Equity - Dividends on Common Stock (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended												12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Equity [Abstract]
Dividends declared (usd per share)	$ 0.265	$ 0.265	$ 0.265	$ 0.265	$ 0.25	$ 0.25	$ 0.25	$ 0.25	$ 0.225	$ 0.225	$ 0.225	$ 0.225	$ 1.06	$ 1.00	$ 0.90
Dividends payment date	Jan. 14, 2022	Oct. 15, 2021	Jul. 15, 2021	Apr. 15, 2021	Jan. 15, 2021	Oct. 15, 2020	Jul. 15, 2020	Apr. 15, 2020	Jan. 15, 2020	Oct. 15, 2019	Jul. 15, 2019	Apr. 15, 2019
Dividends payable as of record date	$ 25,755	$ 25,714	$ 25,714	$ 25,633	$ 23,933	$ 23,934	$ 23,931	$ 23,931	$ 21,500	$ 21,500	$ 21,508	$ 20,011	$ 25,755	$ 23,933	$ 21,500
Dividends record date	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 28, 2019	Mar. 29, 2019