v3.26.1
Shareholder Report
 6 Months Ended
Jan. 31, 2026
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSRS
Amendment Flag false
Registrant Name Lattice Strategies Trust
Entity Central Index Key 0001605803
Entity Investment Company Type N-1A
Document Period End Date Jan. 31, 2026
C000149406 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Multifactor Developed Markets (ex-US) ETF
Class Name Hartford Multifactor Developed Markets (ex-US) ETF
Trading Symbol RODM
Security Exchange Name NYSEArca
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Multifactor Developed Markets (ex-US) ETF (the "Fund") for the period of August 1, 2025 to January 31, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-etf. You can also request this information by contacting us by calling 1‑800‑456‑7526.
Additional Information Phone Number 1‑800‑456‑7526
Additional Information Website hartfordfunds.com/reports-etf
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^
Hartford Multifactor Developed Markets (ex-US) ETF $16 0.29%
^
Annualized.
Expenses Paid, Amount $ 16
Expense Ratio, Percent 0.29% [1]
Net Assets $ 1,361,730,400
Holdings Count | Holding 323
Investment Company Portfolio Turnover 27.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of January 31, 2026
Fund's net assets $1,361,730,400
Total number of portfolio holdings (excluding derivatives, if any) 323
Portfolio turnover rate (excludes in-kind creation or redemption transactions, if any) 27%
Holdings [Text Block]
Graphical Representation of Holdings
as of January 31, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
Japan 19.0 %
Canada 15.8 %
Australia 9.6 %
United Kingdom 7.3 %
United States 6.3 %
France 5.3 %
Germany 5.3 %
Israel 3.8 %
Sweden 3.0 %
Singapore 2.9 %
Other** 20.7 %
Short-Term Investments 1.5 %
Other Assets & Liabilities (0.5 )%
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000149407 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Multifactor Emerging Markets ETF
Class Name Hartford Multifactor Emerging Markets ETF
Trading Symbol ROAM
Security Exchange Name NYSEArca
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Multifactor Emerging Markets ETF (the "Fund") for the period of August 1, 2025 to January 31, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-etf. You can also request this information by contacting us by calling 1‑800‑456‑7526.
Additional Information Phone Number 1‑800‑456‑7526
Additional Information Website hartfordfunds.com/reports-etf
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^
Hartford Multifactor Emerging Markets ETF $25 0.44%
^
Annualized.
Expenses Paid, Amount $ 25
Expense Ratio, Percent 0.44% [2]
Net Assets $ 68,932,076
Holdings Count | Holding 307
Investment Company Portfolio Turnover 22.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of January 31, 2026
Fund's net assets $68,932,076
Total number of portfolio holdings (excluding derivatives, if any) 307
Portfolio turnover rate (excludes in-kind creation or redemption transactions, if any) 22%
Holdings [Text Block]
Graphical Representation of Holdings
as of January 31, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Country *
China 20.4 %
India 16.2 %
Taiwan 15.0 %
South Korea 13.4 %
Saudi Arabia 5.1 %
Brazil 5.0 %
Malaysia 3.5 %
Thailand 3.2 %
Indonesia 3.0 %
Mexico 2.9 %
Other** 12.3 %
Short-Term Investments 1.3 %
Other Assets & Liabilities (1.3 )%
Total 100.0 %
*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
**
Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000149409 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Multifactor US Equity ETF
Class Name Hartford Multifactor US Equity ETF
Trading Symbol ROUS
Security Exchange Name NYSEArca
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Multifactor US Equity ETF (the "Fund") for the period of August 1, 2025 to January 31, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-etf. You can also request this information by contacting us by calling 1‑800‑456‑7526.
Additional Information Phone Number 1‑800‑456‑7526
Additional Information Website hartfordfunds.com/reports-etf
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^
Hartford Multifactor US Equity ETF $10 0.19%
^
Annualized.
Expenses Paid, Amount $ 10
Expense Ratio, Percent 0.19% [3]
Net Assets $ 520,805,698
Holdings Count | Holding 327
Investment Company Portfolio Turnover 25.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of January 31, 2026
Fund's net assets $520,805,698
Total number of portfolio holdings (excluding derivatives, if any) 327
Portfolio turnover rate (excludes in-kind creation or redemption transactions, if any) 25%
Holdings [Text Block]
Graphical Representation of Holdings
as of January 31, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Sector *
Information Technology 32.6 %
Industrials 11.9 %
Financials 11.5 %
Health Care 10.9 %
Consumer Discretionary 8.0 %
Communication Services 7.3 %
Consumer Staples 6.3 %
Utilities 4.1 %
Materials 3.3 %
Energy 2.4 %
Real Estate 1.4 %
Short-Term Investments 0.5 %
Other Assets & Liabilities (0.2 )%
Total 100.0 %
​*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
C000149410 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Multifactor Small Cap ETF
Class Name Hartford Multifactor Small Cap ETF
Trading Symbol ROSC
Security Exchange Name NYSEArca
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Multifactor Small Cap ETF (the "Fund") for the period of August 1, 2025 to January 31, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-etf. You can also request this information by contacting us by calling 1‑800‑456‑7526.
Additional Information Phone Number 1‑800‑456‑7526
Additional Information Website hartfordfunds.com/reports-etf
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^
Hartford Multifactor Small Cap ETF $19 0.34%
^
Annualized.
Expenses Paid, Amount $ 19
Expense Ratio, Percent 0.34% [4]
Net Assets $ 36,764,362
Holdings Count | Holding 307
Investment Company Portfolio Turnover 19.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of January 31, 2026
Fund's net assets $36,764,362
Total number of portfolio holdings (excluding derivatives, if any) 307
Portfolio turnover rate (excludes in-kind creation or redemption transactions, if any) 19%
Holdings [Text Block]
Graphical Representation of Holdings
as of January 31, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Sector *
Health Care 18.0 %
Industrials 17.6 %
Financials 17.2 %
Consumer Discretionary 14.3 %
Information Technology 11.0 %
Real Estate 5.2 %
Consumer Staples 4.5 %
Energy 3.9 %
Communication Services 3.3 %
Materials 2.5 %
Utilities 2.1 %
Short-Term Investments 2.1 %
Other Assets & Liabilities (1.7 )%
Total 100.0 %
​*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
C000238811 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford Disciplined US Equity ETF
Class Name Hartford Disciplined US Equity ETF
Trading Symbol HDUS
Security Exchange Name NYSEArca
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford Disciplined US Equity ETF (the "Fund") for the period of August 1, 2025 to January 31, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-etf. You can also request this information by contacting us by calling 1‑800‑456‑7526.
Additional Information Phone Number 1‑800‑456‑7526
Additional Information Website hartfordfunds.com/reports-etf
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^
Hartford Disciplined US Equity ETF $10 0.19%
^
Annualized.
Expenses Paid, Amount $ 10
Expense Ratio, Percent 0.19% [5]
Net Assets $ 161,028,983
Holdings Count | Holding 267
Investment Company Portfolio Turnover 28.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of January 31, 2026
Fund's net assets $161,028,983
Total number of portfolio holdings (excluding derivatives, if any) 267
Portfolio turnover rate (excludes in-kind creation or redemption transactions, if any) 28%
Holdings [Text Block]
Graphical Representation of Holdings
as of January 31, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Sector *
Information Technology 30.9 %
Financials 11.5 %
Communication Services 11.0 %
Health Care 9.2 %
Industrials 9.0 %
Consumer Discretionary 8.7 %
Consumer Staples 6.2 %
Real Estate 3.8 %
Energy 3.5 %
Materials 3.5 %
Utilities 2.4 %
Short-Term Investments 0.4 %
Other Assets & Liabilities (0.1 )%
Total 100.0 %
​*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
C000246653 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford US Quality Growth ETF
Class Name Hartford US Quality Growth ETF
Trading Symbol HQGO
Security Exchange Name NASDAQ
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford US Quality Growth ETF (the "Fund") for the period of August 1, 2025 to January 31, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-etf. You can also request this information by contacting us by calling 1‑800‑456‑7526.
Additional Information Phone Number 1‑800‑456‑7526
Additional Information Website hartfordfunds.com/reports-etf
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^
Hartford US Quality Growth ETF $18 0.34%
^
Annualized.
Expenses Paid, Amount $ 18
Expense Ratio, Percent 0.34% [6]
Net Assets $ 49,935,921
Holdings Count | Holding 268
Investment Company Portfolio Turnover 19.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of January 31, 2026
Fund's net assets $49,935,921
Total number of portfolio holdings (excluding derivatives, if any) 268
Portfolio turnover rate (excludes in-kind creation or redemption transactions, if any) 19%
Holdings [Text Block]
Graphical Representation of Holdings
as of January 31, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Sector *
Information Technology 39.8 %
Consumer Discretionary 13.3 %
Communication Services 12.7 %
Financials 8.3 %
Health Care 7.8 %
Industrials 6.5 %
Consumer Staples 5.0 %
Energy 3.6 %
Materials 1.6 %
Real Estate 0.8 %
Utilities 0.5 %
Short-Term Investments 0.0 %†
Other Assets & Liabilities 0.1 %
Total 100.0 %
​*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
​†
Percentage rounds to zero.
C000246654 [Member]  
Shareholder Report [Line Items]  
Fund Name Hartford US Value ETF
Class Name Hartford US Value ETF
Trading Symbol VMAX
Security Exchange Name CboeBZX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Hartford US Value ETF (the "Fund") for the period of August 1, 2025 to January 31, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at hartfordfunds.com/reports-etf. You can also request this information by contacting us by calling 1‑800‑456‑7526.
Additional Information Phone Number 1‑800‑456‑7526
Additional Information Website hartfordfunds.com/reports-etf
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^
Hartford US Value ETF $16 0.29%
^
Annualized.
Expenses Paid, Amount $ 16
Expense Ratio, Percent 0.29% [7]
Net Assets $ 49,283,025
Holdings Count | Holding 137
Investment Company Portfolio Turnover 36.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
as of January 31, 2026
Fund's net assets $49,283,025
Total number of portfolio holdings (excluding derivatives, if any) 137
Portfolio turnover rate (excludes in-kind creation or redemption transactions, if any) 36%
Holdings [Text Block]
Graphical Representation of Holdings
as of January 31, 2026
The table below shows the investment makeup of the Fund, representing the percentage of net assets of the Fund.
Composition by Sector *
Financials 32.9 %
Health Care 11.7 %
Energy 9.9 %
Information Technology 9.7 %
Industrials 7.4 %
Communication Services 7.2 %
Utilities 6.7 %
Materials 3.9 %
Real Estate 3.8 %
Consumer Discretionary 3.7 %
Consumer Staples 3.0 %
Short-Term Investments 0.4 %
Other Assets & Liabilities (0.3 )%
Total 100.0 %
​*
For Fund compliance purposes, the Fund may not use the same classification system. These classifications are used for financial reporting purposes.
[1] Annualized.
[2] Annualized.
[3]
Annualized.
[4] Annualized.
[5] Annualized.
[6]
Annualized.
[7]
Annualized.