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Regulatory Requirements And Capital Ratios (Schedule Of Capital Amounts And Ratios) (Details) $ in Thousands | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
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Parent Company |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
CET1 capital | $ 557,641 | $ 532,640
CET1 ratio | 0.162 | 0.160
CET1 capital, minimum capital required basel III fully phased in | $ 241,221 | $ 232,358
CET1 ratio, minimum capital required basel III fully phased in | 7.00% | 7.00%
CET1 capital, required to be well-capitalized | $ 223,991 | $ 215,761
CET1 ratio, required to be well capitalized | 6.50% | 6.50%
Tier I capital | $ 557,641 | $ 536,640
Tier I capital, ratio | 0.162 | 0.162
Tier 1, capital, minimum capital required basel III fully phased in | $ 292,911 | $ 282,150
Tier 1, ratio, minimum capital required basel III fully phased in | 8.50% | 8.50%
Tier 1, capital, required to be well-capitalized | $ 275,681 | $ 265,552
Tier 1, ratio, required to be well-capitalized | 0.080 | 0.080
Total capital | $ 577,292 | $ 548,291
Total capital, ratio | 0.168 | 0.165
Total capital, minimum capital required basel III fully phased in | $ 361,831 | $ 348,538
Total capital, ratio, minimum capital required basel III fully phased in | 10.50% | 10.50%
Total capital, required to be well-capitalized | $ 344,601 | $ 331,941
Total capital, ratio, required to be well-capitalized | 0.100 | 0.100
Tier 1 Leverage Capital, Average Assets | $ 557,641 | $ 536,640
Tier I Leverage Ratio, Average Assets | 0.102 | 0.110
Tier 1 Leverage Capital, minimum capital required basel III fully phased in | $ 218,163 | $ 195,558
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 | $ 272,704 | $ 244,448
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 | $ 482,754 | $ 459,006
CET1 ratio | 0.141 | 0.139
CET1 capital, minimum capital required basel III fully phased in | $ 239,569 | $ 230,808
CET1 ratio, minimum capital required basel III fully phased in | 7.00% | 7.00%
CET1 capital, required to be well-capitalized | $ 222,457 | $ 214,322
CET1 ratio, required to be well capitalized | 6.50% | 6.50%
Tier I capital | $ 482,754 | $ 459,006
Tier I capital, ratio | 0.141 | 0.139
Tier 1, capital, minimum capital required basel III fully phased in | $ 290,906 | $ 280,267
Tier 1, ratio, minimum capital required basel III fully phased in | 8.50% | 8.50%
Tier 1, capital, required to be well-capitalized | $ 273,793 | $ 263,781
Tier 1, ratio, required to be well-capitalized | 0.080 | 0.080
Total capital | $ 502,405 | $ 470,656
Total capital, ratio | 0.147 | 0.143
Total capital, minimum capital required basel III fully phased in | $ 359,354 | $ 346,213
Total capital, ratio, minimum capital required basel III fully phased in | 10.50% | 10.50%
Total capital, required to be well-capitalized | $ 342,242 | $ 329,726
Total capital, ratio, required to be well-capitalized | 0.100 | 0.100
Tier 1 Leverage Capital, Average Assets | $ 482,754 | $ 459,006
Tier I Leverage Ratio, Average Assets | 0.090 | 0.095
Tier 1 Leverage Capital, minimum capital required basel III fully phased in | $ 215,277 | $ 193,074
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 | $ 269,097 | $ 241,342
Tier 1 Leverage Capital, Average Assets, Well Capitalized Ratio | 0.050 | 0.050

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