Equity and Capital - Common Stock (Details) - USD ($)			3 Months Ended			6 Months Ended
	May 05, 2021	Feb. 03, 2021	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Class of Stock [Line Items]
Common stock dividend declared, per share	$ 0.595		$ 0.595		$ 0.595	$ 1.190	$ 1.190
Common stock, dividends payable date	Oct. 05, 2021
Common stock, dividends record date	Sep. 15, 2021
Common stock, dividends declared date	Aug. 04, 2021
Net proceeds from common stock issuance							$ 125,616,000
Common stock remaining available for Issuance			350,400,000			350,400,000
Stock Repurchase Program, Authorized Amount		$ 250,000,000
Stock Repurchase Program Expiration Date		Feb. 03, 2023
Common Stock [Member] | AOCI Attributable to Parent
Class of Stock [Line Items]
Stock Repurchased and Retired During Period, Value				$ 0
ATM Equity Offering Program [Member] | Forward Equity Offering [Member]
Class of Stock [Line Items]
Number of shares issuable						2,316,760
Sale of stock, average offering price			$ 64.59			$ 64.59
Settlement period						1 year
Net proceeds from common stock issuance						$ 149,600,000
ATM Equity Offering Program [Member] | Forward Equity Offering [Member] | Parent Company [Member]
Class of Stock [Line Items]
Number of shares settled						0
Maximum [Member]
Class of Stock [Line Items]
Equity Issuances, Common Shares Authorized for Issuance			500,000,000			500,000,000