Series I Preferred Stock Series I Preferred Stock [Member] Series I Preferred Stock Exchange [Domain] Exchange [Domain] Entity Information [Line Items] Entity Information [Line Items] Document Period End Date Document Period End Date Pre-commencement Tender Offer Pre-commencement Tender Offer Class of Stock [Domain] Class of Stock [Domain] Soliciting Material Soliciting Material City Area Code City Area Code Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Central Index Key Entity Central Index Key New York Stock Exchange NEW YORK STOCK EXCHANGE, INC. [Member] Entity Address, City or Town Entity Address, City or Town Current Fiscal Year End Date Current Fiscal Year End Date Security Exchange Name Security Exchange Name Title of 12(b) Security Title of 12(b) Security Written Communications Written Communications Local Phone Number Local Phone Number Trading Symbol Trading Symbol Series J Preferred Stock Series J Preferred Stock [Member] Series J Preferred Stock [Member] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Entity Address, State or Province Entity Address, State or Province Pre-commencement Issuer Tender Offer Pre-commencement Issuer Tender Offer Cover [Abstract] Cover [Abstract] Entity Emerging Growth Company Entity Emerging Growth Company Common Class A Common Class A [Member] Entity Listings, Exchange [Axis] Entity Listings, Exchange [Axis] Document Type Document Type Amendment Flag Amendment Flag Class of Stock [Axis] Class of Stock [Axis] Entity File Number Entity File Number Entities [Table] Entities [Table] Entity Tax Identification Number Entity Tax Identification Number Entity Address, Address Line One Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Two Series H Preferred Stock Series H Preferred Stock [Member] Entity Registrant Name Entity Registrant Name