[Line Items] for Numerical disclosures within the significant accounting policies footnote disclosure.

No definition available.

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- Definition

Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

+ References

No definition available.

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Amount of cumulative effect of the change in accounting principle or new accounting pronouncement on retained earnings or other components of equity or net assets in the statement of financial position as of the beginning of the earliest period presented.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(3)
-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22499-107794

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22583-107794

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22580-107794

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- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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- Definition

Description of award terms as to how many shares or portion of an award are no longer contingent on satisfaction of either a service condition, market condition or a performance condition, thereby giving the employee the legal right to convert the award to shares, to sell the shares, and be entitled to the cash proceeds of such sale. For example, vesting may be expressed as being 25 percent of the shares under option on each anniversary of the grant date.

+ References

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- Definition

Percentage of vesting of share-based compensation awards.

+ References

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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- Definition

Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 5A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=108788376&loc=SL6759159-111685

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Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Jan. 01, 2019	Dec. 31, 2016	Jan. 01, 2016
Accounting Policies [Line Items]
Ownership percentage of voting shares of a company at or above which VIEs are consolidated	50.00%
Accounting standards update 2014-09
Accounting Policies [Line Items]
Cumulative effect of the adoption of ASU			$ 212	$ 212
Accounting standards update 2018-02
Accounting Policies [Line Items]
Cumulative effect of the adoption of ASU	$ 0
Stock options [member]
Accounting Policies [Line Items]
Vesting period	3 years
Expiration period, options	10 years
Performance shares [member]
Accounting Policies [Line Items]
Vesting period	3 years
Vesting rights	zero percent to 200 percent
EBITDA CAGR [member]
Accounting Policies [Line Items]
Vesting rights, percentage	50.00%
Free cash flow CAGR [member]
Accounting Policies [Line Items]
Vesting rights, percentage	50.00%
Minimum [member] \| Restricted stock units (RSUs) [member]
Accounting Policies [Line Items]
Vesting period	2 years
Minimum [member] \| Building and building improvements [member]
Accounting Policies [Line Items]
Useful life	8 years
Minimum [member] \| Furniture and equipment [member]
Accounting Policies [Line Items]
Useful life	3 years
Minimum [member] \| Computer equipment [member]
Accounting Policies [Line Items]
Useful life	3 years
Maximum [member] \| Restricted stock units (RSUs) [member]
Accounting Policies [Line Items]
Vesting period	3 years
Maximum [member] \| Building and building improvements [member]
Accounting Policies [Line Items]
Useful life	40 years
Maximum [member] \| Furniture and equipment [member]
Accounting Policies [Line Items]
Useful life	8 years
Maximum [member] \| Computer equipment [member]
Accounting Policies [Line Items]
Useful life	5 years
Management contracts [member] \| Minimum [member]
Accounting Policies [Line Items]
Useful life, intangibles	13 years
Management contracts [member] \| Maximum [member]
Accounting Policies [Line Items]
Useful life, intangibles	16 years
Management contract acquisition costs [member] \| Minimum [member]
Accounting Policies [Line Items]
Useful life, intangibles	20 years
Management contract acquisition costs [member] \| Maximum [member]
Accounting Policies [Line Items]
Useful life, intangibles	30 years
Franchise contracts [member] \| Minimum [member]
Accounting Policies [Line Items]
Useful life, intangibles	12 years
Franchise contracts [member] \| Maximum [member]
Accounting Policies [Line Items]
Useful life, intangibles	13 years
Franchise contract acquisition costs [member] \| Minimum [member]
Accounting Policies [Line Items]
Useful life, intangibles	10 years
Franchise contract acquisition costs [member] \| Maximum [member]
Accounting Policies [Line Items]
Useful life, intangibles	20 years
Leases [member] \| Minimum [member]
Accounting Policies [Line Items]
Useful life, intangibles	12 years
Leases [member] \| Maximum [member]
Accounting Policies [Line Items]
Useful life, intangibles	35 years
Hilton Honors intangible [member]
Accounting Policies [Line Items]
Useful life, intangibles	16 years
Capitalized software [member]
Accounting Policies [Line Items]
Useful life, intangibles	3 years
Accumulated other comprehensive loss \| Accounting standards update 2018-02
Accounting Policies [Line Items]
Cumulative effect of the adoption of ASU	$ 16
Assets [member] \| Minimum [member] \| Accounting standards update 2016-02
Accounting Policies [Line Items]
Estimated effect of adoption of ASU		$ 900
Assets [member] \| Maximum [member] \| Accounting standards update 2016-02
Accounting Policies [Line Items]
Estimated effect of adoption of ASU		1,100
Liability [member] \| Minimum [member] \| Accounting standards update 2016-02
Accounting Policies [Line Items]
Estimated effect of adoption of ASU		1,200
Liability [member] \| Maximum [member] \| Accounting standards update 2016-02
Accounting Policies [Line Items]
Estimated effect of adoption of ASU		$ 1,400