Share-Based Payments and Employee Benefits (Tables)

12 Months Ended

Dec. 31, 2022

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of RSU activity

	Time-Based RSUs			Performance-Based RSUs
		Weighted			Weighted
	Unvested	Average Grant-		Unvested	Average Grant-
	Shares	Date Fair Value		Shares	Date Fair Value
Unvested as of December 31, 2021	21,578	$	31.50	13,516	$	15.16
Granted	39,536		29.36	—		—
Vested	(8,834)		30.67	—		—
Forfeited	(3,766)		29.82	—		—
Unvested as of December 31, 2022	48,514		30.04	13,516		15.16

Summary of share-based compensation expense

	Year Ended December 31,
	2022		2021		2020
	(In thousands)
Time-Based LTIP Units	$	19,378	$	16,705	$	14,018
AO LTIP Units and Performance-Based LTIP Units		12,615		13,101		17,815
LTIP Units		1,000		1,091		1,100
Other equity awards (1)		6,610		7,355		6,024
Share-based compensation expense - other		39,603		38,252		38,957
Formation Awards		1,747		2,874		4,242
OP Units and LTIP Units (2)		409		7,927		21,836
Special Time-Based LTIP Units and Special Performance-Based LTIP Units (3)		3,235		5,524		5,600
Share-based compensation related to Formation Transaction and special equity awards (4)		5,391		16,325		31,678
Total share-based compensation expense		44,994		54,577		70,635
Less: amount capitalized		(3,722)		(3,026)		(4,584)
Share-based compensation expense	$	41,272	$	51,551	$	66,051

(1) Primarily comprising compensation expense for: (i) fully vested LTIP Units issued to certain employees in lieu of all or a portion of any cash bonuses earned, (ii) RSUs and (iii) shares issued under our ESPP.

(2) Includes share-based compensation expense for LTIP Units and OP Units issued in the Formation Transaction, which fully vested in July 2022.

(3) Represents equity awards issued related to our successful pursuit of Amazon's additional headquarters in National Landing.

(4) Included in "General and administrative expense: Share-based compensation related to Formation Transaction and special equity awards" in the accompanying consolidated statements of operations.

Performance LTIP Units

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Summary of of the significant assumptions of awards

		Year Ended December 31,
	2022	2021	2020
Expected volatility	28.0%	31.0% to 34.0%	15.0%
Dividend yield	2.7%	2.6%	2.3%
Risk-free interest rate	1.5%	0.2% to 1.0%	1.3%

Summary of activity

		Weighted
	Unvested	Average Grant-
	Shares	Date Fair Value
Unvested as of December 31, 2021	2,776,242	$	19.21
Granted	21,705		17.68
Vested	(244,366)		17.04
Forfeited / cancelled	(595,833)		19.66
Unvested as of December 31, 2022 (1)	1,957,748		19.33

ESPP

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Summary of of the significant assumptions of awards

	Year Ended December 31,
	2022	2021	2020
Expected volatility	23.0% to 30.0%	22.0% to 39.0%	13.0% to 67.0%
Dividend yield	1.6% to 4.1%	1.5% to 3.1%	1.1% to 3.3%
Risk-free interest rate	0.2% to 2.4%	0.1%	0.1% to 1.7%
Expected life	6 months	6 months	6 months

OP Units [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Summary of activity

		Weighted
	Unvested	Average Grant-
	Shares	Date Fair Value
Unvested as of December 31, 2021	441,098	$	33.39
Vested	(441,098)		33.39
Unvested as of December 31, 2022	—		—

LTIP, Time-Based LTIP and Special Time-Based LTIP Units

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Summary of of the significant assumptions of awards

	Year Ended December 31,
	2022	2021	2020
Expected volatility	30.0% to 41.0%	34.0% to 39.0%	18.0% to 29.0%
Risk-free interest rate	0.4% to 2.9%	0.1% to 0.4%	0.3% to 1.5%
Post-grant restriction periods	2 to 6 years	2 to 3 years	2 to 3 years

Summary of activity

		Weighted
	Unvested	Average Grant-
	Shares	Date Fair Value
Unvested as of December 31, 2021	1,906,814	$	33.10
Granted	1,008,075		25.49
Vested	(928,019)		29.32
Forfeited	(159,307)		30.86
Unvested as of December 31, 2022	1,827,563		31.01

AO LTIP Units [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Summary of of the significant assumptions of awards

Expected volatility	27.0%
Dividend yield	2.7%
Risk-free interest rate	1.6%

Summary of activity

		Weighted
	Unvested	Average Grant-
	Shares	Date Fair Value
Unvested as of December 31, 2021	—	$	—
Granted	1,491,165		4.44
Forfeited / cancelled	(9,572)		4.44
Unvested as of December 31, 2022	1,481,593		4.44

Formation Awards [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Summary of activity

		Weighted
	Unvested	Average Grant-
	Shares	Date Fair Value
Unvested as of December 31, 2021	1,007,513	$	8.80
Vested	(1,005,426)		8.81
Forfeited	(2,087)		8.60
Unvested as of December 31, 2022	—		—