v3.24.3

Financial Highlights - Per Share Operating Performance (Parenthetical) (Detail) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
ProShares Short VIX Short-Term Futures ETF [Member] |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |
Expense ratio, excluding non-recurring fees and expenses | 0.95% | 0.95% | 0.95% | 0.95%
ProShares Ultra Bloomberg Crude Oil [Member] |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |
Expense ratio, excluding non-recurring fees and expenses | 0.95% | 0.95% | 0.95% | 0.95%
ProShares Ultra Bloomberg Natural Gas [Member] |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |
Expense ratio, excluding non-recurring fees and expenses | 0.95% | 0.95% | 0.95% | 0.95%
ProShares Ultra Euro [Member] |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |
Expense ratio, excluding non-recurring fees and expenses | 0.95% | 0.95% | 0.95% | 0.95%
ProShares Ultra Gold [Member] |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |
Expense ratio, excluding non-recurring fees and expenses | 0.95% | 0.95% | 0.95% | 0.95%
ProShares Ultra Silver [Member] |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |
Expense ratio, excluding non-recurring fees and expenses | 0.95% | 0.95% | 0.95% | 0.95%
ProShares Ultra VIX Short-Term Futures ETF [Member] |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |
Expense ratio, excluding non-recurring fees and expenses | 0.95% | 0.95% | 0.95% | 0.95%
ProShares Ultra Yen [Member] |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |
Expense ratio, excluding non-recurring fees and expenses | 0.95% | 0.95% | 0.95% | 0.95%
ProShares UltraShort Bloomberg Crude Oil [Member] |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |
Expense ratio, excluding non-recurring fees and expenses | 0.95% | 0.95% | 0.95% | 0.95%
ProShares UltraShort Bloomberg Natural Gas [Member] |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |
Expense ratio, excluding non-recurring fees and expenses | 0.95% | 0.95% | 0.95% | 0.95%
ProShares UltraShort Euro [Member] |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |
Expense ratio, excluding non-recurring fees and expenses | 0.95% | 0.95% | 0.95% | 0.95%
ProShares UltraShort Gold [Member] |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |
Expense ratio, excluding non-recurring fees and expenses | 0.95% | 0.95% | 0.95% | 0.95%
ProShares UltraShort Silver [Member] |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |
Expense ratio, excluding non-recurring fees and expenses | 0.95% | 0.95% | 0.95% | 0.95%
ProShares UltraShort Yen [Member] |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |
Expense ratio, excluding non-recurring fees and expenses | 0.95% | 0.95% | 0.95% | 0.95%
ProShares VIX Mid-Term Futures ETF [Member] |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |
Expense ratio, excluding non-recurring fees and expenses | 0.85% | 0.85% | 0.85% | 0.85%
ProShares VIX Short-Term Futures ETF [Member] |  |  |  |
Investment Company, Financial Highlights [Line Items] |  |  |  |
Expense ratio, excluding non-recurring fees and expenses | 0.85% | 0.85% | 0.85% | 0.85%

X
- Definition Represents Percentage, after deduction of fee waiver and before deduction of Nonrecurring fees and expenses average net assets. + References No definition available. + Details
Name: | ck0001415311_InvestmentCompanyExpenseRatioExcludingNonrecurringFeesAndExpenses
Namespace Prefix: | ck0001415311_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 205 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478494/946-205-50-7 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 205 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478494/946-205-50-7 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 205 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478494/946-205-50-7 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 205 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478494/946-205-50-7 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 205 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478494/946-205-50-7 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 205 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478494/946-205-50-7 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 205 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Subparagraph (g) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478494/946-205-50-7 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 205 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Subparagraph (h) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478494/946-205-50-7 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 205 -Name Accounting Standards Codification -Section 50 -Paragraph 27 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478494/946-205-50-27 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 205 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478494/946-205-50-2 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 205 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478494/946-205-50-3 + Details
Name: | us-gaap_InvestmentCompanyFinancialHighlightsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=ck0001415311_ProsharesShortVixShortTermFuturesEtfMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=ck0001415311_ProsharesUltraBloombergCrudeOilMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=ck0001415311_ProsharesUltraBloombergNaturalGasMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=ck0001415311_ProsharesUltraEuroMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=ck0001415311_ProsharesUltraGoldMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=ck0001415311_ProsharesUltraSilverMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=ck0001415311_ProsharesUltraYenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=ck0001415311_ProsharesUltraShortBloombergCrudeOilMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=ck0001415311_ProsharesUltraShortBloombergNaturalGasMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=ck0001415311_ProsharesUltraShortEuroMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=ck0001415311_ProsharesUltraShortGoldMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=ck0001415311_ProsharesUltraShortSilverMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=ck0001415311_ProsharesUltraShortYenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=ck0001415311_ProsharesVixMidTermFuturesEtfMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=ck0001415311_ProsharesVixShortTermFuturesEtfMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |