0.800% Senior Notes Due 2024 Senior Notes Due 2024 [Member] 0.800% Senior Notes Due 2024 Entity Information [Line Items] Entity Information [Line Items] Document Period End Date Document Period End Date Depositary Shares, Each Representing a 1/40th Interest in a Share of Fixed Rate Non-Cumulative Perpetual Preferred Stock, Series I Series I Preferred Stock [Member] Outstanding nonredeemable series I preferred stock or outstanding series I preferred stock. Classified within stockholders' equity if nonredeemable or redeemable solely at the option of the issuer. Classified within temporary equity if redemption is outside the control of the issuer. Common Stock (par value $.01 per share) Common Stock [Member] Pre-commencement Tender Offer Pre-commencement Tender Offer Depositary Shares, Each Representing a 1/40th Interest in a Share of Fixed Rate Non-Cumulative Perpetual Preferred Stock, Series N Series N Preferred Stock [Member] Series N Preferred Stock Member 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 Depositary Shares, Each Representing a 1/40th Interest in a Share of Fixed Rate Non-Cumulative Perpetual Preferred Stock, Series K Series K Preferred Stock Member [Member] Outstanding nonredeemable series K preferred stock or outstanding series K preferred stock. Classified within stockholders' equity if nonredeemable or redeemable solely at the option of the issuer. Classified within temporary equity if redemption is outside the control of the issuer. Class of Securities [Axis] Class of Securities [Axis] Class of Securities Entity Address, City or Town Entity Address, City or Town Document And Entity Information [Abstract] Document And Entity Information [Abstract] Document And Entity Information [Abstract] 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 Class of Securities [Domain] Security Class [Domain] [Domain] for Security Class Trading Symbol Trading Symbol Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Depositary Shares, Each Representing a 1/40th Interest in a Share of Fixed Rate Non-Cumulative Perpetual Preferred Stock, Series J Series J Preferred Stock [Member] Outstanding nonredeemable series J preferred stock or outstanding series J preferred stock. Classified within stockholders' equity if nonredeemable or redeemable solely at the option of the issuer. Classified within temporary equity if redemption is outside the control of the issuer. Entity Address, State or Province Entity Address, State or Province Pre-commencement Issuer Tender Offer Pre-commencement Issuer Tender Offer Entity Emerging Growth Company Entity Emerging Growth Company 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 Depositary Shares, Each Representing a 1/40th Interest in a Share of Fixed Rate Non-Cumulative Perpetual Preferred Stock, Series L Series L Preferred Stock Member [Member] Series L Preferred Stock Member Entity Registrant Name Entity Registrant Name 1.650% Senior Notes Due 2029 Senior Notes Due 2029 [Member] 1.650% Senior Notes Due 2029