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Redemption of Preferred Stock	12 Months Ended
Redemption of Preferred Stock	Dec. 31, 2019
Equity [Abstract]
Redemption of Preferred Stock	Redemption of Preferred Stock We issued an irrevocable notice of redemption with respect to our 6.625% Monthly Income Class F Preferred Stock, or the Class F preferred stock, in March 2017, and, as a result, we incurred a non–cash charge of $13.4 million for 2017, representing the Class F preferred stock original issuance costs that we paid in 2012.