This semi-annual shareholder report contains important information about U.S. Large-Cap Core Fund (the "fund") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find the fund’s prospectus, financial information on Form N‑CSR (which includes required tax information for dividends), holdings, proxy voting information, and other information atwww.troweprice.com/prospectus. You can also request this information without charge by contacting T. Rowe Price at 1‑800‑638‑5660 or info@troweprice.com or contacting your intermediary.

Material Fund Change Notice [Text Block]

Additional Information Phone Number

1‑800‑638‑5660

Additional Information Email

<span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 13.3333px; font-weight: 400; grid-area: auto; line-height: 17.3333px; margin: 0px; overflow: visible; text-align: justify; text-align-last: left; white-space-collapse: preserve-breaks;">info@troweprice.com</span>

Additional Information Website

www.troweprice.com/prospectus

Expenses [Text Block]

What were the fund costs for the last six months? (based on a hypothetical $10,000 investment)

Table Summary
	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
U.S. Large-Cap Core Fund - Investor Class	$33	0.64%

Expenses Paid, Amount

$ 33

Expense Ratio, Percent

0.64%

Updated Performance Information Location [Text Block]

If you invest directly with T. Rowe Price, you can elect to receive future shareholder reports or other important documents through electronic delivery by enrolling at www.troweprice.com/paperless. If you invest through a financial intermediary such as an investment advisor, a bank, retirement plan sponsor or a brokerage firm, please contact that organization and ask if it can provide electronic delivery.

Visit www.troweprice.com/en/us/market-data-disclosures for additional legal notices & disclaimers.

AssetsNet

$ 17,990,106,000

Holdings Count | Holding

InvestmentCompanyPortfolioTurnover

28.50%

Additional Fund Statistics [Text Block]

What are some fund statistics?

Fund Statistics

Table Summary
Total Net Assets (000s)	$17,990,106
Number of Portfolio Holdings	79

Additional Fund Statistics Significance or Limits [Text Block]

Table Summary

Portfolio Turnover Rate	28.5%

Holdings [Text Block]

Sector Allocation (as a % of Net Assets)

Table Summary
Information Technology	33.5%
Financials	12.9
Health Care	11.2
Communication Services	9.4
Industrials & Business Services	9.2
Consumer Discretionary	9.1
Consumer Staples	4.0
Materials	3.8
Energy	3.7
Other	3.2

Largest Holdings [Text Block]

Top Ten Holdings (as a % of Net Assets)

Table Summary
NVIDIA	7.9%
Apple	7.1
Alphabet	6.8
Microsoft	3.7
Broadcom	3.5
Amazon.com	2.8
Visa	2.5
Advanced Micro Devices	2.4
JPMorgan Chase	2.0
UnitedHealth Group	1.8

Material Fund Change [Text Block]

Updated Prospectus Web Address

www.troweprice.com/paperless

C000078271

Shareholder Report [Line Items]

Fund Name

U.S. Large-Cap Core Fund

Class Name

Advisor Class

Trading Symbol

PAULX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about U.S. Large-Cap Core Fund (the "fund") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

Material Fund Change Notice [Text Block]

Additional Information Phone Number

1‑800‑638‑5660

Additional Information Email

Additional Information Website

www.troweprice.com/prospectus

Expenses [Text Block]

What were the fund costs for the last six months? (based on a hypothetical $10,000 investment)

Table Summary
	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
U.S. Large-Cap Core Fund - Advisor Class	$49	0.95%

Expenses Paid, Amount

$ 49

Expense Ratio, Percent

0.95%

Updated Performance Information Location [Text Block]

Visit www.troweprice.com/en/us/market-data-disclosures for additional legal notices & disclaimers.

AssetsNet

$ 17,990,106,000

Holdings Count | Holding

InvestmentCompanyPortfolioTurnover

28.50%

Additional Fund Statistics [Text Block]

What are some fund statistics?

Fund Statistics

Table Summary
Total Net Assets (000s)	$17,990,106
Number of Portfolio Holdings	79

Additional Fund Statistics Significance or Limits [Text Block]

Table Summary

Portfolio Turnover Rate	28.5%

Holdings [Text Block]

Sector Allocation (as a % of Net Assets)

Table Summary
Information Technology	33.5%
Financials	12.9
Health Care	11.2
Communication Services	9.4
Industrials & Business Services	9.2
Consumer Discretionary	9.1
Consumer Staples	4.0
Materials	3.8
Energy	3.7
Other	3.2

Largest Holdings [Text Block]

Top Ten Holdings (as a % of Net Assets)

Table Summary
NVIDIA	7.9%
Apple	7.1
Alphabet	6.8
Microsoft	3.7
Broadcom	3.5
Amazon.com	2.8
Visa	2.5
Advanced Micro Devices	2.4
JPMorgan Chase	2.0
UnitedHealth Group	1.8

Material Fund Change [Text Block]

Updated Prospectus Web Address

www.troweprice.com/paperless

C000177203

Shareholder Report [Line Items]

Fund Name

U.S. Large-Cap Core Fund

Class Name

I Class

Trading Symbol

RCLIX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about U.S. Large-Cap Core Fund (the "fund") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

Material Fund Change Notice [Text Block]

Additional Information Phone Number

1‑800‑638‑5660

Additional Information Email

Additional Information Website

www.troweprice.com/prospectus

Expenses [Text Block]

What were the fund costs for the last six months? (based on a hypothetical $10,000 investment)

Table Summary
	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
U.S. Large-Cap Core Fund - I Class	$29	0.57%

Expenses Paid, Amount

$ 29

Expense Ratio, Percent

0.57%

Updated Performance Information Location [Text Block]

Visit www.troweprice.com/en/us/market-data-disclosures for additional legal notices & disclaimers.

AssetsNet

$ 17,990,106,000

Holdings Count | Holding

InvestmentCompanyPortfolioTurnover

28.50%

Additional Fund Statistics [Text Block]

What are some fund statistics?

Fund Statistics

Table Summary
Total Net Assets (000s)	$17,990,106
Number of Portfolio Holdings	79

Additional Fund Statistics Significance or Limits [Text Block]

Table Summary

Portfolio Turnover Rate	28.5%

Holdings [Text Block]

Sector Allocation (as a % of Net Assets)

Table Summary
Information Technology	33.5%
Financials	12.9
Health Care	11.2
Communication Services	9.4
Industrials & Business Services	9.2
Consumer Discretionary	9.1
Consumer Staples	4.0
Materials	3.8
Energy	3.7
Other	3.2

Largest Holdings [Text Block]

Top Ten Holdings (as a % of Net Assets)

Table Summary
NVIDIA	7.9%
Apple	7.1
Alphabet	6.8
Microsoft	3.7
Broadcom	3.5
Amazon.com	2.8
Visa	2.5
Advanced Micro Devices	2.4
JPMorgan Chase	2.0
UnitedHealth Group	1.8

Material Fund Change [Text Block]

Updated Prospectus Web Address

www.troweprice.com/paperless

C000219317

Shareholder Report [Line Items]

Fund Name

U.S. Large-Cap Core Fund

Class Name

Z Class

Trading Symbol

TRZLX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about U.S. Large-Cap Core Fund (the "fund") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

Material Fund Change Notice [Text Block]

Additional Information Phone Number

1‑800‑638‑5660

Additional Information Email

Additional Information Website

www.troweprice.com/prospectus

Expenses [Text Block]

What were the fund costs for the last six months? (based on a hypothetical $10,000 investment)

Table Summary
	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
U.S. Large-Cap Core Fund - Z Class	$0	0.00%

Expenses Paid, Amount

$ 0

Expense Ratio, Percent

0.00%

Updated Performance Information Location [Text Block]

Visit www.troweprice.com/en/us/market-data-disclosures for additional legal notices & disclaimers.

AssetsNet

$ 17,990,106,000

Holdings Count | Holding

InvestmentCompanyPortfolioTurnover

28.50%

Additional Fund Statistics [Text Block]

What are some fund statistics?

Fund Statistics

Table Summary
Total Net Assets (000s)	$17,990,106
Number of Portfolio Holdings	79

Additional Fund Statistics Significance or Limits [Text Block]

Table Summary

Portfolio Turnover Rate	28.5%

Holdings [Text Block]

Sector Allocation (as a % of Net Assets)

Table Summary
Information Technology	33.5%
Financials	12.9
Health Care	11.2
Communication Services	9.4
Industrials & Business Services	9.2
Consumer Discretionary	9.1
Consumer Staples	4.0
Materials	3.8
Energy	3.7
Other	3.2

Largest Holdings [Text Block]

Top Ten Holdings (as a % of Net Assets)

Table Summary
NVIDIA	7.9%
Apple	7.1
Alphabet	6.8
Microsoft	3.7
Broadcom	3.5
Amazon.com	2.8
Visa	2.5
Advanced Micro Devices	2.4
JPMorgan Chase	2.0
UnitedHealth Group	1.8

Material Fund Change [Text Block]

Updated Prospectus Web Address