Income Taxes Charaterization of Distributions (Details) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Contingency [Line Items]
Dividends per common share:	$ 3.28	$ 3.12	$ 2.96
Percent of Total Dividends Paid	100.00%	100.00%	100.00%
Ordinary Income [Member]
Income Tax Contingency [Line Items]
Dividends per common share:	$ 2.31	$ 2.14	$ 1.66
Percent of Total Dividends Paid	70.47%	68.54%	56.00%
Capital Gains [Member]
Income Tax Contingency [Line Items]
Dividends per common share:	$ 0	$ 0.06	$ 0
Percent of Total Dividends Paid	0.00%	1.92%	0.00%
Return of Capital [Member]
Income Tax Contingency [Line Items]
Dividends per common share:	$ 0.97	$ 0.92	$ 1.30
Percent of Total Dividends Paid	29.53%	29.54%	44.00%