v3.24.4
Capital Adequacy (Tables)
12 Months Ended
Dec. 31, 2023
Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract]  
Schedule of Minimum and Well-Capitalized Requirements
The following table shows the actual capital amounts and ratios of DFS and Discover Bank and comparisons of each to the regulatory minimum and “well-capitalized” requirements (dollars in millions):
 ActualMinimum Capital
Requirements
Capital Requirements
To Be Classified as
Well-Capitalized
 Amount
Ratio(1)
AmountRatio
Amount(2)
Ratio(2)
(As Restated)
(As Restated)
(As Restated)
(As Restated)
December 31, 2023
Total capital (to risk-weighted assets)
Discover Financial Services$17,399 13.2 %$10,509 
≥8.0%
$13,137 
≥10.0%
Discover Bank$16,409 12.7 %$10,381 
≥8.0%
$12,976 
≥10.0%
Tier 1 capital (to risk-weighted assets)
Discover Financial Services$15,279 11.6 %$7,882 
≥6.0%
$7,882 
≥6.0%
Discover Bank$13,459 10.4 %$7,786 
≥6.0%
$10,381 
≥8.0%
Tier 1 capital (to average assets)
Discover Financial Services$15,279 10.3 %$5,915 
≥4.0%
N/AN/A
Discover Bank$13,459 9.2 %$5,833 
≥4.0%
$7,292 
≥5.0%
Common Equity Tier 1 (to risk-weighted assets)
Discover Financial Services$14,223 10.8 %$5,911 
≥4.5%
N/AN/A
Discover Bank$13,459 10.4 %$5,839 
≥4.5%
$8,435 
≥6.5%
December 31, 2022
Total capital (to risk-weighted assets)
Discover Financial Services$17,557 15.3 %$9,151 
≥8.0%
$11,439 
≥10.0%
Discover Bank$15,942 14.1 %$9,051 
≥8.0%
$11,314 
≥10.0%
Tier 1 capital (to risk-weighted assets)
Discover Financial Services$15,590 13.6 %$6,863 
≥6.0%
$6,863 
≥6.0%
Discover Bank$13,040 11.5 %$6,788 
≥6.0%
$9,051 
≥8.0%
Tier 1 capital (to average assets)
Discover Financial Services$15,590 12.1 %$5,147 
≥4.0%
N/AN/A
Discover Bank$13,040 10.3 %$5,086 
≥4.0%
$6,357 
≥5.0%
Common Equity Tier 1 (to risk-weighted assets)
Discover Financial Services$14,534 12.7 %$5,148 
≥4.5%
N/AN/A
Discover Bank$13,040 11.5 %$5,091 
≥4.5%
$7,354 
≥6.5%
(1)Capital ratios are calculated based on the Basel III standardized approach rules, subject to applicable transition provisions, including CECL transition provisions.
(2)The Basel III rules do not establish well-capitalized thresholds for these measures for bank holding companies. Existing well-capitalized thresholds established in the Federal Reserve’s Regulation Y have been included where available.