Net Income Per Common Share and Net Income Per Common Unit (Tables)

9 Months Ended

Sep. 30, 2018

Net Income Per Share and Net Income Per Unit [Line Items]

Schedule of net income per common share

Essex Property Trust, Inc.

	Three Months Ended September 30, 2018					Three Months Ended September 30, 2017
	Income		Weighted- average Common Shares	Per Common Share Amount		Income		Weighted- average Common Shares	Per Common Share Amount
Basic:
Net income available to common stockholders	$	80,975	66,052,108	$	1.23	$	79,723	65,994,896	$	1.21
Effect of Dilutive Securities:
Stock options	—		51,704			—		83,387
Diluted:
Net income available to common stockholders	$	80,975	66,103,812	$	1.22	$	79,723	66,078,283	$	1.21

	Nine Months Ended September 30, 2018					Nine Months Ended September 30, 2017
	Income		Weighted- average Common Shares	Per Common Share Amount		Income		Weighted- average Common Shares	Per Common Share Amount
Basic:
Net income available to common stockholders	$	272,333	66,047,990	$	4.12	$	329,446	65,759,450	$	5.01
Effect of Dilutive Securities:
Stock options	—		45,014			—		77,515
Diluted:
Net income available to common stockholders	$	272,333	66,093,004	$	4.12	$	329,446	65,836,965	$	5.00

Essex Portfolio, L.P. [Member]

Net Income Per Share and Net Income Per Unit [Line Items]

Schedule of net income per common share

Essex Portfolio, L.P.

	Three Months Ended September 30, 2018					Three Months Ended September 30, 2017
	Income		Weighted- average Common Units	Per Common Unit Amount		Income		Weighted- average Common Units	Per Common Unit Amount
Basic:
Net income available to common unitholders	$	83,764	68,325,091	$	1.23	$	82,444	68,246,008	$	1.21
Effect of Dilutive Securities:
Stock options	—		51,704			—		83,387
Diluted:
Net income available to common unitholders	$	83,764	68,376,795	$	1.23	$	82,444	68,329,395	$	1.21

	Nine Months Ended September 30, 2018					Nine Months Ended September 30, 2017
	Income		Weighted- average Common Units	Per Common Unit Amount		Income		Weighted- average Common Units	Per Common Unit Amount
Basic:
Net income available to common unitholders	$	281,714	68,321,153	$	4.12	$	340,735	68,011,123	$	5.01
Effect of Dilutive Securities:
Stock options	—		45,014			—		77,515
Diluted:
Net income available to common unitholders	$	281,714	68,366,167	$	4.12	$	340,735	68,088,638	$	5.00