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Organization and Business of Company (Details) $ in Millions, $ in Millions	1 Months Ended
	Jun. 30, 2018 USD ($) Room	Mar. 31, 2018 USD ($)	Mar. 31, 2017	Mar. 31, 2018 SGD ($)	Mar. 08, 2018 USD ($)	Dec. 31, 2017 USD ($)	Jun. 30, 2017 USD ($)	Dec. 31, 2016 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Total assets in Company's joint ventures	$ 76					$ 77
Total liabilities in Company's joint ventures	211					198
Cash, cash equivalents and restricted cash	4,362					2,430	$ 2,317	$ 2,138
Singapore [Member] \| 2012 Singapore Credit Facility [Member] \| Secured Debt [Member]
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Debt instrument, face amount		$ 3,510		$ 4,800
Debt instrument, maximum leverage ratio, through maturity		4.0		4.0
Singapore [Member] \| 2012 Singapore Credit Facility Term [Member] \| Secured Debt [Member]
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Debt instrument, maturity date		Mar. 29, 2024
Singapore [Member] \| 2012 Singapore Credit Facility Revolving [Member] \| Secured Debt [Member]
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Line of credit facility, expiration date		Sep. 29, 2023
United States [Member] \| 2013 US Credit Facility Extended Term B [Member] \| Secured Debt [Member]
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Debt instrument, face amount	$ 3,510	$ 2,160
Debt instrument, maturity date	Mar. 27, 2025	Mar. 27, 2025	Mar. 29, 2024
United States [Member] \| 2013 US Credit Facility Extended Term B (Increase) [Member] \| Secured Debt [Member]
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Debt instrument, face amount	$ 1,350
Sands Bethlehem [Member] \| United States [Member]
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Amount of consideration for sale of property					$ 1,300
Sands Cotai Central [Member] \| Macao [Member]
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Additional number of suites to be constructed \| Room	370
The Plaza Macao and Four Seasons Hotel Macao [Member] \| Macao [Member]
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Additional number of suites to be constructed \| Room	280
Intercompany [Member]
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Total liabilities in Company's joint ventures	$ 209					$ 196
Las Vegas Sands Corp. [Member] \| Sands China Ltd [Member] \| Macao [Member]
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Ownership interest in Sands China Ltd., percentage	70.00%