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, Covenant, Leverage Ratio

+ References

No definition available.

+ Details

Name:	chh_DebtInstrumentCovenantLeverageRatio
Namespace Prefix:	chh_
Data Type:	xbrli:pureItemType
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:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- 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

Line Of Credit Facility, Extension Option, Term

+ References

No definition available.

+ Details

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

- 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

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:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1B
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611

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=124435984&loc=d3e28551-108399

Reference 3: 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 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=124429444&loc=SL124452920-239629

Reference 5: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 55
-Paragraph 69C
-URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495737-112612

Reference 6: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 55
-Paragraph 69B
-URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495735-112612

+ 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=123466204&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=124435984&loc=d3e28551-108399

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=124429444&loc=SL124452920-239629

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(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateEffectivePercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types: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:	dtr-types: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

Fair value amount of debt instrument that was repurchased.

+ References

No definition available.

+ Details

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

- Definition

Face (par) amount of the original debt instrument that was repurchased.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentRepurchasedFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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=124435984&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

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1D
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495340-112611

+ Details

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

- Definition

Amount, before 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 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=124435984&loc=d3e28555-108399

+ Details

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

- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=123467658&loc=d3e12355-112629

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=123467658&loc=d3e12317-112629

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585

+ Details

Name:	us-gaap_GainsLossesOnExtinguishmentOfDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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:	dtr-types: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

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 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ 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=123466204&loc=SL6031897-161870

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 55
-Paragraph 69C
-URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495737-112612

Reference 3: 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=120400017&loc=d3e572229-122910

Reference 4: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 55
-Paragraph 69B
-URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495735-112612

Reference 5: 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=120398452&loc=d3e534808-122878

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1D
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495340-112611

Reference 7: 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=120391452&loc=d3e13212-122682

+ Details

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

- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3255-108585

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(f))
-URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690

+ Details

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

- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585

+ Details

Name:	us-gaap_RepaymentsOfDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

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

- Details

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

- Details

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

- Details

Name:	us-gaap_CreditFacilityAxis=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_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_A600MillionUnsecuredCreditFacilityMember
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:	srt_RangeAxis=srt_MinimumMember
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_VariableRateAxis=us-gaap_BaseRateMember
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_LongtermDebtTypeAxis=us-gaap_SeniorNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=chh_A525MillionUnsecuredCreditFacilityDue2025Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=chh_A400MillionSeniorNote2029Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentRedemptionPeriodAxis=us-gaap_DebtInstrumentRedemptionPeriodThreeMember
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_A250MillionUnsecuredTermLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_DebtInstrumentAxis=chh_A450Million2031NotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentRedemptionPeriodAxis=us-gaap_DebtInstrumentRedemptionPeriodOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentRedemptionPeriodAxis=us-gaap_DebtInstrumentRedemptionPeriodTwoMember
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:

- Details

Name:	us-gaap_DebtInstrumentAxis=chh_A400MillionSeniorNotes2022Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Debt - Narratives (Details) - USD ($)										3 Months Ended	12 Months Ended
Debt - Narratives (Details) - USD ($)	Aug. 11, 2021	Aug. 12, 2020	Jul. 23, 2020	Apr. 16, 2020	Mar. 05, 2020	Nov. 27, 2019	Jul. 02, 2019	Aug. 23, 2012	Jun. 27, 2012	Sep. 30, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Aug. 28, 2020	Jul. 10, 2020	Jul. 09, 2020	Dec. 30, 2014	Apr. 30, 2013
Debt Instrument [Line Items]
Loss on extinguishment of debt										$ 16,000,000	$ 0	$ 16,565,000	$ 7,188,000
Total debt											$ 1,060,474,000	$ 1,058,738,000
2012 Special Cash Dividend \| 2012 Special Cash Dividend
Debt Instrument [Line Items]
Payments of special dividends								$ 600,700,000
Line of Credit \| Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit maximum borrowing capacity	$ 600,000,000	$ 600,000,000
Proceeds from lines of credit	540,000,000	525,000,000
Debt issuance cost	$ 400,000	$ 300,000
Construction Loan
Debt Instrument [Line Items]
Loss on extinguishment of debt					$ 600,000
Repayments of debt					$ 33,100,000
Collateralized Mortgage
Debt Instrument [Line Items]
Debt instrument stated interest rate																	7.26%
Total debt																	$ 9,500,000
Debt instrument, future balloon payment																	$ 6,900,000
Economic Development Loans
Debt Instrument [Line Items]
Debt instrument stated interest rate											3.00%
Debt instrument effective interest rate											3.00%	3.00%
Total debt											$ 4,416,000	$ 4,416,000
Economic development agreements - total advances agreed upon																		$ 4,400,000
Economic development agreements - term											10 years
$600 Million Senior Unsecured Credit Facility \| Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit maximum borrowing capacity											$ 600,000,000
Debt instrument, extension, term				1 year			1 year				1 year
Debt instrument additional borrowing capacity											$ 250,000,000
Total leverage ratio											2.5
$600 Million Senior Unsecured Credit Facility \| Revolving Credit Facility \| Minimum
Debt Instrument [Line Items]
Credit facility, commitment fee percentage											0.075%
Fixed charge coverage ratio (not less than)											2.5
$600 Million Senior Unsecured Credit Facility \| Revolving Credit Facility \| Minimum \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate											0.90%
$600 Million Senior Unsecured Credit Facility \| Revolving Credit Facility \| Minimum \| Base Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate											0.00%
$600 Million Senior Unsecured Credit Facility \| Revolving Credit Facility \| Maximum
Debt Instrument [Line Items]
Total leverage ratio											4.5
Credit facility, commitment fee percentage											0.25%
$600 Million Senior Unsecured Credit Facility \| Revolving Credit Facility \| Maximum \| Total Leverage Ratio exceeds 5.50 to 1.00
Debt Instrument [Line Items]
Total leverage ratio											5.5
$600 Million Senior Unsecured Credit Facility \| Revolving Credit Facility \| Maximum \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate											1.50%
$600 Million Senior Unsecured Credit Facility \| Revolving Credit Facility \| Maximum \| Base Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate											0.50%
$600 Million Senior Unsecured Credit Facility \| Revolving Credit Facility \| Alternative Currency Loans
Debt Instrument [Line Items]
Line of credit maximum borrowing capacity											$ 35,000,000
$600 Million Senior Unsecured Credit Facility \| Revolving Credit Facility \| Swingline Loans
Debt Instrument [Line Items]
Line of credit maximum borrowing capacity											25,000,000
$600 Million Senior Unsecured Credit Facility \| Senior Notes
Debt Instrument [Line Items]
Line of credit maximum borrowing capacity												600,000,000
Total debt											0	0
525 Million Unsecured Credit Facility Due 2025 \| Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument, extension, term		1 year
2019 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						3.70%
Senior notes, discount						$ 2,400,000
Debt instrument effective interest rate						3.88%					3.88%	3.88%
Total debt											$ 395,237,000	$ 394,635,000
2019 Senior Notes \| Senior Notes \| Change of control event
Debt Instrument [Line Items]
Debt instrument, percentage of principal amount to be redeemed						101.00%
2019 Senior Notes \| Senior Notes \| Debt Instrument Redemption
Debt Instrument [Line Items]
Debt instrument, percentage of principal amount to be redeemed						100.00%
2019 Senior Notes \| Senior Notes \| Treasury Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate						0.30%
$250 Million Unsecured Term Loan \| Unsecured Debt
Debt Instrument [Line Items]
Debt instrument, face amount				$ 250,000,000
$250 Million Unsecured Term Loan \| Unsecured Debt \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate				1.00%
$250 Million Unsecured Term Loan \| Unsecured Debt \| Minimum \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate				2.00%
$250 Million Unsecured Term Loan \| Unsecured Debt \| Minimum \| Base Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate				1.00%
$250 Million Unsecured Term Loan \| Unsecured Debt \| Maximum \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate				2.75%
$250 Million Unsecured Term Loan \| Unsecured Debt \| Maximum \| Base Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate				1.75%
2020 Senior Notes \| Senior Notes
Debt Instrument [Line Items]
Debt instrument, face amount			$ 450,000,000								$ 450,000,000
Debt instrument stated interest rate			3.70%
Debt instrument effective interest rate											3.86%
Total debt											$ 444,470,000	443,860,000
2020 Senior Notes \| Senior Notes \| Prior to October 15, 2030
Debt Instrument [Line Items]
Debt instrument, percentage of principal amount to be redeemed			100.00%
2020 Senior Notes \| Senior Notes \| Par Call date
Debt Instrument [Line Items]
Debt instrument, percentage of principal amount to be redeemed			100.00%
2020 Senior Notes \| Senior Notes \| Change of control event
Debt Instrument [Line Items]
Debt instrument, percentage of principal amount to be redeemed			101.00%
2020 Senior Notes \| Senior Notes \| 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
2012 Senior Notes
Debt Instrument [Line Items]
Total debt											216,400,000
2012 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%
Debt instrument, repurchased face amount			$ 183,400,000												$ 180,000,000	$ 160,000,000
Debt instrument, repurchase amount			$ 197,800,000
Total debt											$ 216,351,000	$ 215,827,000
2012 Senior Notes \| Senior Notes \| Change of control event
Debt Instrument [Line Items]
Debt instrument, percentage of principal amount to be redeemed									101.00%
2012 Senior Notes \| Senior Notes \| Debt Instrument Redemption
Debt Instrument [Line Items]
Debt instrument, percentage of principal amount to be redeemed									100.00%
2012 Senior Notes \| Senior Notes \| Treasury Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate									0.50%