Stock-Based Compensation and Equity - Narratives (Details) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended
	Jun. 22, 2020 USD ($) $ / shares shares	Sep. 30, 2020 USD ($) $ / shares shares	Sep. 30, 2019 USD ($) $ / shares shares	Sep. 30, 2020 USD ($) multiplier $ / shares shares	Sep. 30, 2019 USD ($) $ / shares shares	Jun. 17, 2020 $ / shares shares	Dec. 31, 2019 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award
Stock-based compensation expense		$ 4,600	$ 4,700	$ 10,143	$ 13,848
Fair value of vested stock				23,700
Deferred compensation obligation		$ 42,014		$ 42,014			$ 37,263
Proceed from issuance of stock			$ 131,473		523,377
Common stock, shares authorized (shares) | shares		450,000,000		450,000,000			450,000,000
Proceeds from shares issued under forward sale agreements, net of selling costs				$ 199,716	$ 0
Distributions Declared
Dividends declared per share (in dollars per share) | $ / shares		$ 1.044	$ 1.036	$ 3.126	$ 3.102
Common Stock
Share-based Compensation Arrangement by Share-based Payment Award
Shares issued (shares) | shares			1,502,572		6,672,412
Proceed from issuance of stock			$ 1		$ 6
ATM Program
Share-based Compensation Arrangement by Share-based Payment Award
Common stock maximum offering value		$ 616,600		$ 616,600
ATM Program | Common Stock
Share-based Compensation Arrangement by Share-based Payment Award
Shares issued (shares) | shares		0	1,502,572	0	6,672,412
Weighted average share price (usd per share) | $ / shares			$ 88.76		$ 79.70
Proceed from issuance of stock			$ 131,400		$ 523,500
Underwriting Agreement
Share-based Compensation Arrangement by Share-based Payment Award
Shares issued (shares) | shares		1,488,291		2,951,791
Common stock, shares authorized (shares) | shares	5,462,500					4,750,000
Forward sales price (usd per share) | $ / shares						$ 68.35
Share purchase option (shares) | shares						712,500
Gross offering price (usd per share) | $ / shares	$ 70.00
Proceeds from shares issued under forward sale agreements, net of selling costs		$ 99,800		$ 199,700
Remaining shares authorized for distribution (shares) | shares		2,510,709		2,510,709
Underwriting Agreement | Underwriter
Share-based Compensation Arrangement by Share-based Payment Award
Proceeds from shares issued under forward sale agreements, net of selling costs	$ 382,400
Long Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award
Fair value assumptions expected dividend rate (percent)				0.00%
Deferred compensation arrangement with individual, common stock reserved for future issuance (shares) | shares		986,859		986,859			893,713
Deferred compensation obligation		$ 42,000		$ 42,000			$ 37,300
Unrecognized stock based compensation expense		$ 23,200		$ 23,200
Weighted-average remaining term				1 year 9 months 18 days
Long Term Incentive Plan | Minimum
Share-based Compensation Arrangement by Share-based Payment Award
Risk free interest rate (percent)				1.60%
Fair value assumptions expected volatility rate (percent)				15.20%
PSU Awards
Share-based Compensation Arrangement by Share-based Payment Award
Performance period (in years)				3 years
PSU Awards | Minimum
Share-based Compensation Arrangement by Share-based Payment Award
Potential performance return rate for stock awards | multiplier				0
PSU Awards | Maximum
Share-based Compensation Arrangement by Share-based Payment Award
Potential performance return rate for stock awards | multiplier				3