Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Summary Of Significant Accounting Policies [Line Items]
Total assets of Company's joint ventures	$ 85,000,000	$ 103,900,000
Total liabilities of Company's joint ventures	130,600,000	125,400,000
Cash equivalents, original maturities	less than 90 days
Impairment loss	0	0	143,674,000
Capitalized interest expense	9,300,000	4,700,000	49,300,000
Capitalized internal costs	32,600,000	24,200,000	20,300,000
Impairment loss, intangible assets	0	0	0
Taxes on gaming revenue	4,650,000,000	4,540,000,000	3,530,000,000
Advertising costs	140,400,000	117,800,000	97,800,000
Gain related to the dissolution of a wholly owned foreign subsidiary			6,600,000
Deferred tax assets, valuation allowance	2,484,653,000	1,519,268,000
Percentage on measuring uncertain tax position minimum	50.00%
U.S. Deferred Tax Asset [Member]
Summary Of Significant Accounting Policies [Line Items]
Deferred tax assets, valuation allowance	2,270,000,000	1,300,000,000
Cotai Strip Parcels 7 and 8 [Member]
Summary Of Significant Accounting Policies [Line Items]
Impairment loss			100,700,000
Sands Bethlehem [Member] | Gaming License [Member]
Summary Of Significant Accounting Policies [Line Items]
Indefinite lived assets	50,000,000
Sands Bethlehem [Member] | Table Games Certificate [Member]
Summary Of Significant Accounting Policies [Line Items]
Indefinite lived assets	16,500,000
ZAiA [Member] | The Venetian Macao [Member]
Summary Of Significant Accounting Policies [Line Items]
Impairment loss			$ 42,900,000