Fair Value Of Financial Instruments (Schedule Of Fair Value Of Financial Instruments) (Details) - USD ($) $ in Thousands |
Dec. 31, 2020 |
Dec. 31, 2019 |
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Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||
Securities purchased under agreements to resell | [1] | $ 217,930 | $ 385,008 | |||||
Financial instruments owned | 694,028 | 972,932 | ||||||
Available-for-sale securities | 2,230,297 | 3,254,737 | ||||||
Held-to-maturity securities | 4,107,960 | 2,827,883 | ||||||
Derivative contracts | [2] | 1,086 | ||||||
Securities sold under agreements to repurchase | [3] | 190,955 | 391,634 | |||||
Financial instruments sold, but not yet purchased, at fair value | 437,978 | 662,852 | ||||||
Federal Home Loan Bank advances | 0 | |||||||
Senior notes | 1,112,409 | 1,017,010 | ||||||
Carrying Value [Member] | ||||||||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||
Cash and cash equivalents | 2,279,274 | 1,142,596 | ||||||
Cash segregated for regulatory purposes | 172,932 | 131,374 | ||||||
Securities purchased under agreements to resell | 217,930 | 385,008 | ||||||
Financial instruments owned | 694,028 | 972,932 | ||||||
Available-for-sale securities | 2,230,297 | 3,254,737 | ||||||
Held-to-maturity securities | 4,117,384 | 2,856,219 | ||||||
Bank loans | 11,006,760 | 9,624,042 | ||||||
Loans held for sale | 551,248 | 389,693 | ||||||
Investments | 113,862 | 79,972 | ||||||
Derivative contracts | [2] | 1,086 | ||||||
Securities sold under agreements to repurchase | 190,955 | 391,634 | ||||||
Bank deposits | 17,396,497 | 15,332,581 | ||||||
Financial instruments sold, but not yet purchased, at fair value | 437,978 | 662,852 | ||||||
Federal Home Loan Bank advances | 250,000 | |||||||
Senior notes | 1,112,409 | 1,017,010 | ||||||
Debentures to Stifel Financial Capital Trusts | 60,000 | 60,000 | ||||||
Estimated Fair Value [Member] | ||||||||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||
Cash and cash equivalents | 2,279,274 | 1,142,596 | ||||||
Cash segregated for regulatory purposes | 172,932 | 131,374 | ||||||
Securities purchased under agreements to resell | 217,930 | 385,008 | ||||||
Financial instruments owned | 694,028 | 972,932 | ||||||
Available-for-sale securities | 2,230,297 | 3,254,737 | ||||||
Held-to-maturity securities | 4,107,960 | 2,827,883 | ||||||
Bank loans | 11,088,058 | 9,801,986 | ||||||
Loans held for sale | 551,248 | 389,693 | ||||||
Investments | 113,862 | 79,972 | ||||||
Derivative contracts | [2] | 1,086 | ||||||
Securities sold under agreements to repurchase | 190,955 | 391,634 | ||||||
Bank deposits | 17,192,722 | 14,467,894 | ||||||
Financial instruments sold, but not yet purchased, at fair value | 437,978 | 662,852 | ||||||
Federal Home Loan Bank advances | 250,000 | |||||||
Senior notes | 1,265,669 | 1,069,425 | ||||||
Debentures to Stifel Financial Capital Trusts | $ 41,071 | $ 45,847 | ||||||
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