Stock-Based Employee Compensation - Black-Scholes Option-Pricing Model Weighted Average Assumptions (Details)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
LVSC 2004 Plan [Member]
Black-Scholes option-pricing model, weighted average assumptions
Weighted average volatility	25.80%	26.70%	33.50%
Expected term (in years)	6 years 8 months 12 days	5 years 1 month	5 years 7 months
Risk-free rate	2.90%	1.90%	1.40%
Expected dividend yield	5.70%	4.70%	5.70%
SCL Equity Plan [Member]
Black-Scholes option-pricing model, weighted average assumptions
Weighted average volatility	36.00%	36.90%	40.80%
Expected term (in years)	4 years 8 months 12 days	4 years 5 months	4 years 5 months
Risk-free rate	1.70%	1.30%	1.20%
Expected dividend yield	5.80%	6.60%	5.50%