BUSINESS, ORGANIZATION AND BASIS OF CONSOLIDATION - REIT - Additional Information (Detail)		3 Months Ended		9 Months Ended
	Sep. 30, 2019 USD ($) room state hotel $ / shares shares	Sep. 30, 2019 USD ($) room state hotel $ / shares shares	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($) room state hotel $ / shares shares	Sep. 30, 2018 USD ($)	Aug. 31, 2019 USD ($)	Dec. 31, 2018 room state hotel $ / shares shares
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Common stock, shares issued (in shares) | shares	184,501,128	184,501,128		184,501,128			188,219,605
Common stock, par value (in dollars per share) | $ / shares	$ 0.01	$ 0.01		$ 0.01			$ 0.01
Authorized amount increase						$ 150,000,000
Paired Share Repurchase Program
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Amount of stock repurchase plan authorized (up to)	$ 550,000,000	$ 550,000,000		$ 550,000,000
Paired shares repurchased and retired (in shares) | shares	21,300,000
Paired shares repurchased and retired, amount	$ 216,700,000
Remaining available shares for repurchase (in shares) | shares	205,300,000	205,300,000		205,300,000
U.S.
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Number of states in which the company owns hotels | state							40
Hotel properties | U.S.
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Number of hotel properties | hotel	554	554		554			554
Number of states in which the company owns hotels | state	40	40		40
Number of rooms | room	61,500	61,500		61,500			61,500
ESH REIT
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Common stock, shares issued (in shares) | shares	1	1		1
Common stock, par value (in dollars per share) | $ / shares	$ 0.01	$ 0.01		$ 0.01
Authorized amount increase						$ 150,000,000
Paired shares repurchased and retired, amount		$ 20,887,000	$ 4,242,000	$ 20,887,000	$ 28,979,000
ESH REIT | Paired Share Repurchase Program
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Amount of stock repurchase plan authorized (up to)	$ 550,000,000	$ 550,000,000		$ 550,000,000
Paired shares repurchased and retired (in shares) | shares	21,300,000
Paired shares repurchased and retired, amount	$ 128,400,000
ESH REIT | Hotel properties | U.S.
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Number of hotel properties | hotel	554	554		554			554
Number of states in which the company owns hotels	40	40		40			40
Number of rooms | room	61,500	61,500		61,500			61,500
ESH REIT | ESH REIT
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Approximate percentage of ownership of common stock (as a percent)	58.00%	58.00%		58.00%