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Regulatory Requirements And Capital Ratios (Schedule Of Capital Amounts And Ratios) (Details) $ in Thousands | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($)
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Parent Company |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
CET1 capital | $ 688,707 | $ 627,579
CET1 ratio | 0.165 | 0.157
CET1 capital, minimum capital required basel III fully phased in | $ 291,989 | $ 279,768
CET1 ratio, minimum capital required basel III fully phased in | 7.00% | 7.00%
CET1 capital, required to be well-capitalized | $ 271,133 | $ 259,875
CET1 ratio, required to be well capitalized | 6.50% | 6.50%
Tier I capital | $ 688,707 | $ 627,579
Tier I capital, ratio | 0.165 | 0.157
Tier 1, capital, minimum capital required basel III fully phased in | $ 354,558 | $ 339,718
Tier 1, ratio, minimum capital required basel III fully phased in | 8.50% | 8.50%
Tier 1, capital, required to be well-capitalized | $ 333,702 | $ 319,735
Tier 1, ratio, required to be well-capitalized | 0.080 | 0.080
Total capital | $ 709,820 | $ 648,646
Total capital, ratio | 0.170 | 0.162
Total capital, minimum capital required basel III fully phased in | $ 437,983 | $ 419,652
Total capital, ratio, minimum capital required basel III fully phased in | 10.50% | 10.50%
Total capital, required to be well-capitalized | $ 417,127 | $ 399,669
Total capital, ratio, required to be well-capitalized | 0.100 | 0.100
Tier 1 Leverage Capital, Average Assets | $ 688,707 | $ 627,579
Tier I Leverage Ratio, Average Assets | 0.106 | 0.102
Tier 1 Leverage Capital, minimum capital required basel III fully phased in | $ 259,325 | $ 245,468
Tier 1 Leverage Ratio, minimum capital required basel III fully phased in | 4.00% | 4.00%
Tier 1 Leverage Capital Required to be Well Capitalized | $ 324,156 | $ 306,835
Tier 1 Leverage Capital, Average Assets, Well Capitalized Ratio | 0.050 | 0.050
City National |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
CET1 capital | $ 563,301 | $ 549,031
CET1 ratio | 0.136 | 0.138
CET1 capital, minimum capital required basel III fully phased in | $ 291,068 | $ 278,692
CET1 ratio, minimum capital required basel III fully phased in | 7.00% | 7.00%
CET1 capital, required to be well-capitalized | $ 270,277 | $ 258,785
CET1 ratio, required to be well capitalized | 6.50% | 6.50%
Tier I capital | $ 563,301 | $ 549,031
Tier I capital, ratio | 0.136 | 0.138
Tier 1, capital, minimum capital required basel III fully phased in | $ 353,439 | $ 338,412
Tier 1, ratio, minimum capital required basel III fully phased in | 8.50% | 8.50%
Tier 1, capital, required to be well-capitalized | $ 332,649 | $ 318,505
Tier 1, ratio, required to be well-capitalized | 0.080 | 0.080
Total capital | $ 584,415 | $ 570,099
Total capital, ratio | 0.141 | 0.143
Total capital, minimum capital required basel III fully phased in | $ 436,602 | $ 418,038
Total capital, ratio, minimum capital required basel III fully phased in | 10.50% | 10.50%
Total capital, required to be well-capitalized | $ 415,811 | $ 398,131
Total capital, ratio, required to be well-capitalized | 0.100 | 0.100
Tier 1 Leverage Capital, Average Assets | $ 563,301 | $ 549,031
Tier I Leverage Ratio, Average Assets | 0.087 | 0.089
Tier 1 Leverage Capital, minimum capital required basel III fully phased in | $ 258,477 | $ 245,587
Tier 1 Leverage Ratio, minimum capital required basel III fully phased in | 4.00% | 4.00%
Tier 1 Leverage Capital Required to be Well Capitalized | $ 323,096 | $ 306,984
Tier 1 Leverage Capital, Average Assets, Well Capitalized Ratio | 0.050 | 0.050

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