
Debt instrument effective interest rate							2.84%
$600 Million Senior Note \| Revolving Credit Facilities
Debt Instrument [Line Items]
Line of credit maximum borrowing capacity					$ 600,000,000
Debt instrument, extension, term					1 year
Debt instrument additional borrowing capacity					$ 250,000,000
Total leverage ratio (not more than)					2.5
Debt issuance costs, net					$ 1,700,000
$600 Million Senior Note \| Revolving Credit Facilities \| Minimum
Debt Instrument [Line Items]
Credit facility, commitment fee percentage					0.075%
Fixed charge coverage ratio (not less than)					2.5
$600 Million Senior Note \| Revolving Credit Facilities \| Maximum
Debt Instrument [Line Items]
Total leverage ratio (not more than)					4.5
Credit facility, commitment fee percentage					0.25%
$600 Million Senior Note \| Revolving Credit Facilities \| Total Leverage Ratio exceeds 5.50 to 1.00 \| Maximum
Debt Instrument [Line Items]
Total leverage ratio (not more than)					5.5
$600 Million Senior Note \| Revolving Credit Facilities \| Alternative Currency Loans
Debt Instrument [Line Items]
Line of credit maximum borrowing capacity					$ 35,000,000
$600 Million Senior Note \| Revolving Credit Facilities \| Swingline Loans
Debt Instrument [Line Items]
Line of credit maximum borrowing capacity					25,000,000
$600 Million Senior Note \| Senior Notes
Debt Instrument [Line Items]
Debt instrument, face amount					$ 600,000,000
Debt instrument effective interest rate					3.50%
$600 Million Senior Note \| Senior Notes \| London Interbank Offered Rate (LIBOR) \| Minimum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate					0.90%
$600 Million Senior Note \| Senior Notes \| London Interbank Offered Rate (LIBOR) \| Maximum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate					1.50%
$600 Million Senior Note \| Senior Notes \| Base Rate \| Minimum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate					0.00%
$600 Million Senior Note \| Senior Notes \| Base Rate \| Maximum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate					0.50%
$400 Million Senior Notes \| Senior Notes
Debt Instrument [Line Items]
Debt instrument, face amount		$ 400,000,000			$ 400,000,000		$ 400,000,000
Debt instrument stated interest rate		5.75%
Debt instrument effective interest rate		6.00%			6.00%		6.00%
$400 Million Senior Notes \| Senior Notes \| Debt Instrument Redemption
Debt Instrument [Line Items]
Debt instrument, percentage of principal amount to be redeemed		100.00%
$400 Million Senior Notes \| Senior Notes \| Debt Instrument Redemption \| Treasury Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate					0.50%
$250 Million Senior Notes \| Senior Notes
Debt Instrument [Line Items]
Debt instrument, face amount			$ 250,000,000		$ 250,000,000		$ 250,000,000
Debt instrument stated interest rate			5.70%
Debt instrument effective interest rate			6.19%		6.19%		6.19%
Senior notes, discount			$ 600,000
$250 Million Senior Notes \| Senior Notes \| Debt Instrument Redemption
Debt Instrument [Line Items]
Debt instrument, percentage of principal amount to be redeemed			100.00%
$250 Million Senior Notes \| Senior Notes \| Debt Instrument Redemption \| Treasury Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate					0.45%