| Form N-CSR Cover | 12 Months Ended |
| Oct. 31, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | PRIMECAP Odyssey Funds |
| Entity Central Index Key | 0001293967 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Oct. 31, 2024 |
| Shareholder Report | 12 Months Ended |
| Oct. 31, 2024 USD ($) $ / shares | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | PRIMECAP Odyssey Funds |
| Entity Central Index Key | 0001293967 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Oct. 31, 2024 |
| PRIMECAP Odyssey Stock Fund | |
| Shareholder Report [Line Items] | |
| Fund Name | PRIMECAP Odyssey Stock Fund |
| Class Name | PRIMECAP Odyssey Stock Fund |
| Trading Symbol | POSKX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the PRIMECAP Odyssey Stock Fund for the period of November 1, 2023, to October 31, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at . You can also request this information by contacting us at 1-800-729-2307 . |
| Additional Information Phone Number | 1-800-729-2307 |
| Additional Information Website | https://prospectus-express.broadridge.com/summary.asp?doctype=ann&cid=primecap&fid=74160Q301 |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment) Fund Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment PRIMECAP Odyssey Stock Fund $77 0.67% |
| Expenses Paid, Amount | $ 77 |
| Expense Ratio, Percent | 0.67% |
| Factors Affecting Performance [Text Block] | HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE? For the fiscal year ended October 31, 2024, the PRIMECAP Odyssey Stock Fund’s total return of +29.83% trailed the S&P 500 ® Index’s total return of +38.02%. • During the fiscal year, the U.S. economy proved resilient as a firm labor market and robust consumer spending delivered healthy real GDP growth. Core inflation moderated somewhat but persisted at above-target levels, forcing the Federal Reserve to keep its benchmark rate above 5% for most of the year. But as economic data softened towards period-end, the Fed in September initiated its long-awaited dovish pivot with a 50 basis point cut. • Increasing optimism in a so-called “soft landing” and the prospect of lower interest rates bolstered equities. The S&P 500 ® Index’s forward price-to-earnings multiple expanded over 20% during the period, from roughly 17x to 21x, driving most of the market’s return. Forward earnings also showed healthy double-digit growth. • The Fund logged a strong gain but was unable to keep pace with the S&P 500 ® Index’s torrid rise. Relative to the S&P 500 ® Index, sector allocation and stock selection were both unfavorable. • The Fund’s sector allocation headwind stemmed from its significant overweight position in health care and its substantial underweight positions in the two best performing sectors, information technology and communication services. • Stock selection was positive in the health care, industrials, and financials sectors. Stock selection was broadly unfavorable otherwise, with the information technology sector serving as the primary detractor. |
| Performance Past Does Not Indicate Future [Text] | Total return represents past performance, which is no guarantee of future results. |
| Line Graph [Table Text Block] | |
| Average Annual Return [Table Text Block] | ANNUAL AVERAGE TOTAL RETURN (%) 1 Year 5 Year 10 Year PRIMECAP Odyssey Stock Fund 29.83 12.27 11.41 S&P 500 ® Index 38.02 15.27 13.00 |
| No Deduction of Taxes [Text Block] | Investment result data reflects deduction of fund operating expenses. |
| Updated Performance Information Location [Text Block] | Current performance may be different than quoted, and performance as of the most recent month-end can be obtained by calling 1-800-729-2307 or by visiting https://www.primecap.com/funds/primecap-odyssey-stock-fund/ . |
| Net Assets | $ 5,229,150,351 |
| Holdings Count | $ / shares | 144 |
| Advisory Fees Paid, Amount | $ 30,958,259 |
| Investment Company Portfolio Turnover | 3% |
| Additional Fund Statistics [Text Block] | KEY FUND STATISTICS (as of October 31, 2024) Net Assets $5,229,150,351 Number of Holdings 144 Net Advisory Fee $30,958,259 Portfolio Turnover 3% |
| Holdings [Text Block] | Top 10 Issuers (%) Eli Lilly & Co. 9.5% AstraZeneca PLC 4.0% AECOM 3.7% Amgen, Inc. 3.0% KLA Corp. 2.9% Flex Ltd. 2.9% FedEx Corp. 2.9% Microsoft Corp. 2.9% Siemens AG 2.9% Raymond James Financial, Inc. 2.1% Top Sectors (%) Health Care 26.1% Information Technology 22.6% Industrials 21.8% Financials 9.4% Consumer Discretionary 8.5% Communication Services 3.6% Energy 2.3% Consumer Staples 1.9% Materials 1.8% Cash & Other 2.0% |
| Updated Prospectus Web Address | https://www.primecap.com/funds/primecap-odyssey-stock-fund/ |
| PRIMECAP Odyssey Growth Fund | |
| Shareholder Report [Line Items] | |
| Fund Name | PRIMECAP Odyssey Growth Fund |
| Class Name | PRIMECAP Odyssey Growth Fund |
| Trading Symbol | POGRX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the PRIMECAP Odyssey Growth Fund for the period of November 1, 2023, to October 31, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at https://prospectus-express.broadridge.com/summary.asp?doctype=ann&cid=primecap&fid=74160Q103 . You can also request this information by contacting us at 1-800-729-2307 . |
| Additional Information Phone Number | 1-800-729-2307 |
| Additional Information Website | https://prospectus-express.broadridge.com/summary.asp?doctype=ann&cid=primecap&fid=74160Q103 |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment) Fund Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment PRIMECAP Odyssey Growth Fund $75 0.66% |
| Expenses Paid, Amount | $ 75 |
| Expense Ratio, Percent | 0.66% |
| Factors Affecting Performance [Text Block] | HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE? For the fiscal year ended October 31, 2024, the PRIMECAP Odyssey Growth Fund returned +27.97%, trailing the S&P 500 ® Index’s +38.02% total return and the Russell 1000 Growth Index’s total return of +43.77%. • During the fiscal year, the U.S. economy proved resilient as a firm labor market and robust consumer spending delivered healthy real GDP growth. Core inflation moderated somewhat but persisted at above-target levels, forcing the Federal Reserve to keep its benchmark rate above 5% for most of the year. But as economic data softened towards period-end, the Fed in September initiated its long-awaited dovish pivot with a 50 basis point cut. • Increasing optimism in a so-called “soft landing” and the prospect of lower interest rates bolstered equities. The S&P 500 ® Index’s forward price-to-earnings multiple expanded over 20% during the period, from roughly 17x to 21x, driving most of the market’s return. Forward earnings also showed healthy double-digit growth. • The Fund logged a strong gain but was unable to keep pace with the S&P 500 ® Index’s torrid rise. Relative to the S&P 500 ® Index, sector allocation and stock selection were both unfavorable. • The Fund’s sector allocation headwind stemmed primarily from its significant overweight position in health care. Otherwise, underweight positions in the two best performing sectors, information technology and communication services, roughly offset the Fund’s underweight position in the consumer staples sector. • Stock selection was most positive in the health care sector. Selection was weakest in the information technology sector, while selection in the communication services and consumer discretionary sectors also detracted from relative performance. |
| Performance Past Does Not Indicate Future [Text] | Total return represents past performance, which is no guarantee of future results. |
| Line Graph [Table Text Block] | |
| Average Annual Return [Table Text Block] | ANNUAL AVERAGE TOTAL RETURN (%) 1 Year 5 Year 10 Year PRIMECAP Odyssey Growth Fund 27.97 11.81 11.55 S&P 500 ® Index 38.02 15.27 13.00 |
| No Deduction of Taxes [Text Block] | Investment result data reflects deduction of fund operating expenses. |
| Updated Performance Information Location [Text Block] | Current performance may be different than quoted, and performance as of the most recent month-end can be obtained by calling 1-800-729-2307 or by visiting https://www.primecap.com/funds/primecap-odyssey-growth-fund/ . |
| Net Assets | $ 5,845,196,577 |
| Holdings Count | $ / shares | 188 |
| Advisory Fees Paid, Amount | $ 35,365,762 |
| Investment Company Portfolio Turnover | 5% |
| Additional Fund Statistics [Text Block] | KEY FUND STATISTICS (as of October 31, 2024) Net Assets $5,845,196,577 Number of Holdings 188 Net Advisory Fee $35,365,762 Portfolio Turnover 5% |
| Holdings [Text Block] | Top 10 Issuers (%) Eli Lilly & Co. 7.9% Alphabet, Inc. - Class A & C 3.8% Raymond James Financial, Inc. 3.2% Micron Technology, Inc. 3.0% AECOM 2.8% BeiGene Ltd. 2.4% Microsoft Corp. 2.3% Flex Ltd. 2.3% Amgen, Inc. 2.2% Biogen, Inc. 2.2% Top Sectors (%) Health Care 29.6% Information Technology 23.1% Industrials 17.6% Consumer Discretionary 8.7% Financials 8.5% Communication Services 7.0% Energy 2.1% Consumer Staples 1.2% Materials 0.6% Cash & Other 1.6% |
| Updated Prospectus Web Address | https://www.primecap.com/funds/primecap-odyssey-growth-fund/ |
| PRIMECAP Odyssey Aggressive Growth Fund | |
| Shareholder Report [Line Items] | |
| Fund Name | PRIMECAP Odyssey Aggressive Growth Fund |
| Class Name | PRIMECAP Odyssey Aggressive Growth Fund |
| Trading Symbol | POAGX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the PRIMECAP Odyssey Aggressive Growth Fund for the period of November 1, 2023, to October 31, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at https://prospectus-express.broadridge.com/summary.asp?doctype=ann&cid=primecap&fid=74160Q202 . You can also request this information by contacting us at 1-800-729-2307 . |
| Additional Information Phone Number | 1-800-729-2307 |
| Additional Information Website | https://prospectus-express.broadridge.com/summary.asp?doctype=ann&cid=primecap&fid=74160Q202 |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment) Fund Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment PRIMECAP Odyssey Aggressive Growth Fund $74 0.65% |
| Expenses Paid, Amount | $ 74 |
| Expense Ratio, Percent | 0.65% |
| Factors Affecting Performance [Text Block] | HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE? For the fiscal year ended October 31, 2024, the Aggressive Growth Fund’s total return of +27.27% trailed both the S&P 500 ® Index’s total return of +38.02% and the Russell Midcap Growth Index’s total return of +38.67%. • During the fiscal year, the U.S. economy proved resilient as a firm labor market and robust consumer spending delivered healthy real GDP growth. Core inflation moderated somewhat but persisted at above-target levels, forcing the Federal Reserve to keep its benchmark rate above 5% for most of the year. But as economic data softened towards period-end, the Fed in September initiated its long-awaited dovish pivot with a 50 basis point cut. • Increasing optimism in a so-called “soft landing” and the prospect of lower interest rates bolstered equities. The S&P 500 ® Index’s forward price-to-earnings multiple expanded over 20% during the period, from roughly 17x to 21x, driving most of the market’s return. Forward earnings also showed healthy double-digit growth. • The Fund logged a strong gain but was unable to keep pace with the S&P 500 ® Index’s torrid rise. Relative to the S&P 500 ® Index, sector allocation and stock selection were both unfavorable. • The Fund’s sector allocation headwind stemmed primarily from its significant overweight position in health care. Otherwise, underweight positions in communication services and financials partially offset the Fund’s underweight positions in consumer staples and energy. • Stock selection was most positive in the health care and industrials sectors. Selection was weakest in the information technology sector, while selection in the communication services, energy, and consumer discretionary sectors also detracted from relative performance. |
| Performance Past Does Not Indicate Future [Text] | Total return represents past performance, which is no guarantee of future results. |
| Line Graph [Table Text Block] | |
| Average Annual Return [Table Text Block] | ANNUAL AVERAGE TOTAL RETURN (%) 1 Year 5 Year 10 Year PRIMECAP Odyssey Aggressive Growth Fund 27.27 9.48 10.43 S&P 500 ® Index 38.02 15.27 13.00 |
| No Deduction of Taxes [Text Block] | Investment result data reflects deduction of fund operating expenses. |
| Updated Performance Information Location [Text Block] | Current performance may be different than quoted, and performance as of the most recent month-end can be obtained by calling 1-800-729-2307 or by visiting https://www.primecap.com/funds/primecap-odyssey-aggressive-growth-fund/ . |
| Net Assets | $ 6,882,857,448 |
| Holdings Count | $ / shares | 200 |
| Advisory Fees Paid, Amount | $ 38,429,054 |
| Investment Company Portfolio Turnover | 9% |
| Additional Fund Statistics [Text Block] | KEY FUND STATISTICS (as of October 31, 2024) Net Assets $6,882,857,448 Number of Holdings 200 Net Advisory Fee $38,429,054 Portfolio Turnover 9% |
| Holdings [Text Block] | Top 10 Issuers (%) Eli Lilly & Co. 5.6% Micron Technology, Inc. 4.1% Rhythm Pharmaceuticals, Inc. 3.2% Alphabet, Inc. - Class A & C 2.8% Flex Ltd. 2.7% Sony Group Corp. 2.5% MarketAxess Holdings, Inc. 2.3% AECOM 2.3% Tesla, Inc. 2.3% Biogen, Inc. 2.2% Top Sectors (%) Information Technology 27.7% Health Care 27.6% Industrials 14.4% Consumer Discretionary 12.6% Communication Services 6.5% Financials 5.9% Energy 1.3% Materials 1.0% Consumer Staples 0.7% Cash & Other 2.3% |
| Updated Prospectus Web Address | https://www.primecap.com/funds/primecap-odyssey-aggressive-growth-fund/ |
| Shareholder Report, Line Graph (Details) - USD ($) | 12 Months Ended | ||||||||||
| Oct. 31, 2024 | Oct. 31, 2023 | Oct. 31, 2022 | Oct. 31, 2021 | Oct. 31, 2020 | Oct. 31, 2019 | Oct. 31, 2018 | Oct. 31, 2017 | Oct. 31, 2016 | Oct. 31, 2015 | Oct. 31, 2014 | |
| PRIMECAP Odyssey Stock Fund | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | PRIMECAP Odyssey Stock Fund | ||||||||||
| Account Value | $ 29,466 | $ 22,695 | $ 20,988 | $ 23,669 | $ 16,274 | $ 16,519 | $ 14,852 | $ 14,186 | $ 11,039 | $ 10,664 | $ 10,000 |
| PRIMECAP Odyssey Growth Fund | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | PRIMECAP Odyssey Growth Fund | ||||||||||
| Account Value | $ 29,827 | 23,307 | 21,324 | 25,883 | 18,232 | 17,066 | 16,137 | 14,740 | 11,157 | 10,696 | 10,000 |
| PRIMECAP Odyssey Aggressive Growth Fund | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | PRIMECAP Odyssey Aggressive Growth Fund | ||||||||||
| Account Value | $ 26,975 | 21,195 | 19,443 | 27,085 | 19,985 | 17,151 | 16,380 | 15,041 | 11,344 | 10,513 | 10,000 |
| S&P 500® Index [Member] | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | S&P 500® Index | ||||||||||
| Account Value | $ 33,950 | 24,599 | 22,334 | 26,155 | 18,301 | 16,681 | 14,591 | 13,593 | 10,994 | 10,520 | 10,000 |
| S&P 500® Index [Member] | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | S&P 500® Index | ||||||||||
| Account Value | $ 33,950 | 24,599 | 22,334 | 26,155 | 18,301 | 16,681 | 14,591 | 13,593 | 10,994 | 10,520 | 10,000 |
| S&P 500® Index [Member] | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | S&P 500® Index | ||||||||||
| Account Value | $ 33,950 | $ 24,599 | $ 22,334 | $ 26,155 | $ 18,301 | $ 16,681 | $ 14,591 | $ 13,593 | $ 10,994 | $ 10,520 | $ 10,000 |
| Shareholder Report, Average Annual Return (Details) | 12 Months Ended | 60 Months Ended | 120 Months Ended |
| Oct. 31, 2024 | Oct. 31, 2024 | Oct. 31, 2024 | |
| PRIMECAP Odyssey Stock Fund | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | PRIMECAP Odyssey Stock Fund | ||
| Average Annual Return, Percent | 29.83% | 12.27% | 11.41% |
| PRIMECAP Odyssey Growth Fund | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | PRIMECAP Odyssey Growth Fund | ||
| Average Annual Return, Percent | 27.97% | 11.81% | 11.55% |
| PRIMECAP Odyssey Aggressive Growth Fund | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | PRIMECAP Odyssey Aggressive Growth Fund | ||
| Average Annual Return, Percent | 27.27% | 9.48% | 10.43% |
| S&P 500® Index [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | S&P 500® Index | ||
| Average Annual Return, Percent | 38.02% | 15.27% | 13% |
| S&P 500® Index [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | S&P 500® Index | ||
| Average Annual Return, Percent | 38.02% | 15.27% | 13% |
| S&P 500® Index [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | S&P 500® Index | ||
| Average Annual Return, Percent | 38.02% | 15.27% | 13% |
| Label | Element | Value |
| PRIMECAP Odyssey Stock Fund | Eli Lilly & Co. [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 9.50% |
| PRIMECAP Odyssey Stock Fund | AstraZeneca PLC [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 4% |
| PRIMECAP Odyssey Stock Fund | AECOM [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 3.70% |
| PRIMECAP Odyssey Stock Fund | Amgen, Inc. [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 3% |
| PRIMECAP Odyssey Stock Fund | KLA Corp. [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 2.90% |
| PRIMECAP Odyssey Stock Fund | Flex Ltd. [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 2.90% |
| PRIMECAP Odyssey Stock Fund | FedEx Corp. [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 2.90% |
| PRIMECAP Odyssey Stock Fund | Microsoft Corp. [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 2.90% |
| PRIMECAP Odyssey Stock Fund | Siemens AG [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 2.90% |
| PRIMECAP Odyssey Stock Fund | Dreyfus Treasury Securities Cash Management Fund [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 2.10% |
| PRIMECAP Odyssey Stock Fund | Health Care [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 26.10% |
| PRIMECAP Odyssey Stock Fund | Information Technology [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 22.60% |
| PRIMECAP Odyssey Stock Fund | Industrials [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 21.80% |
| PRIMECAP Odyssey Stock Fund | Financials [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 9.40% |
| PRIMECAP Odyssey Stock Fund | Consumer Discretionary [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 8.50% |
| PRIMECAP Odyssey Stock Fund | Communication Services [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 3.60% |
| PRIMECAP Odyssey Stock Fund | Energy [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 2.30% |
| PRIMECAP Odyssey Stock Fund | Consumer Staples [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 1.90% |
| PRIMECAP Odyssey Stock Fund | Materials [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 1.80% |
| PRIMECAP Odyssey Stock Fund | Cash & Other [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 2% |
| Label | Element | Value |
| PRIMECAP Odyssey Growth Fund | Eli Lilly & Co. [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 7.90% |
| PRIMECAP Odyssey Growth Fund | Alphabet, Inc. - Class A & C [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 3.80% |
| PRIMECAP Odyssey Growth Fund | Raymond James Financial, Inc. [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 3.20% |
| PRIMECAP Odyssey Growth Fund | Micron Technology, Inc. [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 3% |
| PRIMECAP Odyssey Growth Fund | AECOM [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 2.80% |
| PRIMECAP Odyssey Growth Fund | BeiGene Ltd. [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 2.40% |
| PRIMECAP Odyssey Growth Fund | Microsoft Corp. [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 2.30% |
| PRIMECAP Odyssey Growth Fund | Flex Ltd. [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 2.30% |
| PRIMECAP Odyssey Growth Fund | Amgen, Inc. [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 2.20% |
| PRIMECAP Odyssey Growth Fund | Biogen, Inc. [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 2.20% |
| PRIMECAP Odyssey Growth Fund | Health Care [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 29.60% |
| PRIMECAP Odyssey Growth Fund | Information Technology [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 23.10% |
| PRIMECAP Odyssey Growth Fund | Industrials [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 17.60% |
| PRIMECAP Odyssey Growth Fund | Consumer Discretionary [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 8.70% |
| PRIMECAP Odyssey Growth Fund | Financials [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 8.50% |
| PRIMECAP Odyssey Growth Fund | Communication Services [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 7% |
| PRIMECAP Odyssey Growth Fund | Energy [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 2.10% |
| PRIMECAP Odyssey Growth Fund | Consumer Staples [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 1.20% |
| PRIMECAP Odyssey Growth Fund | Materials [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 0.60% |
| PRIMECAP Odyssey Growth Fund | Cash & Other [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 1.60% |
| Label | Element | Value |
| PRIMECAP Odyssey Aggressive Growth Fund | Eli Lilly & Co. [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 5.60% |
| PRIMECAP Odyssey Aggressive Growth Fund | Micron Technology, Inc. [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 4.10% |
| PRIMECAP Odyssey Aggressive Growth Fund | Rhythm Pharmaceuticals, Inc. [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 3.20% |
| PRIMECAP Odyssey Aggressive Growth Fund | Alphabet, Inc. - Class A & C [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 2.80% |
| PRIMECAP Odyssey Aggressive Growth Fund | Flex Ltd. [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 2.70% |
| PRIMECAP Odyssey Aggressive Growth Fund | Sony Group Corp. [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 2.50% |
| PRIMECAP Odyssey Aggressive Growth Fund | MarketAxess Holdings, Inc. [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 2.30% |
| PRIMECAP Odyssey Aggressive Growth Fund | AECOM [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 2.30% |
| PRIMECAP Odyssey Aggressive Growth Fund | Dreyfus Treasury Securities Cash Management Fund [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 2.30% |
| PRIMECAP Odyssey Aggressive Growth Fund | Tesla, Inc. [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 2.20% |
| PRIMECAP Odyssey Aggressive Growth Fund | Information Technology [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 27.70% |
| PRIMECAP Odyssey Aggressive Growth Fund | Health Care [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 27.60% |
| PRIMECAP Odyssey Aggressive Growth Fund | Industrials [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 14.40% |
| PRIMECAP Odyssey Aggressive Growth Fund | Consumer Discretionary [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 12.60% |
| PRIMECAP Odyssey Aggressive Growth Fund | Communication Services [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 6.50% |
| PRIMECAP Odyssey Aggressive Growth Fund | Financials [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 5.90% |
| PRIMECAP Odyssey Aggressive Growth Fund | Energy [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 1.30% |
| PRIMECAP Odyssey Aggressive Growth Fund | Materials [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 1% |
| PRIMECAP Odyssey Aggressive Growth Fund | Consumer Staples [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 0.70% |
| PRIMECAP Odyssey Aggressive Growth Fund | Cash & Other [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 2.30% |
