Entity Central Index Key
Cover [Abstract]
[Line Items] for Document and Entity Information [Table]
Document and Entity Information [Table]
Documentand Entity Information [Table]
Documentand Entity Information [Table]
Class of Stock
Statement Class Of Stock [Axis]
Class of Stock
Class Of Stock [Domain]
Common Stock
Common Stock [Member]
Two thousand and sixteen series a five point two five percentage enhanced junior subordinated notes.
2016 Series A 5.25% Enhanced Junior Subordinated Notes
Two Thousand And Sixteen Series A Five Point Two Five Percentage Enhanced Junior Subordinated Notes [Member]
Two thousand and nineteen Series A corporate units.
2019 Series A Corporate Units
Two Thousand And Nineteen Series A Corporate Units [Member]
Documentand Entity Information [Line Items]
Documentand Entity Information [Line Items]
Document Type
Document Type
Amendment Flag
Amendment Flag
Document Period End Date
Document Period End Date
Entity Registrant Name
Entity Registrant Name
Entity Central Index Key
Entity Emerging Growth Company
Entity Emerging Growth Company
Title of 12(b) Security
Security12b Title
Trading Symbol
Trading Symbol
Security Exchange Name
Security Exchange Name
Entity Incorporation, State or Country Code
Entity Incorporation State Country Code
Entity File Number
Entity File Number
Entity Tax Identification Number
Entity Tax Identification Number
Entity Address, Address Line One
Entity Address Address Line1
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
City Area Code
City Area Code
Local Phone Number
Local Phone Number
Written Communications
Written Communications
Soliciting Material
Soliciting Material
Pre-commencement Tender Offer
Pre Commencement Tender Offer
Pre-commencement Issuer Tender Offer
Pre Commencement Issuer Tender Offer