Line of credit facility additional borrowing capacity.

No definition available.

Name:	pk_LineOfCreditFacilityAdditionalBorrowingCapacity
Namespace Prefix:	pk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line of credit facility number of extension options.

+ References

No definition available.

+ Details

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Namespace Prefix:	pk_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Line of credit facility term of extension options period.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Number of consolidated variable interest entities.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
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-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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

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

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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+ Details

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Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Description of the maturity date of the debt instrument including whether the debt matures serially and, if so, a brief description of the serial maturities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Balance Type:	na
Period Type:	duration

- Definition

Amount, before accumulated amortization, of debt issuance costs related to line of credit arrangements. 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
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-Topic 835
-SubTopic 30
-Section S45
-Paragraph 1
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Fixed interest rate related to the interest rate derivative.

+ References

No definition available.

+ Details

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

- Definition

Date the derivative contract matures, in CCYY-MM-DD format.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of the fee for available but unused credit capacity under the credit facility.

+ References

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

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

- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of increase (decrease) of the credit facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Paragraph 1
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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
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-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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

- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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+ Details

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

- Definition

Amount of cash restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

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Balance Type:
Period Type:

- Details

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

- Details

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

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=pk_WellsFargoBankMember
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Balance Type:
Period Type:

- Details

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- Details

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Debt - Additional Information (Detail) $ in Millions			1 Months Ended			12 Months Ended
Debt - Additional Information (Detail) $ in Millions	Dec. 31, 2019 USD ($) Entity	Sep. 18, 2019 USD ($)	Dec. 31, 2019 USD ($) Entity	Aug. 31, 2019 USD ($)	Dec. 31, 2016 USD ($) Option	Dec. 31, 2019 USD ($) Entity	Dec. 31, 2018 USD ($)	Oct. 31, 2016 USD ($)
Debt Instrument [Line Items]
Number of consolidated VIEs \| Entity	3		3			3
Restricted cash	$ 40		$ 40			$ 40	$ 15
Letters of credit outstanding, amount					$ 50
Derivative fixed interest rate	1.86%		1.86%			1.86%
Derivative maturity date						Apr. 21, 2022
Derivative notional amount	$ 225		$ 225			$ 225
Maximum [Member]
Debt Instrument [Line Items]
Unused facility fee on the revolver					0.30%
Minimum [Member]
Debt Instrument [Line Items]
Unused facility fee on the revolver					0.20%
Revolver [Member]
Debt Instrument [Line Items]
Amount available for borrowing	1,000		1,000			1,000
2019 Term Facility [Member]
Debt Instrument [Line Items]
Debt, gross	670		670			$ 670
Aggregate commitment or principal amount not exceed		$ 100
Repayments of long-term debt	180
Letters of credit outstanding, amount		$ 850		$ 950
Unused facility fee on the revolver						0.25%
Term loan facility, maturity date				Aug. 31, 2024
Upfront financing fees	9		9			$ 9
Upfront financing fees expensed in connection with terminated commitments						$ 3
2019 Term Facility [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Term loan facility, additional borrowing capacity				$ 400
Wells Fargo Bank [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Aggregate commitment or principal amount not exceed					$ 500
Wells Fargo Bank [Member] \| Revolver [Member]
Debt Instrument [Line Items]
Amount available for borrowing					$ 1,000
Scheduled maturity date					Dec. 24, 2020
Number of extension options \| Option					2
Term of extension options period					6 months
Maturity date, description						The facility includes a $1 billion revolving credit facility (“Revolver”), which has a scheduled maturity date of December 24, 2020 with two, six-month extension options if certain conditions are satisfied, and a $750 million term loan (“2016 Term Loan”).
SF CMBS Loan [Member]
Debt Instrument [Line Items]
Debt, gross	725		725			$ 725	725	$ 725
HHV CMBS Loan [Member]
Debt Instrument [Line Items]
Debt, gross	1,275		1,275			1,275	1,275	$ 1,275
CMBS and mortgage loans [Member]
Debt Instrument [Line Items]
Restricted cash	13		13			13	15
2016 Term Loan [Member]
Debt Instrument [Line Items]
Debt, gross	$ 700		700			$ 700	$ 750
2016 Term Loan [Member] \| Wells Fargo Bank [Member]
Debt Instrument [Line Items]
Debt, gross					$ 750
Repayments of long-term debt			$ 50