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Regulatory Requirements And Capital Ratios (Schedule Of Capital Amounts And Ratios) (Details) $ in Thousands | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
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Parent Company |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
CET1 capital | $ 598,068 | $ 555,532
CET1 ratio | 0.162 | 0.161
CET1 capital, minimum capital required basel III fully phased in | $ 257,965 | $ 241,772
CET1 ratio, minimum capital required basel III fully phased in | 7.00% | 7.00%
CET1 capital, required to be well-capitalized | $ 239,538 | $ 224,503
CET1 ratio, required to be well capitalized | 6.50% | 6.50%
Tier I capital | $ 598,068 | $ 555,532
Tier I capital, ratio | 0.162 | 0.161
Tier 1, capital, minimum capital required basel III fully phased in | $ 313,243 | $ 293,581
Tier 1, ratio, minimum capital required basel III fully phased in | 8.50% | 8.50%
Tier 1, capital, required to be well-capitalized | $ 294,817 | $ 276,311
Tier 1, ratio, required to be well-capitalized | 0.080 | 0.080
Total capital | $ 612,654 | $ 570,336
Total capital, ratio | 0.166 | 0.165
Total capital, minimum capital required basel III fully phased in | $ 386,947 | $ 362,659
Total capital, ratio, minimum capital required basel III fully phased in | 10.50% | 10.50%
Total capital, required to be well-capitalized | $ 368,521 | $ 345,389
Total capital, ratio, required to be well-capitalized | 0.100 | 0.100
Tier 1 Leverage Capital, Average Assets | $ 598,068 | $ 555,532
Tier I Leverage Ratio, Average Assets | 0.100 | 0.094
Tier 1 Leverage Capital, minimum capital required basel III fully phased in | $ 238,954 | $ 235,403
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 | $ 298,692 | $ 294,254
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 | $ 508,586 | $ 492,721
CET1 ratio | 0.139 | 0.144
CET1 capital, minimum capital required basel III fully phased in | $ 256,520 | $ 240,392
CET1 ratio, minimum capital required basel III fully phased in | 7.00% | 7.00%
CET1 capital, required to be well-capitalized | $ 238,197 | $ 223,221
CET1 ratio, required to be well capitalized | 6.50% | 6.50%
Tier I capital | $ 508,586 | $ 492,721
Tier I capital, ratio | 0.139 | 0.144
Tier 1, capital, minimum capital required basel III fully phased in | $ 311,488 | $ 291,905
Tier 1, ratio, minimum capital required basel III fully phased in | 8.50% | 8.50%
Tier 1, capital, required to be well-capitalized | $ 293,166 | $ 274,734
Tier 1, ratio, required to be well-capitalized | 0.080 | 0.080
Total capital | $ 523,172 | $ 507,526
Total capital, ratio | 0.143 | 0.148
Total capital, minimum capital required basel III fully phased in | $ 384,780 | $ 360,588
Total capital, ratio, minimum capital required basel III fully phased in | 10.50% | 10.50%
Total capital, required to be well-capitalized | $ 366,457 | $ 343,418
Total capital, ratio, required to be well-capitalized | 0.100 | 0.100
Tier 1 Leverage Capital, Average Assets | $ 508,586 | $ 492,721
Tier I Leverage Ratio, Average Assets | 0.086 | 0.085
Tier 1 Leverage Capital, minimum capital required basel III fully phased in | $ 237,973 | $ 233,342
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 | $ 297,466 | $ 291,678
Tier 1 Leverage Capital, Average Assets, Well Capitalized Ratio | 0.050 | 0.050

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