XML 70 R2.htm IDEA: XBRL DOCUMENT
v3.23.3

Pay vs Performance Disclosure Unit_pure in Millions | 12 Months Ended
--- | ---
Aug. 31, 2023 USD ($) | Aug. 31, 2022 USD ($) | Aug. 31, 2021 USD ($)
Pay vs Performance Disclosure [Table] |  |  |
Pay vs Performance [Table Text Block] | Pay Versus Performance In accordance with rules adopted by the SEC pursuant to the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010, we provide the following disclosure regarding executive compensation for our principal executive officer (“PEO”) and non-PEO NEOs for the fiscal years listed below and certain measures of Company performance for such periods. The Compensation Committee did not consider the pay versus performance disclosure below in making its pay decisions for any of the years shown.
Year |  | Summary Compensation Table Total for PEO (1) ($) |  | Compensation Actually Paid to PEO (1),(2),(3) ($) |  | Average Summary Compensation Table Total for Non-PEO NEOs (1) ($) |  | Average Compensation Actually Paid to Non-PEO NEOs (1),(2),(3) ($) |  | Value of Initial Fixed $100 Investment Based on: (4) |  | Net Income ($ Millions) |  | Adjusted EBITDA (Comp) (5) ($ Millions)
| Company TSR ($) |  | Peer Group TSR ($)
2023 |  |  | $ | 9,603,625 |  |  |  | $ | 20,834,770 |  |  |  | $ | 2,648,855 |  |  |  | $ | 4,195,063 |  |  |  | $ | 282.94 |  |  |  | $ | 376.11 |  |  |  | $ | 859.8 |  |  |  | $ | 1,367 |
2022 |  |  | $ | 10,207,641 |  |  |  | $ | 20,007,324 |  |  |  | $ | 2,768,137 |  |  |  | $ | 4,201,966 |  |  |  | $ | 201.02 |  |  |  | $ | 305.08 |  |  |  | $ | 1,217.3 |  |  |  | $ | 1,472 |
2021 |  |  | $ | 9,054,252 |  |  |  | $ | 19,888,683 |  |  |  | $ | 2,357,005 |  |  |  | $ | 3,608,516 |  |  |  | $ | 159.38 |  |  |  | $ | 265.38 |  |  |  | $ | 412.9 |  |  |  | $ | 762 |
| (1) | Barbara R. Smith was our PEO for each year presented. The individuals comprising the non-PEO NEOs for each year presented are listed below.
2021 |  | 2022 |  | 2023
Paul J. Lawrence |  | Paul J. Lawrence |  | Peter R. Matt
Jody K. Absher |  | Ty L. Garrison |  | Paul J. Lawrence
Jennifer J. Durbin |  | Jody K. Absher |  | Ty L. Garrison
Tracy L. Porter |  | Jennifer J. Durbin |  | Jody K. Absher
|  | Tracy L. Porter |  | Jennifer J. Durbin
| (2) | The amounts shown for Compensation Actually Paid have been calculated in accordance with Item 402(v) of Regulation S-K and do not reflect compensation actually earned, realized, or received by the Company’s NEOs. These amounts reflect the Summary Compensation Table Total with certain adjustments as described in footnote 3 below.
| (3) | Compensation Actually Paid reflects the exclusions and inclusions of certain amounts for the PEO and the non-PEO NEOs as set forth below. Equity values are calculated in accordance with FASB ASC Topic 718. Amounts in the Exclusion of Stock Awards column are the amounts from the Stock Awards column set forth in the Summary Compensation Table.
Year |  | Summary Compensation Table Total for PEO ($) |  | Exclusion of Stock Awards for PEO ($) |  | Inclusion of Equity Values for PEO ($) |  | Compensation Actually Paid to PEO ($)
2023 |  |  | $ | 9,603,625 |  |  |  | $ | (6,184,205 | ) |  |  | $ | 17,415,350 |  |  |  | $ | 20,834,770 |
2022 |  |  | $ | 10,207,641 |  |  |  | $ | (5,825,836 | ) |  |  | $ | 15,625,519 |  |  |  | $ | 20,007,324 |
2021 |  |  | $ | 9,054,252 |  |  |  | $ | (4,859,240 | ) |  |  | $ | 15,693,671 |  |  |  | $ | 19,888,683 |
Year |  | Average Summary Compensation Table Total for Non-PEO NEOs ($) |  | Average Exclusion of Stock Awards for Non-PEO NEOs ($) |  | Average Inclusion of Equity Values for Non-PEO NEOs ($) |  | Average Compensation Actually Paid to Non-PEO NEOs ($)
2023 |  |  | $ | 2,648,855 |  |  |  | $ | (1,503,482 | ) |  |  | $ | 3,049,690 |  |  |  | $ | 4,195,063 |
2022 |  |  | $ | 2,768,137 |  |  |  | $ | (1,115,542 | ) |  |  | $ | 2,549,371 |  |  |  | $ | 4,201,966 |
2021 |  |  | $ | 2,357,005 |  |  |  | $ | (917,366 | ) |  |  | $ | 2,168,877 |  |  |  | $ | 3,608,516 |
The amounts in the Inclusion of Equity Values in the tables above are derived from the amounts set forth in the following tables:
Year |  | Year-End Fair Value of Equity Awards Granted During Year That Remained Unvested as of Last Day of Year for PEO ($) |  | Change in Fair Value from Last Day of Prior Year to Last Day of Year of Unvested Equity Awards for PEO ($) |  | Vesting-Date Fair Value of Equity Awards Granted During Year that Vested During Year for PEO ($) |  | Change in Fair Value from Last Day of Prior Year to Vesting Date of Unvested Equity Awards that Vested During Year for PEO ($) |  | Fair Value at Last Day of Prior Year of Equity Awards Forfeited During Year for PEO ($) |  | Value of Dividends or Other Earnings Paid on Equity Awards Not Otherwise Included for PEO ($) |  | Total - Inclusion of Equity Values for PEO ($)
2023 |  |  | $ | 5,426,209 |  |  |  | $ | 2,054,000 |  |  |  | $ | 2,762,628 |  |  |  | $ | 7,172,513 |  |  |  | $ | — |  |  |  | $ | — |  |  |  | $ | 17,415,350 |
2022 |  |  | $ | 4,866,271 |  |  |  | $ | 1,133,400 |  |  |  | $ | 2,921,104 |  |  |  | $ | 6,704,744 |  |  |  | $ | — |  |  |  | $ | — |  |  |  | $ | 15,625,519 |
2021 |  |  | $ | 3,837,861 |  |  |  | $ | 2,213,685 |  |  |  | $ | 2,687,565 |  |  |  | $ | 6,954,560 |  |  |  | $ | — |  |  |  | $ | — |  |  |  | $ | 15,693,671 |
Year |  | Average Year-End Fair Value of Equity Awards Granted During Year That Remained Unvested as of Last Day of Year for Non-PEO NEOs ($) |  | Average Change in Fair Value from Last Day of Prior Year to Last Day of Year of Unvested Equity Awards for Non-PEO NEOs ($) |  | Average Vesting-Date Fair Value of Equity Awards Granted During Year that Vested During Year for Non-PEO NEOs ($) |  | Average Change in Fair Value from Last Day of Prior Year to Vesting Date of Unvested Equity Awards that Vested During Year for Non-PEO NEOs ($) |  | Average Fair Value at Last Day of Prior Year of Equity Awards Forfeited During Year for Non-PEO NEOs ($) |  | Average Value of Dividends or Other Earnings Paid on Equity Awards Not Otherwise Included for Non-PEO NEOs ($) |  | Total - Average Inclusion of Equity Values for Non-PEO NEOs ($)
2023 |  |  | $ | 2,002,411 |  |  |  | $ | 388,349 |  |  |  | $ | — |  |  |  | $ | 658,930 |  |  |  | $ | — |  |  |  | $ | — |  |  |  | $ | 3,049,690 |
2022 |  |  | $ | 1,216,609 |  |  |  | $ | 261,708 |  |  |  | $ | 253,162 |  |  |  | $ | 817,892 |  |  |  | $ | — |  |  |  | $ | — |  |  |  | $ | 2,549,371 |
2021 |  |  | $ | 922,229 |  |  |  | $ | 348,646 |  |  |  | $ | 284,433 |  |  |  | $ | 613,569 |  |  |  | $ | — |  |  |  | $ | — |  |  |  | $ | 2,168,877 |
| (4) | The Peer Group TSR set forth in this table utilizes the S&P 500 Steel Index which we also utilize in the stock performance graph required by Item 201(e) of Regulation S-K. The amounts reported reflect the cumulative TSR of the Company and the S&P 500 Steel Index as of August 31 of each year presented assuming an initial $100 investment on August 31, 2020. Historical stock performance is not necessarily indicative of future stock performance.
| (5) | We determined Adjusted EBITDA (Comp) to be the most important financial performance measure used to link Company performance to Compensation Actually Paid to our PEO and non-PEO NEOs in fiscal year 2023. We define Adjusted EBITDA (Comp) as the sum of the Company’s net earnings before interest expense, income taxes, depreciation and amortization expense, asset impairments, and amortization of acquired unfavorable contract backlog. Adjusted EBITDA (Comp) is a non-GAAP financial measure. This performance measure may not have been the most important financial performance measure for fiscal years 2022 and 2021 and we may determine a different financial performance measure to be the most important financial performance measure in future years.
Company Selected Measure Name | Adjusted EBITDA (Comp) |  |
Named Executive Officers, Footnote [Text Block] |
| (1) | Barbara R. Smith was our PEO for each year presented. The individuals comprising the non-PEO NEOs for each year presented are listed below.
2021 |  | 2022 |  | 2023
Paul J. Lawrence |  | Paul J. Lawrence |  | Peter R. Matt
Jody K. Absher |  | Ty L. Garrison |  | Paul J. Lawrence
Jennifer J. Durbin |  | Jody K. Absher |  | Ty L. Garrison
Tracy L. Porter |  | Jennifer J. Durbin |  | Jody K. Absher
|  | Tracy L. Porter |  | Jennifer J. Durbin
Peer Group Issuers, Footnote [Text Block] | The Peer Group TSR set forth in this table utilizes the S&P 500 Steel Index which we also utilize in the stock performance graph required by Item 201(e) of Regulation S-K. The amounts reported reflect the cumulative TSR of the Company and the S&P 500 Steel Index as of August 31 of each year presented assuming an initial $100 investment on August 31, 2020. Historical stock performance is not necessarily indicative of future stock performance. |  |
PEO Total Compensation Amount | $ 9,603,625 | $ 10,207,641 | $ 9,054,252
PEO Actually Paid Compensation Amount | $ 20,834,770 | 20,007,324 | 19,888,683
Adjustment To PEO Compensation, Footnote [Text Block] |
| (3) | Compensation Actually Paid reflects the exclusions and inclusions of certain amounts for the PEO and the non-PEO NEOs as set forth below. Equity values are calculated in accordance with FASB ASC Topic 718. Amounts in the Exclusion of Stock Awards column are the amounts from the Stock Awards column set forth in the Summary Compensation Table.
Year |  | Summary Compensation Table Total for PEO ($) |  | Exclusion of Stock Awards for PEO ($) |  | Inclusion of Equity Values for PEO ($) |  | Compensation Actually Paid to PEO ($)
2023 |  |  | $ | 9,603,625 |  |  |  | $ | (6,184,205 | ) |  |  | $ | 17,415,350 |  |  |  | $ | 20,834,770 |
2022 |  |  | $ | 10,207,641 |  |  |  | $ | (5,825,836 | ) |  |  | $ | 15,625,519 |  |  |  | $ | 20,007,324 |
2021 |  |  | $ | 9,054,252 |  |  |  | $ | (4,859,240 | ) |  |  | $ | 15,693,671 |  |  |  | $ | 19,888,683 |
The amounts in the Inclusion of Equity Values in the tables above are derived from the amounts set forth in the following tables:
Year |  | Year-End Fair Value of Equity Awards Granted During Year That Remained Unvested as of Last Day of Year for PEO ($) |  | Change in Fair Value from Last Day of Prior Year to Last Day of Year of Unvested Equity Awards for PEO ($) |  | Vesting-Date Fair Value of Equity Awards Granted During Year that Vested During Year for PEO ($) |  | Change in Fair Value from Last Day of Prior Year to Vesting Date of Unvested Equity Awards that Vested During Year for PEO ($) |  | Fair Value at Last Day of Prior Year of Equity Awards Forfeited During Year for PEO ($) |  | Value of Dividends or Other Earnings Paid on Equity Awards Not Otherwise Included for PEO ($) |  | Total - Inclusion of Equity Values for PEO ($)
2023 |  |  | $ | 5,426,209 |  |  |  | $ | 2,054,000 |  |  |  | $ | 2,762,628 |  |  |  | $ | 7,172,513 |  |  |  | $ | — |  |  |  | $ | — |  |  |  | $ | 17,415,350 |
2022 |  |  | $ | 4,866,271 |  |  |  | $ | 1,133,400 |  |  |  | $ | 2,921,104 |  |  |  | $ | 6,704,744 |  |  |  | $ | — |  |  |  | $ | — |  |  |  | $ | 15,625,519 |
2021 |  |  | $ | 3,837,861 |  |  |  | $ | 2,213,685 |  |  |  | $ | 2,687,565 |  |  |  | $ | 6,954,560 |  |  |  | $ | — |  |  |  | $ | — |  |  |  | $ | 15,693,671 |
Non-PEO NEO Average Total Compensation Amount | $ 2,648,855 | 2,768,137 | 2,357,005
Non-PEO NEO Average Compensation Actually Paid Amount | $ 4,195,063 | 4,201,966 | 3,608,516
Adjustment to Non-PEO NEO Compensation Footnote [Text Block] |
| (3) | Compensation Actually Paid reflects the exclusions and inclusions of certain amounts for the PEO and the non-PEO NEOs as set forth below. Equity values are calculated in accordance with FASB ASC Topic 718. Amounts in the Exclusion of Stock Awards column are the amounts from the Stock Awards column set forth in the Summary Compensation Table.
Year |  | Average Summary Compensation Table Total for Non-PEO NEOs ($) |  | Average Exclusion of Stock Awards for Non-PEO NEOs ($) |  | Average Inclusion of Equity Values for Non-PEO NEOs ($) |  | Average Compensation Actually Paid to Non-PEO NEOs ($)
2023 |  |  | $ | 2,648,855 |  |  |  | $ | (1,503,482 | ) |  |  | $ | 3,049,690 |  |  |  | $ | 4,195,063 |
2022 |  |  | $ | 2,768,137 |  |  |  | $ | (1,115,542 | ) |  |  | $ | 2,549,371 |  |  |  | $ | 4,201,966 |
2021 |  |  | $ | 2,357,005 |  |  |  | $ | (917,366 | ) |  |  | $ | 2,168,877 |  |  |  | $ | 3,608,516 |
The amounts in the Inclusion of Equity Values in the tables above are derived from the amounts set forth in the following tables:
Year |  | Average Year-End Fair Value of Equity Awards Granted During Year That Remained Unvested as of Last Day of Year for Non-PEO NEOs ($) |  | Average Change in Fair Value from Last Day of Prior Year to Last Day of Year of Unvested Equity Awards for Non-PEO NEOs ($) |  | Average Vesting-Date Fair Value of Equity Awards Granted During Year that Vested During Year for Non-PEO NEOs ($) |  | Average Change in Fair Value from Last Day of Prior Year to Vesting Date of Unvested Equity Awards that Vested During Year for Non-PEO NEOs ($) |  | Average Fair Value at Last Day of Prior Year of Equity Awards Forfeited During Year for Non-PEO NEOs ($) |  | Average Value of Dividends or Other Earnings Paid on Equity Awards Not Otherwise Included for Non-PEO NEOs ($) |  | Total - Average Inclusion of Equity Values for Non-PEO NEOs ($)
2023 |  |  | $ | 2,002,411 |  |  |  | $ | 388,349 |  |  |  | $ | — |  |  |  | $ | 658,930 |  |  |  | $ | — |  |  |  | $ | — |  |  |  | $ | 3,049,690 |
2022 |  |  | $ | 1,216,609 |  |  |  | $ | 261,708 |  |  |  | $ | 253,162 |  |  |  | $ | 817,892 |  |  |  | $ | — |  |  |  | $ | — |  |  |  | $ | 2,549,371 |
2021 |  |  | $ | 922,229 |  |  |  | $ | 348,646 |  |  |  | $ | 284,433 |  |  |  | $ | 613,569 |  |  |  | $ | — |  |  |  | $ | — |  |  |  | $ | 2,168,877 |
Compensation Actually Paid vs. Total Shareholder Return [Text Block] | Relationship Among PEO and Non-PEO NEO Compensation Actually Paid, Company TSR and Peer Group TSR The following chart sets forth the relationship between Compensation Actually Paid to our PEO, the average Compensation Actually Paid to our non-PEO NEOs, the Company’s cumulative TSR over the three most recently completed fiscal years and the S&P 500 Steel Index TSR over the same period. |  |
Compensation Actually Paid vs. Net Income [Text Block] | Relationship Between PEO and Non-PEO NEO Compensation Actually Paid and Net Income The following chart sets forth the relationship between Compensation Actually Paid to our PEO, the average Compensation Actually Paid to our non-PEO NEOs, and our Net Income during the three most recently completed fiscal years. |  |
Compensation Actually Paid vs. Company Selected Measure [Text Block] | Relationship Between PEO and Non-PEO NEO Compensation Actually Paid and Company-Selected Measure The following chart sets forth the relationship between Compensation Actually Paid to our PEO, the average Compensation Actually Paid to our non-PEO NEOs, and our Company-Selected Measure during the three most recently completed fiscal years. |  |
Total Shareholder Return Vs Peer Group [Text Block] | Relationship Among PEO and Non-PEO NEO Compensation Actually Paid, Company TSR and Peer Group TSR The following chart sets forth the relationship between Compensation Actually Paid to our PEO, the average Compensation Actually Paid to our non-PEO NEOs, the Company’s cumulative TSR over the three most recently completed fiscal years and the S&P 500 Steel Index TSR over the same period. |  |
Tabular List [Table Text Block] | Tabular List of Most Important Financial Performance Measures The following table presents the financial performance measures that the Company considers to have been the most important in linking Compensation Actually Paid to our PEO and other NEOs for fiscal year 2023 to Company performance. The measures in this table are not ranked.
Adjusted EBITDA (Comp) Adjusted Earnings (Comp) ROICC Relative TSR
Total Shareholder Return Amount | $ 282.94 | 201.02 | 159.38
Peer Group Total Shareholder Return Amount | 376.11 | 305.08 | 265.38
Net Income (Loss) | $ 859,800,000 | $ 1,217,300,000 | $ 412,900,000
Company Selected Measure Amount | 1,367 | 1,472 | 762
PEO Name | Barbara R. Smith |  |
Measure [Axis]: 1 |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Measure Name | Adjusted EBITDA (Comp) |  |
Non-GAAP Measure Description [Text Block] | We determined Adjusted EBITDA (Comp) to be the most important financial performance measure used to link Company performance to Compensation Actually Paid to our PEO and non-PEO NEOs in fiscal year 2023. We define Adjusted EBITDA (Comp) as the sum of the Company’s net earnings before interest expense, income taxes, depreciation and amortization expense, asset impairments, and amortization of acquired unfavorable contract backlog. Adjusted EBITDA (Comp) is a non-GAAP financial measure. This performance measure may not have been the most important financial performance measure for fiscal years 2022 and 2021 and we may determine a different financial performance measure to be the most important financial performance measure in future years. |  |
Measure [Axis]: 2 |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Measure Name | Adjusted Earnings (Comp) |  |
Measure [Axis]: 3 |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Measure Name | ROICC |  |
Measure [Axis]: 4 |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Measure Name | Relative TSR |  |
PEO [Member] | Exclusion of Stock Awards [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | $ (6,184,205) | $ (5,825,836) | $ (4,859,240)
PEO [Member] | Inclusion of Equity Values [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | 17,415,350 | 15,625,519 | 15,693,671
PEO [Member] | YearEnd Fair Value of Equity Awards Granted During Year That Remained Unvested as of Last Day of Year [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | 5,426,209 | 4,866,271 | 3,837,861
PEO [Member] | Change in Fair Value from Last Day of Prior Year to Last Day of Year of Unvested Equity Awards [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | 2,054,000 | 1,133,400 | 2,213,685
PEO [Member] | VestingDate Fair Value of Equity Awards Granted During Year that Vested During Year [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | 2,762,628 | 2,921,104 | 2,687,565
PEO [Member] | Change in Fair Value from Last Day of Prior Year to Vesting Date of Unvested Equity Awards that Vested During Year [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | 7,172,513 | 6,704,744 | 6,954,560
PEO [Member] | Fair Value at Last Day of Prior Year of Equity Awards Forfeited During Year [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | 0 | 0 | 0
PEO [Member] | Value of Dividends or Other Earnings Paid on Equity Awards Not Otherwise Included [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | 0 | 0 | 0
PEO [Member] | Total Inclusion of Equity Values [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | 17,415,350 | 15,625,519 | 15,693,671
Non-PEO NEO [Member] | Exclusion of Stock Awards [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | (1,503,482) | (1,115,542) | (917,366)
Non-PEO NEO [Member] | Inclusion of Equity Values [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | 3,049,690 | 2,549,371 | 2,168,877
Non-PEO NEO [Member] | YearEnd Fair Value of Equity Awards Granted During Year That Remained Unvested as of Last Day of Year [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | 2,002,411 | 1,216,609 | 922,229
Non-PEO NEO [Member] | Change in Fair Value from Last Day of Prior Year to Last Day of Year of Unvested Equity Awards [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | 388,349 | 261,708 | 348,646
Non-PEO NEO [Member] | VestingDate Fair Value of Equity Awards Granted During Year that Vested During Year [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | 0 | 253,162 | 284,433
Non-PEO NEO [Member] | Change in Fair Value from Last Day of Prior Year to Vesting Date of Unvested Equity Awards that Vested During Year [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | 658,930 | 817,892 | 613,569
Non-PEO NEO [Member] | Fair Value at Last Day of Prior Year of Equity Awards Forfeited During Year [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | 0 | 0 | 0
Non-PEO NEO [Member] | Value of Dividends or Other Earnings Paid on Equity Awards Not Otherwise Included [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | 0 | 0 | 0
Non-PEO NEO [Member] | Total Inclusion of Equity Values [Member] |  |  |
Pay vs Performance Disclosure [Table] |  |  |
Adjustment to Compensation Amount | $ 3,049,690 | $ 2,549,371 | $ 2,168,877

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 3 + Details
Name: | ecd_AdjToCompAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 3 + Details
Name: | ecd_AdjToNonPeoNeoCompFnTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 3 + Details
Name: | ecd_AdjToPeoCompFnTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph vi + Details
Name: | ecd_CoSelectedMeasureAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph vi + Details
Name: | ecd_CoSelectedMeasureName
Namespace Prefix: | ecd_
Data Type: | xbrli:normalizedStringItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 5 -Subparagraph iii + Details
Name: | ecd_CompActuallyPaidVsCoSelectedMeasureTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 5 -Subparagraph ii + Details
Name: | ecd_CompActuallyPaidVsNetIncomeTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 5 -Subparagraph i + Details
Name: | ecd_CompActuallyPaidVsTotalShareholderRtnTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph vi + Details
Name: | ecd_MeasureName
Namespace Prefix: | ecd_
Data Type: | xbrli:normalizedStringItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 3 + Details
Name: | ecd_NamedExecutiveOfficersFnTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph vi + Details
Name: | ecd_NonGaapMeasureDescriptionTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph iii + Details
Name: | ecd_NonPeoNeoAvgCompActuallyPaidAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph ii + Details
Name: | ecd_NonPeoNeoAvgTotalCompAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph iv + Details
Name: | ecd_PeerGroupIssuersFnTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph iv + Details
Name: | ecd_PeerGroupTotalShareholderRtnAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph iii + Details
Name: | ecd_PeoActuallyPaidCompAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 3 + Details
Name: | ecd_PeoName
Namespace Prefix: | ecd_
Data Type: | xbrli:normalizedStringItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph ii + Details
Name: | ecd_PeoTotalCompAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 1 + Details
Name: | ecd_PvpTable
Namespace Prefix: | ecd_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 1 + Details
Name: | ecd_PvpTableTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 6 + Details
Name: | ecd_TabularListTableTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph iv + Details
Name: | ecd_TotalShareholderRtnAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 5 -Subparagraph iv + Details
Name: | ecd_TotalShareholderRtnVsPeerGroupTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(22)) -URI https://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (f) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8933-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=124431687&loc=d3e22595-107794 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(18)) -URI https://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 40 -Section 65 -Paragraph 1 -Subparagraph (f) -URI https://asc.fasb.org/extlink&oid=126732423&loc=SL123482106-238011 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=124431353&loc=SL124452729-227067 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(5)) -URI https://asc.fasb.org/extlink&oid=126975872&loc=SL124442552-122756 Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(20)) -URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227 Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI https://asc.fasb.org/extlink&oid=124431687&loc=d3e22499-107794 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(iv)) -URI https://asc.fasb.org/extlink&oid=126975872&loc=SL124442526-122756 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(iii)(A)) -URI https://asc.fasb.org/extlink&oid=126975872&loc=SL124442526-122756 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(i)) -URI https://asc.fasb.org/extlink&oid=126975872&loc=SL124442552-122756 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(i)) -URI https://asc.fasb.org/extlink&oid=126975872&loc=SL124442526-122756 Reference 15: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 9 -URI https://asc.fasb.org/extlink&oid=124431687&loc=d3e22663-107794 Reference 16: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iv)) -URI https://asc.fasb.org/extlink&oid=126975872&loc=SL124442552-122756 Reference 17: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(ii)) -URI https://asc.fasb.org/extlink&oid=126975872&loc=SL124442526-122756 Reference 18: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 28 -Subparagraph (f) -URI https://asc.fasb.org/extlink&oid=123596393&loc=d3e14064-108612 Reference 19: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=124431687&loc=d3e22583-107794 Reference 20: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(g)(1)(ii)) -URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 21: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 60B -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126958026&loc=SL5780133-109256 Reference 22: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 Reference 23: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=124431687&loc=d3e22658-107794 Reference 24: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1A -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126968391&loc=SL7669619-108580 Reference 25: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8924-108599 Reference 26: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 11 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=124431687&loc=d3e22694-107794 Reference 27: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 11 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124431687&loc=d3e22694-107794 Reference 28: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 7 -URI https://asc.fasb.org/extlink&oid=109222650&loc=SL51721683-107760 Reference 29: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1B -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126968391&loc=SL7669625-108580 Reference 30: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8736-108599 Reference 31: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(5)) -URI https://asc.fasb.org/extlink&oid=126975872&loc=SL124442526-122756 Reference 32: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iii)(B)) -URI https://asc.fasb.org/extlink&oid=126975872&loc=SL124442552-122756 Reference 33: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iii)(A)) -URI https://asc.fasb.org/extlink&oid=126975872&loc=SL124442552-122756 Reference 34: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8906-108599 Reference 35: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8933-108599 + Details
Name: | us-gaap_NetIncomeLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | ecd_MeasureAxis=1
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_MeasureAxis=2
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_MeasureAxis=3
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_MeasureAxis=4
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_ExecutiveCategoryAxis=ecd_PeoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=cmc_ExclusionOfStockAwardsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=cmc_InclusionOfEquityValuesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=cmc_YearendFairValueOfEquityAwardsGrantedDuringYearThatRemainedUnvestedAsOfLastDayOfYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=cmc_ChangeInFairValueFromLastDayOfPriorYearToLastDayOfYearOfUnvestedEquityAwardsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=cmc_VestingdateFairValueOfEquityAwardsGrantedDuringYearThatVestedDuringYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=cmc_ChangeInFairValueFromLastDayOfPriorYearToVestingDateOfUnvestedEquityAwardsThatVestedDuringYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=cmc_FairValueAtLastDayOfPriorYearOfEquityAwardsForfeitedDuringYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=cmc_ValueOfDividendsOrOtherEarningsPaidOnEquityAwardsNotOtherwiseIncludedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=cmc_TotalInclusionOfEquityValuesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_ExecutiveCategoryAxis=ecd_NonPeoNeoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |