Income Taxes - Tax Status of Dividends (Details) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Schedule of Tax Status of Dividends [Line Items]
Dividend per share	$ 2.41	$ 2.38	$ 2.34
Ordinary income	92.00%	100.00%	97.00%
Capital gain	8.00%	0.00%	3.00%
Additional tax status information:
Allocation of Dividends, Qualified Dividend Income	1.00%	0.00%	0.00%
Allocation of Dividends, Section 199A Dividend	91.00%	100.00%	97.00%
Allocation of Dividend, Section 897 ordinary dividends	2.00%	0.00%	0.00%
Allocation of Dividends, Section 897 capital gains	4.00%	0.00%	0.00%
Parent Company [Member]
Schedule of Tax Status of Dividends [Line Items]
Dividend per share	$ 2.53	$ 2.19	$ 2.34