Net Income Per Share - REIT - Calculations of Basic and Diluted Net Income Per Share, Including a Reconciliation of Numerators and Denominators (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Numerator:
NET INCOME	$ 23,846	$ 53,230	$ 59,658	$ 28,404	$ 39,399	$ 75,692	$ 65,570	$ 31,095	$ 165,138	$ 211,756	$ 172,188
Net Income (Loss) Available to Common Stockholders, Basic	$ (46,834)	$ 41,071	$ 53,497	$ 21,934	$ (38,946)	$ 71,902	$ 65,056	$ 14,852	69,668	112,864	78,847
Dilutive Securities, Effect on Basic Earnings Per Share									(82)	(128)	(392)
Net income available to Extended Stay America, Inc. common shareholders - diluted									$ 69,586	$ 112,736	$ 78,455
Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract]
Basic (in shares)									186,546	189,389	193,101
Dilutive securities (in shares)									276	432	569
Weighted-average number of common shares outstanding - diluted (in shares)									186,822	189,821	193,670
Basic (in dollars per share)	$ (0.26)	$ 0.22	$ 0.28	$ 0.12	$ (0.21)	$ 0.38	$ 0.34	$ 0.08	$ 0.37	$ 0.60	$ 0.41
Diluted (in dollars per share)	$ (0.26)	$ 0.22	$ 0.28	$ 0.12	$ (0.21)	$ 0.38	$ 0.34	$ 0.08	$ 0.37	$ 0.59	$ 0.41
Anti-dilutive securities excluded from net income per common share - Class B - diluted (in shares)	300				400
ESH Hospitality, Inc.
Numerator:
NET INCOME	$ 168,005	$ 28,467	$ 14,349	$ 15,066	$ 182,537	$ 8,821	$ 1,190	$ 37,581	$ 225,887	$ 230,129	$ 214,984
Less preferred dividends									(16)	(16)	(16)
Net Income (Loss) Available to Common Stockholders, Basic									225,871	230,113	214,968
ESH Hospitality, Inc. | Common Class A
Numerator:
Net Income (Loss) Available to Common Stockholders, Basic									129,460	131,039	121,627
Dilutive Securities, Effect on Basic Earnings Per Share									(82)	(128)	(392)
Net income available to Extended Stay America, Inc. common shareholders - diluted									$ 129,378	$ 130,911	$ 121,235
Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract]
Weighted average number of common shares outstanding - basic and diluted (in shares)									250,494	250,494	250,494
Weighted-average number of common shares outstanding - diluted (in shares)									250,494	250,494	250,494
Basic (in dollars per share)	$ 0.39	$ 0.07	$ 0.03	$ 0.03	$ 0.42	$ 0.02	$ 0	$ 0.08	$ 0.52	$ 0.52	$ 0.49
Diluted (in dollars per share)	0.39	0.07	0.03	0.03	0.42	0.02	0	0.08	$ 0.52	$ 0.52	$ 0.48
ESH Hospitality, Inc. | Common Class B
Numerator:
Net Income (Loss) Available to Common Stockholders, Basic									$ 96,411	$ 99,074	$ 93,341
Dilutive Securities, Effect on Basic Earnings Per Share									82	128	0
Net income available to Extended Stay America, Inc. common shareholders - diluted									$ 96,493	$ 99,202	$ 93,341
Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract]
Basic (in shares)									186,546	189,389	193,101
Dilutive securities (in shares)									276	432	0
Weighted-average number of common shares outstanding - diluted (in shares)									186,822	189,821	193,101
Basic (in dollars per share)	0.39	0.07	0.03	0.03	0.42	0.02	0	0.08	$ 0.52	$ 0.52	$ 0.48
Diluted (in dollars per share)	$ 0.39	$ 0.07	$ 0.03	$ 0.03	$ 0.42	$ 0.02	$ 0	$ 0.08	$ 0.52	$ 0.52	$ 0.48
Anti-dilutive securities excluded from net income per common share - Class B - diluted (in shares)									0	0	569