Stockholders' Equity of the Company (Details) - USD ($)			3 Months Ended		6 Months Ended
	Mar. 25, 2020	Feb. 18, 2020	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2020	Jun. 30, 2019	May 19, 2020	May 18, 2020	Dec. 31, 2019	Jun. 30, 2018
Class of Stock [Line Items]
Common stock, shares authorized (in shares)			280,000,000		280,000,000		280,000,000	150,000,000	150,000,000
Forward equity offering, numbers of shares authorized (in shares)		5,750,000
Forward equity offering, value of shares offered		$ 494,500,000
Forward equity offering price per share (in dollars per share)		$ 86.00
At the market stock offering aggregate gross sales price of common stock										$ 500,000,000.0
Common stock, shares issued (in shares)			115,176,538		115,176,538				106,016,287
Proceeds from issuance of stock					$ 721,749,000	$ 0
Forward equity sale [Member]
Class of Stock [Line Items]
Proceeds from issuance of stock	$ 474,900,000				$ 247,300,000
Common Stock [Member] | Forward equity sale [Member]
Class of Stock [Line Items]
Common stock, shares issued (in shares)			3,594,576		3,594,576
At the market stock offering remaining amount available for issuance			$ 214,200,000		$ 214,200,000
2018 At-The-Market Program [Member] | Common Stock [Member] | Forward equity sale [Member]
Class of Stock [Line Items]
Sale of stock, shares available for sale (in shares)									3,147,110
Price per share (in dollars per share)									$ 80.08
Common Stock [Member]
Class of Stock [Line Items]
Issuance of common stock (in shares)			0	8,897,110
Common Stock [Member] | Forward equity sale [Member]
Class of Stock [Line Items]
Issuance of common stock (in shares)					3,147,110
Price per share (in dollars per share)			$ 80.08		$ 80.08
Number of shares issued (in shares)	5,750,000
Proceeds from issuance of stock					$ 252,000,000.0
Aggregate net proceeds after selling commissions					$ 247,300,000