Stockholders' Equity / Partners' Capital - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	May 31, 2018
ATM Equity Program
Class Of Stock [Line Items]
ATM equity program, aggregate offering price authorized (up to $500 million)	$ 500.0	$ 500.0
At The Market Program Expired May 2018, Included In ATM Equity Program
Class Of Stock [Line Items]
ATM equity program, aggregate offering price authorized (up to $500 million)		$ 233.0
Deferred Compensation Plan
Class Of Stock [Line Items]
Shares held in deferred compensation plan (in shares)	77,928
Deferred Compensation Plan | Treasury Stock
Class Of Stock [Line Items]
Shares of common stock deposited into deferred compensation plan (in shares)	15,670
Number of shares withdrawn from deferred compensation plan (in shares)	7,345