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Name:	us-gaap_LineOfCreditFacilityLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Credit Facilities (Summary of Distribution Limit Percent of Modified FFO) (Details) - New Credit Facilities	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	Dec. 31, 2019
Line of Credit Facility [Line Items]
Long-term debt, covenant requirements, distribution in excess of modified FFO, percent								95.00%
Subsequent Event
Line of Credit Facility [Line Items]
Long-term debt, covenant requirements, distribution in excess of modified FFO, percent	100.00%	100.00%	105.00%	105.00%	110.00%	110.00%	115.00%