Consolidated Variable Interest Entities ("VIEs") and Investments in Affiliates - Schedule of Investments in Affiliates (Parenthetical) (Detail) - USD ($) $ in Millions	1 Months Ended	9 Months Ended
Jul. 31, 2019	Sep. 30, 2019	Dec. 31, 2018
Schedule Of Equity Method Investments [Line Items]
Investments in affiliates		$ 52	$ 50
Conrad Dublin [Member]
Schedule Of Equity Method Investments [Line Items]
Gross sales price	$ 127
Pro-rata share, gross sales price	$ 61
Pro-rata share, debt		9
Investments in affiliates		$ 7	$ 7

Disposal group including discontinued operation pro rata share of debt.

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- Definition

Disposal Group, including discontinued operation, pro-rata share of sales price.

+ References

No definition available.

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- Definition

Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.

+ References

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- Definition

Amount of investment in equity method investee and investment in and advance to affiliate.

+ 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 210.5-02.12)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- 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.

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