Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Series D Preferred Stock, Depository Share [Member] Series D Preferred Stock, Depository Share [Member] Series D Preferred Stock, Depository Share [Member] Entity Address, City or Town Entity Address, City or Town Soliciting Material Soliciting Material Entity Address, Address Line One Entity Address, Address Line One Security Exchange Name Security Exchange Name City Area Code City Area Code Cover [Abstract] Cover [Abstract] Entity Tax Identification Number Entity Tax Identification Number Entity File Number Entity File Number Document Type Document Type Entity Central Index Key Entity Central Index Key Entity Emerging Growth Company Entity Emerging Growth Company Title of 12(b) Security Title of 12(b) Security Entity Address, State or Province Entity Address, State or Province Amendment Flag Amendment Flag Trading Symbol Trading Symbol Document Period End Date Document Period End Date Entity Registrant Name Entity Registrant Name Written Communications Written Communications Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Pre-commencement Tender Offer Pre-commencement Tender Offer Common Stock [Member] Common Stock [Member] Class of Stock [Axis] Class of Stock [Axis] Series G Preferred Stock, Depository Share [Member] Series G Preferred Stock, Depository Share [Member] Series G Preferred Stock, Depository Share [Member] Local Phone Number Local Phone Number Entity Address, Postal Zip Code Entity Address, Postal Zip Code Pre-commencement Issuer Tender Offer Pre-commencement Issuer Tender Offer Class of Stock [Domain] Class of Stock [Domain] Class of Stock [Line Items] Class of Stock [Line Items]