Stock-Based Compensation - Summary of Performance Stock Estimation (Details) - Performance Stock Units |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2022 |
Jan. 01, 2022 |
Jan. 02, 2021 |
|
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
Risk-free interest rate | 1.44% | 0.29% | 0.85% |
Volatility | 67.00% | 70.00% | 39.00% |
Expected term | 3 years | 3 years | 3 years |
Summit Materials, LLC | |||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
Risk-free interest rate | 1.44% | 0.29% | 0.85% |
Volatility | 67.00% | 70.00% | 39.00% |
Expected term | 3 years | 3 years | 3 years |