Fair Value Measurements - Fair Value of Debt and Hierarchy Level Used to Estimate Fair Values (Detail) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Carrying amount [Member] | SF CMBS Loan [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loan	$ 725	$ 725
Carrying amount [Member] | HHV CMBS Loan [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loan	1,275	1,275
Carrying amount [Member] | 2016 Term Loan [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loan	700	700
Carrying amount [Member] | 2019 Term Facility [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loan	670	670
Carrying amount [Member] | Revolver [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loan	1,000
Carrying amount [Member] | Mortgage Loans [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loan	514	516
Fair Value [Member] | SF CMBS Loan [Member] | Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loan	681	740
Fair Value [Member] | HHV CMBS Loan [Member] | Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loan	1,121	1,316
Fair Value [Member] | 2016 Term Loan [Member] | Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loan	630	698
Fair Value [Member] | 2019 Term Facility [Member] | Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loan	610	667
Fair Value [Member] | Revolver [Member] | Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loan	1,000
Fair Value [Member] | Mortgage Loans [Member] | Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loan	$ 461	$ 516