v3.25.2
Shareholder Report
 6 Months Ended
Jun. 30, 2025
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSRS
Amendment Flag false
Registrant Name Advisors' Inner Circle Fund II
Entity Central Index Key 0000890540
Entity Investment Company Type N-1A
Document Period End Date Jun. 30, 2025
C000015937  
Shareholder Report [Line Items]  
Fund Name Champlain Small Company Fund
Class Name Advisor Shares
Trading Symbol CIPSX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Advisor Shares of the Champlain Small Company Fund (the "Fund") for the period from January 1, 2025 to June 30, 2025.
Shareholder Report Annual or Semi-Annual Semi-Annual Shareholder Report
Additional Information [Text Block] You can find additional information about the Fund at https://cipvt.com/documents/. You can also request this information by contacting us at 1-866-773-3238. 
Additional Information Phone Number 1-866-773-3238
Additional Information Website https://cipvt.com/documents/
Expenses [Text Block]

What were the Fund costs for the last six months?

(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
Champlain Small Company Fund, Advisor Shares
$61
1.24%
Expenses Paid, Amount $ 61
Expense Ratio, Percent 1.24%
Performance Past Does Not Indicate Future [Text] Past performance is not indicative of future performance.
No Deduction of Taxes [Text Block] The table and graph presented above do not reflect the deduction of taxes a shareholder would pay on Fund distributions or the redemption of Fund shares.
AssetsNet $ 1,717,504,548
Holdings Count | Holding 82
Advisory Fees Paid, Amount $ 7,427,814
InvestmentCompanyPortfolioTurnover 28.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics as of June 30, 2025

Total Net Assets
Number of Holdings
Total Advisory Fees Paid
Portfolio Turnover Rate
$1,717,504,548
82
$7,427,814
28%
Holdings [Text Block]

Asset/Sector WeightingsFootnote Reference*

Holdings Chart
Value
Value
Materials
0.9%
Cash Equivalents
1.3%
Consumer Discretionary
9.4%
Consumer Staples
10.0%
Health Care
15.4%
Financials
18.7%
Information Technology
20.4%
Industrials
23.7%
FootnoteDescription
Footnote*
Percentages are calculated based on total net assets.
Largest Holdings [Text Block]

Top Ten Holdings

Holding Name
Percentage of Total Net AssetsFootnote Reference(A)
MSA Safety
2.4%
Pure Storage, Cl A
2.2%
ESAB
2.1%
Onestream, Cl A
2.0%
ServisFirst Bancshares
2.0%
Confluent, Cl A
2.0%
Baldwin Insurance Group, Cl A
2.0%
First Financial Bankshares
1.9%
iRhythm Technologies
1.9%
elf Beauty
1.9%
FootnoteDescription
Footnote(A)
Cash Equivalents are not shown in the top ten chart.
Material Fund Change [Text Block]

Material Fund Changes

There were no material changes during the reporting period.

 
Updated Prospectus Phone Number 1-866-773-3238
Updated Prospectus Web Address https://cipvt.com/documents/
C000173316  
Shareholder Report [Line Items]  
Fund Name Champlain Small Company Fund
Class Name Institutional Shares
Trading Symbol CIPNX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Institutional Shares of the Champlain Small Company Fund (the "Fund") for the period from January 1, 2025 to June 30, 2025.
Shareholder Report Annual or Semi-Annual Semi-Annual Shareholder Report
Additional Information [Text Block] You can find additional information about the Fund at https://cipvt.com/documents/. You can also request this information by contacting us at 1-866-773-3238. 
Additional Information Phone Number 1-866-773-3238
Additional Information Website https://cipvt.com/documents/
Expenses [Text Block]

What were the Fund costs for the last six months?

(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
Champlain Small Company Fund, Institutional Shares
$49
0.99%
Expenses Paid, Amount $ 49
Expense Ratio, Percent 0.99%
Performance Past Does Not Indicate Future [Text] Past performance is not indicative of future performance.
No Deduction of Taxes [Text Block] The table and graph presented above do not reflect the deduction of taxes a shareholder would pay on Fund distributions or the redemption of Fund shares.
AssetsNet $ 1,717,504,548
Holdings Count | Holding 82
Advisory Fees Paid, Amount $ 7,427,814
InvestmentCompanyPortfolioTurnover 28.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics as of June 30, 2025

Total Net Assets
Number of Holdings
Total Advisory Fees Paid
Portfolio Turnover Rate
$1,717,504,548
82
$7,427,814
28%
Holdings [Text Block]

Asset/Sector WeightingsFootnote Reference*

Holdings Chart
Value
Value
Materials
0.9%
Cash Equivalents
1.3%
Consumer Discretionary
9.4%
Consumer Staples
10.0%
Health Care
15.4%
Financials
18.7%
Information Technology
20.4%
Industrials
23.7%
FootnoteDescription
Footnote*
Percentages are calculated based on total net assets.
Largest Holdings [Text Block]

Top Ten Holdings

Holding Name
Percentage of Total Net AssetsFootnote Reference(A)
MSA Safety
2.4%
Pure Storage, Cl A
2.2%
ESAB
2.1%
Onestream, Cl A
2.0%
ServisFirst Bancshares
2.0%
Confluent, Cl A
2.0%
Baldwin Insurance Group, Cl A
2.0%
First Financial Bankshares
1.9%
iRhythm Technologies
1.9%
elf Beauty
1.9%
FootnoteDescription
Footnote(A)
Cash Equivalents are not shown in the top ten chart.
Material Fund Change [Text Block]

Material Fund Changes

There were no material changes during the reporting period.

 
Updated Prospectus Phone Number 1-866-773-3238
Updated Prospectus Web Address https://cipvt.com/documents/
C000065363  
Shareholder Report [Line Items]  
Fund Name Champlain Mid Cap Fund
Class Name Advisor Shares
Trading Symbol CIPMX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Advisor Shares of the Champlain Mid Cap Fund (the "Fund") for the period from January 1, 2025 to June 30, 2025.
Shareholder Report Annual or Semi-Annual Semi-Annual Shareholder Report
Additional Information [Text Block] You can find additional information about the Fund at https://cipvt.com/documents/. You can also request this information by contacting us at 1-866-773-3238. 
Additional Information Phone Number 1-866-773-3238
Additional Information Website https://cipvt.com/documents/
Expenses [Text Block]

What were the Fund costs for the last six months?

(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
Champlain Mid Cap Fund, Advisor Shares
$55
1.10%
Expenses Paid, Amount $ 55
Expense Ratio, Percent 1.10%
Performance Past Does Not Indicate Future [Text] Past performance is not indicative of future performance.
No Deduction of Taxes [Text Block] The table and graph presented above do not reflect the deduction of taxes a shareholder would pay on Fund distributions or the redemption of Fund shares.
AssetsNet $ 3,926,690,969
Holdings Count | Holding 73
Advisory Fees Paid, Amount $ 14,654,708
InvestmentCompanyPortfolioTurnover 23.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics as of June 30, 2025

Total Net Assets
Number of Holdings
Total Advisory Fees Paid
Portfolio Turnover Rate
$3,926,690,969
73
$14,654,708
23%
Holdings [Text Block]

Asset/Sector WeightingsFootnote Reference*

Holdings Chart
Value
Value
Communication Services
1.0%
Cash Equivalents
2.1%
Consumer Discretionary
6.2%
Consumer Staples
8.7%
Financials
15.9%
Health Care
18.9%
Information Technology
22.5%
Industrials
24.3%
FootnoteDescription
Footnote*
Percentages are calculated based on total net assets.
Largest Holdings [Text Block]

Top Ten Holdings

Holding Name
Percentage of Total Net AssetsFootnote Reference(A)
AMETEK
2.2%
Xylem
2.2%
Pure Storage, Cl A
2.0%
Confluent, Cl A
2.0%
elf Beauty
1.9%
Workday, Cl A
1.9%
Nutanix, Cl A
1.9%
IDEX
1.9%
Nordson
1.9%
Edwards Lifesciences
1.8%
FootnoteDescription
Footnote(A)
Cash Equivalents are not shown in the top ten chart.
Material Fund Change [Text Block]

Material Fund Changes

There were no material changes during the reporting period.

 
Updated Prospectus Phone Number 1-866-773-3238
Updated Prospectus Web Address https://cipvt.com/documents/
C000096284  
Shareholder Report [Line Items]  
Fund Name Champlain Mid Cap Fund
Class Name Institutional Shares
Trading Symbol CIPIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Institutional Shares of the Champlain Mid Cap Fund (the "Fund") for the period from January 1, 2025 to June 30, 2025.
Shareholder Report Annual or Semi-Annual Semi-Annual Shareholder Report
Additional Information [Text Block] You can find additional information about the Fund at https://cipvt.com/documents/. You can also request this information by contacting us at 1-866-773-3238. 
Additional Information Phone Number 1-866-773-3238
Additional Information Website https://cipvt.com/documents/
Expenses [Text Block]

What were the Fund costs for the last six months?

(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
Champlain Mid Cap Fund, Institutional Shares
$43
0.85%
Expenses Paid, Amount $ 43
Expense Ratio, Percent 0.85%
Performance Past Does Not Indicate Future [Text] Past performance is not indicative of future performance.
No Deduction of Taxes [Text Block] The table and graph presented above do not reflect the deduction of taxes a shareholder would pay on Fund distributions or the redemption of Fund shares.
AssetsNet $ 3,926,690,969
Holdings Count | Holding 73
Advisory Fees Paid, Amount $ 14,654,708
InvestmentCompanyPortfolioTurnover 23.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics as of June 30, 2025

Total Net Assets
Number of Holdings
Total Advisory Fees Paid
Portfolio Turnover Rate
$3,926,690,969
73
$14,654,708
23%
Holdings [Text Block]

Asset/Sector WeightingsFootnote Reference*

Holdings Chart
Value
Value
Communication Services
1.0%
Cash Equivalents
2.1%
Consumer Discretionary
6.2%
Consumer Staples
8.7%
Financials
15.9%
Health Care
18.9%
Information Technology
22.5%
Industrials
24.3%
FootnoteDescription
Footnote*
Percentages are calculated based on total net assets.
Largest Holdings [Text Block]

Top Ten Holdings

Holding Name
Percentage of Total Net AssetsFootnote Reference(A)
AMETEK
2.2%
Xylem
2.2%
Pure Storage, Cl A
2.0%
Confluent, Cl A
2.0%
elf Beauty
1.9%
Workday, Cl A
1.9%
Nutanix, Cl A
1.9%
IDEX
1.9%
Nordson
1.9%
Edwards Lifesciences
1.8%
FootnoteDescription
Footnote(A)
Cash Equivalents are not shown in the top ten chart.
Material Fund Change [Text Block]

Material Fund Changes

There were no material changes during the reporting period.

 
Updated Prospectus Phone Number 1-866-773-3238
Updated Prospectus Web Address https://cipvt.com/documents/
C000245657  
Shareholder Report [Line Items]  
Fund Name Champlain Strategic Focus Fund
Class Name Institutional Shares
Trading Symbol CIPTX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Institutional Shares of the Champlain Strategic Focus Fund (the "Fund") for the period from January 1, 2025 to June 30, 2025.
Shareholder Report Annual or Semi-Annual Semi-Annual Shareholder Report
Additional Information [Text Block] You can find additional information about the Fund at https://cipvt.com/documents/. You can also request this information by contacting us at 1-866-773-3238. 
Additional Information Phone Number 1-866-773-3238
Additional Information Website https://cipvt.com/documents/
Expenses [Text Block]

What were the Fund costs for the last six months?

(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
Champlain Strategic Focus Fund, Institutional Shares
$43
0.85%
Expenses Paid, Amount $ 43
Expense Ratio, Percent 0.85%
Performance Past Does Not Indicate Future [Text] Past performance is not indicative of future performance.
No Deduction of Taxes [Text Block] The table and graph presented above do not reflect the deduction of taxes a shareholder would pay on Fund distributions or the redemption of Fund shares.
AssetsNet $ 4,039,516
Holdings Count | Holding 28
Advisory Fees Paid, Amount $ 0
InvestmentCompanyPortfolioTurnover 21.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics as of June 30, 2025

Total Net Assets
Number of Holdings
Total Advisory Fees Paid
Portfolio Turnover Rate
$4,039,516
28
$-
21%
Holdings [Text Block]

Asset/Sector WeightingsFootnote Reference*

Holdings Chart
Value
Value
Cash Equivalent
1.8%
Consumer Staples
3.9%
Consumer Discretionary
3.9%
Financials
9.6%
Health Care
17.9%
Industrials
22.3%
Information Technology
40.5%
FootnoteDescription
Footnote*
Percentages are calculated based on total net assets.
Largest Holdings [Text Block]

Top Ten Holdings

Holding Name
Percentage of Total Net AssetsFootnote Reference(A)
Pure Storage, Cl A
7.4%
Veeva Systems, Cl A
6.7%
Zscaler
6.2%
Okta, Cl A
4.9%
Mettler Toledo International
4.5%
Datadog, Cl A
4.5%
Fastenal
4.1%
MSCI, Cl A
4.0%
Ulta Beauty
3.9%
elf Beauty
3.9%
FootnoteDescription
Footnote(A)
Cash Equivalents are not shown in the top ten chart.
Material Fund Change [Text Block]

Material Fund Changes

There were no material changes during the reporting period.

 
Updated Prospectus Phone Number 1-866-773-3238
Updated Prospectus Web Address https://cipvt.com/documents/