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