DEI [Abstract]
DEI [Abstract]
Entities [Table]
Entities [Table]
Class of Stock [Axis]
Class of Stock [Axis]
Class of Stock [Domain]
Class of Stock [Domain]
Common Stock [Member]
Common Stock [Member]
Depository shares each representing a 1/1,000th interest in a share of 7.750% Series B Cumulative Redeemable Preferred Stock [Member]
Depository shares each representing a 1/1,000th interest in a share of 7.750% Series B Cumulative Redeemable Preferred Stock [Member]
Depository shares each representing a 1/1,000th interest in a share of 7.750% Series B Cumulative Redeemable Preferred Stock [Member]
Depository shares each representing a 1/1,000th interest in a share of 7.000% Series C Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock [Member]
Depository shares each representing a 1/1,000th interest in a share of 7.000% Series C Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock [Member]
Depository shares each representing a 1/1,000th interest in a share of 7.000% Series C Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock [Member]
Depository shares each representing a 1/1,000th interest in a share of 6.875% Series D Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock [Member]
Depository shares each representing a 1/1,000th interest in a share of 6.875% Series D Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock [Member]
Depository shares each representing a 1/1,000th interest in a share of 6.875% Series D Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock [Member]
Depository shares each representing a 1/1000th interest in a share of 6.500% Series E Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock [Member]
Depository shares each representing a 1/1000th interest in a share of 6.500% Series E Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock [Member]
Depository shares each representing a 1/1000th interest in a share of 6.500% Series E Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock [Member]
Legal Entity [Axis]
Legal Entity [Axis]
Entity [Domain]
Entity [Domain]
Entity Information [Line Items]
Entity Information [Line Items]
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
Pre-commencement Issuer Tender Offer
Pre-commencement Issuer Tender Offer
Pre-commencement Tender Offer
Pre-commencement Tender Offer
Soliciting Material
Soliciting Material
Written Communications
Written Communications
City Area Code
City Area Code
Local Phone Number
Local Phone Number
Entity Incorporation, State or Country Code
Entity Incorporation, State or Country Code
Entity File Number
Entity File Number
Document Type
Document Type
Document Period End Date
Document Period End Date
Entity Registrant Name
Entity Registrant Name
Entity Tax Identification Number
Entity Tax Identification Number
Entity Address, Address Line One
Entity Address, Address Line One
Entity Address, City or Town
Entity Address, City or Town
Entity Address, State or Province
Entity Address, State or Province
Entity Address, Postal Zip Code
Entity Address, Postal Zip Code
Trading Symbol
Trading Symbol
Security Exchange Name
Security Exchange Name
Amendment Flag
Amendment Flag