Stock-Based Employee Compensation - Stock-Based Compensation Activity (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	10 Months Ended	12 Months Ended
Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based compensation expense		$ 48,058	$ 53,377	$ 65,428
Income tax benefit recognized in the consolidated statements of operations		6,743	0	0
Compensation cost capitalized as part of property and equipment		1,437	941	938
LVSC 2004 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options exercised, intrinsic value		105,386	129,149	84,761
Stock options exercised, cash received		44,973	50,223	34,668
Stock options exercised, tax benefit realized for tax deductions from stock-based compensation		0	0	0
SCL Equity Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options exercised, intrinsic value		19,282	25,786	12,261
Stock options exercised, cash received		10,677	19,373	11,572
Stock options exercised, tax benefit realized for tax deductions from stock-based compensation		0	0	0
Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based compensation expense		24,964	32,549	35,777
Stock Option [Member] \| LVSC 2004 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options granted		2,359,455	288,000	537,000
Stock options granted, weighted average grant date fair value		$ 20.25	$ 35.76	$ 36.17
Stock Option [Member] \| SCL Equity Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options granted	11,660,500	11,660,500	4,537,000	7,762,000
Stock options granted, weighted average grant date fair value		$ 3.40	$ 2.63	$ 1.65
Restricted Stock and Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based compensation expense		$ 23,094	$ 20,828	$ 29,651
Restricted Stock [Member] \| LVSC 2004 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock and stock units granted		31,137	47,000	517,000
Restricted stock and stock units granted, weighted average grant date fair value		$ 75.46	$ 54.72	$ 52.97
Restricted Stock Units (RSUs) [Member] \| LVSC 2004 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock and stock units granted		9,984	123,000	333,000
Restricted stock and stock units granted, weighted average grant date fair value		$ 68.30	$ 58.82	$ 25.98
Restricted Stock Units (RSUs) [Member] \| SCL Equity Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock and stock units granted		362,800	2,608,000
Restricted stock and stock units granted, weighted average grant date fair value		$ 6.81	$ 6.64

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Represents the compensation cost capitalized during the period arising from equity-based compensation arrangements (for example, shares of stock, units, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Aggregate proceeds received by the entity during the annual period from exercises of stock or unit options and conversion of similar instruments granted under equity-based payment arrangements.

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The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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Disclosure of the aggregate tax benefit realized from the exercise of stock options and the conversion of similar instruments during the annual period.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Net number of share options (or share units) granted during the period.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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