XML 31 R2.htm IDEA: XBRL DOCUMENT
v3.24.4

Pay vs Performance Disclosure | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2023 | Sep. 30, 2021 | Sep. 30, 2024 | Jun. 30, 2021 | Sep. 30, 2024 USD ($) $ / shares | Sep. 30, 2023 USD ($) $ / shares | Sep. 30, 2022 USD ($) $ / shares | Sep. 30, 2021 USD ($) $ / shares
Pay vs Performance Disclosure |  |  |  |  |  |  |  |
Company Selected Measure Name |  |  |  |  | Adjusted EPS |  |  |
Named Executive Officers, Footnote |  |  |  |  |
(1) | Mr. Longhi became our principal executive officer (“PEO”) on December 12, 2023 and was our PEO for the remainder of Fiscal 2024. Mr. Perreault, our former PEO, served as PEO from June 26, 2021 through December 12, 2023. Mr. Walsh, our former PEO, retired on June 26, 2021. Our non-PEO NEOs included: (a) for Fiscal 2024, Messrs. O’Brien, Beard and Koerwer and Mses. Zagorski and Shea-Ballay; (b) for Fiscal 2023, Messrs. O’Brien, Jastrzebski, Beard and Koerwer and Mses. Zagorski and Gaudiosi; (c) for Fiscal 2022, Messrs. Jastrzebski and Beard and Mses. Zagorski and Gaudiosi; and (d) for Fiscal 2021, Messrs. Jastrzebski, Beard and Gallagher and Mses. Zagorski and Gaudiosi.
Peer Group Issuers, Footnote |  |  |  |  |
(3) | The Peer Group for which Total Shareholder Return is provided in column (g) is the S&P 500 Utilities Index.
Adjustment To PEO Compensation, Footnote |  |  |  |  |
(2) | The following amounts were deducted from/added to Summary Compensation Table total compensation in accordance with the SEC-mandated adjustments to calculate Compensation Actually Paid (“CAP”) to our PEO and average CAP to our non-PEO named executive officers. The fair value of equity awards was determined using methodologies and assumptions developed in a manner substantively consistent with those used to determine the grant date fair value of such awards.
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
PEO (M. Longhi) Summary Compensation Table Total to CAP Reconciliation
Fiscal Year |  |  | 2021 |  |  | 2022 |  |  | 2023 |  |  | 2024
Summary Compensation Table Total | ​ | ​ |  | n/a | ​ | ​ |  | n/a | ​ | ​ |  | n/a | ​ | ​ | $ | 6,227,806
Deduct Change in Actuarial Present Value of Pension Plans Reported in Fiscal Year | ​ | ​ | ​ | — | ​ | ​ |  | — | ​ | ​ |  | — | ​ | ​ |  | —
Add Service Cost of Pension in Fiscal Year | ​ | ​ | ​ | — | ​ | ​ |  | — | ​ | ​ |  | — | ​ | ​ |  | —
Add Prior Service Cost of Pension in Fiscal Year | ​ | ​ | ​ | — | ​ | ​ |  | — | ​ | ​ |  | — | ​ | ​ |  | —
Deduct Grant Date Fair Value of Stock Awards Granted in Fiscal Year | ​ | ​ | ​ | — | ​ | ​ |  | — | ​ | ​ |  | — | ​ | ​ |  | (3,039,803)
Add-Deduct Fair Value at Fiscal Year-End of Outstanding and Unvested Stock Awards Granted in Fiscal Year | ​ | ​ | ​ | — | ​ | ​ |  | — | ​ | ​ |  | — | ​ | ​ |  | 2,830,513
Add-Deduct Change in Fair Value of Outstanding and Unvested Stock Awards Granted in Prior Fiscal Years | ​ | ​ | ​ | — | ​ | ​ |  | — | ​ | ​ |  | — | ​ | ​ |  | —
Add-Deduct Fair Value at Vesting of Stock Awards Granted in Fiscal Year That Vested During Fiscal Year | ​ | ​ | ​ | — | ​ | ​ |  | — | ​ | ​ |  | — | ​ | ​ |  | —
Add-Deduct Change in Fair Value as of Vesting Date of Stock Awards Granted in Prior Fiscal Years For Which Applicable Vesting Conditions Were Satisfied During Fiscal Year | ​ | ​ | ​ | — | ​ | ​ |  | — | ​ | ​ |  | — | ​ | ​ |  | —
Deduct Fair Value as of Prior Fiscal Year-End of Stock Awards Granted in Prior Fiscal Years That Failed to Meet Applicable Vesting Conditions During Fiscal Year | ​ | ​ | ​ | — | ​ | ​ |  | — | ​ | ​ |  | — | ​ | ​ |  | —
Add Dividends or Other Earnings Paid on Stock Awards in the Fiscal Year Prior to the Vesting Date that are not otherwise included in the Total Compensation for the Fiscal Year | ​ | ​ | ​ | — | ​ | ​ |  | — | ​ | ​ |  | — | ​ | ​ |  | 171,958
Compensation Actually Paid | ​ | ​ | $ | n/a | ​ | ​ | $ | n/a | ​ | ​ | $ | n/a | ​ | ​ | $ | 6,190,474
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Former PEO (R. Perreault) Summary Compensation Table Total to CAP Reconciliation
Fiscal Year |  |  | 2021 |  |  | 2022 |  |  |  | 2023 |  |  |  | 2024
Summary Compensation Table Total | ​ | ​ | $ | 4,107,789 |  | ​ | $ | 6,060,694 |  | ​ | $ | 9,960,170 |  | ​ | $ | 5,346,550
Deduct Change in Actuarial Present Value of Pension Plans Reported in Fiscal Year | ​ | ​ | ​ | — |  | ​ |  | — |  | ​ | ​ | — |  | ​ | ​ | —
Add Service Cost of Pension in Fiscal Year | ​ | ​ | ​ | — |  | ​ |  | — |  | ​ | ​ | — |  | ​ | ​ | —
Add Prior Service Cost of Pension in Fiscal Year | ​ | ​ | ​ | — |  | ​ |  | — |  | ​ | ​ | — |  | ​ | ​ | —
Deduct Grant Date Fair Value of Stock Awards Granted in Fiscal Year | ​ | ​ | ​ | (2,522,588) |  | ​ |  | (4,158,984) |  | ​ | ​ | (7,733,691) |  | ​ | ​ | —
Add-Deduct Fair Value at Fiscal Year-End of Outstanding and Unvested Stock Awards Granted in Fiscal Year | ​ | ​ | ​ | 2,855,539 |  | ​ |  | 1,999,801 |  | ​ | ​ | 1,454,565 |  | ​ | ​ | —
Add-Deduct Change in Fair Value of Outstanding and Unvested Stock Awards Granted in Prior Fiscal Years | ​ | ​ | ​ | 745,506 |  | ​ |  | (2,073,984) |  | ​ | ​ | (1,912,144) |  | ​ | ​ | —
Add-Deduct Fair Value at Vesting of Stock Awards Granted in Fiscal Year That Vested During Fiscal Year | ​ | ​ | ​ | — |  | ​ |  | — |  | ​ | ​ | — |  | ​ | ​ | —
Add-Deduct Change in Fair Value as of Vesting Date of Stock Awards Granted in Prior Fiscal Years For Which Applicable Vesting Conditions Were Satisfied During Fiscal Year | ​ | ​ | ​ | 48,425 | ​ | ​ | ​ | 151,830 | ​ | ​ | ​ | 168,939 | ​ | ​ | ​ | —
Deduct Fair Value as of Prior Fiscal Year-End of Stock Awards Granted in Prior Fiscal Years That Failed to Meet Applicable Vesting Conditions During Fiscal Year | ​ | ​ | ​ | (4,165) |  | ​ |  | (13,838) |  | ​ | ​ | (36,180) |  | ​ | ​ | (2,517,804)
Add Dividends or Other Earnings Paid on Stock Awards in the Fiscal Year Prior to the Vesting Date that are not otherwise included in the Total Compensation for the Fiscal Year | ​ | ​ | ​ | 75,087 |  | ​ |  | 130,931 |  | ​ | ​ | 185,588 |  | ​ | ​ | (376,158)
Compensation Actually Paid | ​ | ​ | $ | 5,305,593 |  | ​ | $ | 2,096,450 |  | ​ | $ | 2,087,247 |  | ​ | $ | 2,452,588
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Former PEO (Walsh) Summary Compensation Table Total to CAP Reconciliation
Fiscal Year |  |  | 2021 |  |  | 2022 |  |  |  | 2023 |  |  |  | 2024
Summary Compensation Table Total | ​ | ​ | $ | 6,853,838 |  | ​ |  | n/a |  | ​ | ​ | n/a |  | ​ | ​ | n/a
Deduct Change in Actuarial Present Value of Pension Plans Reported in Fiscal Year | ​ | ​ | ​ | — |  | ​ |  | — |  | ​ | ​ | — |  | ​ | ​ | —
Add Service Cost of Pension in Fiscal Year | ​ | ​ | ​ | 571,123 |  | ​ |  | — |  | ​ | ​ | — |  | ​ | ​ | —
Add Prior Service Cost of Pension in Fiscal Year | ​ | ​ | ​ | — |  | ​ |  | — |  | ​ | ​ | — |  | ​ | ​ | —
Deduct Grant Date Fair Value of Stock Awards Granted in Fiscal Year | ​ | ​ | ​ | (4,000,639) |  | ​ |  | — |  | ​ | ​ | — |  | ​ | ​ | —
Add-Deduct Fair Value at Fiscal Year-End of Outstanding and Unvested Stock Awards Granted in Fiscal Year | ​ | ​ | ​ | 5,650,907 |  | ​ |  | — |  | ​ | ​ | — |  | ​ | ​ | —
Add-Deduct Change in Fair Value of Outstanding and Unvested Stock Awards Granted in Prior Fiscal Years | ​ | ​ | ​ | 1,934,202 |  | ​ |  | — |  | ​ | ​ | — |  | ​ | ​ | —
Add-Deduct Fair Value at Vesting of Stock Awards Granted in Fiscal Year That Vested During Fiscal Year | ​ | ​ | ​ | — |  | ​ |  | — |  | ​ | ​ | — |  | ​ | ​ | —
Add-Deduct Change in Fair Value as of Vesting Date of Stock Awards Granted in Prior Fiscal Years For Which Applicable Vesting Conditions Were Satisfied During Fiscal Year | ​ | ​ | ​ | 175,908 | ​ | ​ | ​ | — | ​ | ​ | ​ | — | ​ | ​ | ​ | —
Deduct Fair Value as of Prior Fiscal Year-End of Stock Awards Granted in Prior Fiscal Years That Failed to Meet Applicable Vesting Conditions During Fiscal Year | ​ | ​ | ​ | (18,130) |  | ​ |  | — |  | ​ | ​ | — |  | ​ | ​ | —
Add Dividends or Other Earnings Paid on Stock Awards in the Fiscal Year Prior to the Vesting Date that are not otherwise included in the Total Compensation for the Fiscal Year | ​ | ​ | ​ | 170,940 |  | ​ |  | — |  | ​ | ​ | — | ​ | ​ | ​ | —
Compensation Actually Paid | ​ | ​ | $ | 11,338,149 |  | ​ | ​ | n/a |  | ​ | ​ | n/a | ​ | ​ | ​ | n/a
Non-PEO NEO Average Total Compensation Amount |  |  |  |  | $ 3,026,732 | $ 2,146,817 | $ 2,036,182 | $ 2,326,699
Non-PEO NEO Average Compensation Actually Paid Amount |  |  |  |  | $ 2,505,455 | 508,745 | 526,688 | 3,345,437
Adjustment to Non-PEO NEO Compensation Footnote |  |  |  |  | The following amounts were deducted from/added to Summary Compensation Table total compensation in accordance with the SEC-mandated adjustments to calculate Compensation Actually Paid (“CAP”) to our PEO and average CAP to our non-PEO named executive officers. The fair value of equity awards was determined using methodologies and assumptions developed in a manner substantively consistent with those used to determine the grant date fair value of such awards. ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Average other NEOs Summary Compensation Table Total to CAP Reconciliation
Fiscal Year |  |  | 2021 |  |  | 2022 |  |  | 2023 |  |  | 2024
Average Summary Compensation Table Total | ​ | ​ | $ | 2,326,699 | ​ | ​ | $ | 2,036,182 | ​ | ​ | $ | 2,146,817 | ​ | ​ | $ | 3,026,732
Deduct Change in Actuarial Present Value of Pension Plans Reported in Fiscal Year | ​ | ​ | ​ | (4,416) | ​ | ​ |  | — | ​ | ​ |  | (112,777) | ​ | ​ |  | (324,287)
Add Service Cost of Pension in Fiscal Year | ​ | ​ | ​ | 40,323 | ​ | ​ |  | 48,571 | ​ | ​ |  | 24,384 | ​ | ​ |  | 26,187
Add Prior Service Cost of Pension in Fiscal Year | ​ | ​ | ​ | — | ​ | ​ |  | — | ​ | ​ |  | — | ​ | ​ |  | —
Deduct Grant Date Fair Value of Stock Awards Granted in Fiscal Year | ​ | ​ | ​ | (946,162) | ​ | ​ |  | (996,247) | ​ | ​ |  | (1,220,089) | ​ | ​ |  | (1,098,440)
Add-Deduct Fair Value at Fiscal Year-End of Outstanding and Unvested Stock Awards Granted in Fiscal Year | ​ | ​ | ​ | 1,336,445 | ​ | ​ |  | 479,065 | ​ | ​ |  | 170,192 | ​ | ​ |  | 833,860
Add-Deduct Change in Fair Value of Outstanding and Unvested Stock Awards Granted in Prior Fiscal Years | ​ | ​ | ​ | 458,419 | ​ | ​ |  | (1,148,318) | ​ | ​ |  | (294,986) | ​ | ​ |  | 65,638
Add-Deduct Fair Value at Vesting of Stock Awards Granted in Fiscal Year That Vested During Fiscal Year | ​ | ​ | ​ | — | ​ | ​ |  | — | ​ | ​ |  | 3,411 | ​ | ​ |  | —
Add-Deduct Change in Fair Value as of Vesting Date of Stock Awards Granted in Prior Fiscal Years For Which Applicable Vesting Conditions Were Satisfied During Fiscal Year | ​ | ​ | ​ | 93,323 | ​ | ​ |  | 76,365 | ​ | ​ |  | 48,985 | ​ | ​ |  | 8,316
Deduct Fair Value as of Prior Fiscal Year-End of Stock Awards Granted in Prior Fiscal Years That Failed to Meet Applicable Vesting Conditions During Fiscal Year | ​ | ​ | ​ | (2,135) | ​ | ​ |  | (12,696) | ​ | ​ |  | (254,651) | ​ | ​ |  | (60,141)
Add Dividends or Other Earnings Paid on Stock Awards in the Fiscal Year Prior to the Vesting Date that are not otherwise included in the Total Compensation for the Fiscal Year | ​ | ​ | ​ | 42,941 | ​ | ​ |  | 43,766 | ​ | ​ |  | (2,541) | ​ | ​ |  | 27,590
Average Compensation Actually Paid for NEOs | ​ | ​ | $ | 3,345,437 | ​ | ​ | $ | 526,688 | ​ | ​ | $ | 508,745 | ​ | ​ | $ | 2,505,455
​ |  |  |
Compensation Actually Paid vs. Total Shareholder Return |  |  |  |  | ​
​ ​ ​ ​ ​ |  | ​ ​ ​ ​ ​
RELATIONSHIP BETWEEN COMPENSATION ACTUALLY PAID & TSR ​ ​ ​ |  | RELATIONSHIP BETWEEN COMPENSATION ACTUALLY PAID & NET INCOME ​ ​ ​
Compensation Actually Paid vs. Net Income |  |  |  |  | ​
​ ​ ​ ​ ​ |  | ​ ​ ​ ​ ​
RELATIONSHIP BETWEEN COMPENSATION ACTUALLY PAID & TSR ​ ​ ​ |  | RELATIONSHIP BETWEEN COMPENSATION ACTUALLY PAID & NET INCOME ​ ​ ​
Compensation Actually Paid vs. Company Selected Measure |  |  |  |  | ​
RELATIONSHIP BETWEEN COMPENSATION ACTUALLY PAID & ADJUSTED EPS ​ ​ |  | ​ TABULAR LIST OF MOST IMPORTANT PERFORMANCE MEASURES ​ ​ ● Adjusted EPS ● Safety - OSHA recordables ● OpEx reduction ● Excess Free Cash Flow ● Relative TSR
Total Shareholder Return Vs Peer Group |  |  |  |  | The following graphs present the relationship during 2024, 2023, 2022, and 2021 between (1) CAP to (a) each person serving as PEO and (b) our other NEOs on an average basis, and each of (2) (a) the Company’s and Peer Group’s TSR for such years and (b) the Company’s Net Income and Adjusted EPS for such years. ​
​ ​ ​ ​ ​ |  | ​ ​ ​ ​ ​
RELATIONSHIP BETWEEN COMPENSATION ACTUALLY PAID & TSR ​ ​ ​ |  | RELATIONSHIP BETWEEN COMPENSATION ACTUALLY PAID & NET INCOME ​ ​ ​
Tabular List, Table |  |  |  |  | ​
RELATIONSHIP BETWEEN COMPENSATION ACTUALLY PAID & ADJUSTED EPS ​ ​ |  | ​ TABULAR LIST OF MOST IMPORTANT PERFORMANCE MEASURES ​ ​ ● Adjusted EPS ● Safety - OSHA recordables ● OpEx reduction ● Excess Free Cash Flow ● Relative TSR
​ |  |  |
Total Shareholder Return Amount |  |  |  |  | $ 90.96 | 78.44 | 105.02 | 133.5
Peer Group Total Shareholder Return Amount |  |  |  |  | 154.55 | 108.98 | 117.2 | 111.01
Net Income (Loss) |  |  |  |  | $ 461,000,000 | $ (1,502,000,000) | $ 1,073,000,000 | $ 1,467,000,000
Company Selected Measure Amount | $ / shares |  |  |  |  | 3.06 | 2.84 | 2.9 | 2.96
PEO Name | Mr. Perreault | Mr. Perreault | Mr. Longhi | Mr. Walsh |  | Mr. Perreault | Mr. Perreault |
Measure:: 1 |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |
Name |  |  |  |  | Adjusted EPS |  |  |
Non-GAAP Measure Description |  |  |  |  |
(4) | Adjusted EPS is a Non-GAAP financial measure. For a discussion of adjustments, please see the “Executive Summary” section of our Compensation Discussion and Analysis (CD&A).
Measure:: 2 |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |
Name |  |  |  |  | Safety - OSHA recordables |  |  |
Measure:: 3 |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |
Name |  |  |  |  | OpEx reduction |  |  |
Measure:: 4 |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |
Name |  |  |  |  | Excess Free Cash Flow |  |  |
Measure:: 5 |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |
Name |  |  |  |  | Relative TSR |  |  |
Mr. Longhi |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |
PEO Total Compensation Amount |  |  |  |  | $ 6,227,806 |  |  |
PEO Actually Paid Compensation Amount |  |  |  |  | 6,190,474 |  |  |
Mr. Perreault |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |
PEO Total Compensation Amount |  |  |  |  | 5,346,550 | $ 9,960,170 | $ 6,060,694 | $ 4,107,789
PEO Actually Paid Compensation Amount |  |  |  |  | 2,452,588 | 2,087,247 | 2,096,450 | 5,305,593
Mr. Walsh |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |
PEO Total Compensation Amount |  |  |  |  |  |  |  | 6,853,838
PEO Actually Paid Compensation Amount |  |  |  |  |  |  |  | 11,338,149
PEO | Mr. Longhi | Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |
Adjustment to Compensation, Amount |  |  |  |  | (3,039,803) |  |  |
PEO | Mr. Longhi | Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |
Adjustment to Compensation, Amount |  |  |  |  | 2,830,513 |  |  |
PEO | Mr. Longhi | Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |
Adjustment to Compensation, Amount |  |  |  |  | 171,958 |  |  |
PEO | Mr. Perreault | Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |
Adjustment to Compensation, Amount |  |  |  |  |  | (7,733,691) | (4,158,984) | (2,522,588)
PEO | Mr. Perreault | Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |
Adjustment to Compensation, Amount |  |  |  |  |  | 1,454,565 | 1,999,801 | 2,855,539
PEO | Mr. Perreault | Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |
Adjustment to Compensation, Amount |  |  |  |  |  | (1,912,144) | (2,073,984) | 745,506
PEO | Mr. Perreault | Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |
Adjustment to Compensation, Amount |  |  |  |  |  | 168,939 | 151,830 | 48,425
PEO | Mr. Perreault | Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |
Adjustment to Compensation, Amount |  |  |  |  | (2,517,804) | (36,180) | (13,838) | (4,165)
PEO | Mr. Perreault | Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |
Adjustment to Compensation, Amount |  |  |  |  | (376,158) | 185,588 | 130,931 | 75,087
PEO | Mr. Walsh | Pension Adjustments Service Cost |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |
Adjustment to Compensation, Amount |  |  |  |  |  |  |  | 571,123
PEO | Mr. Walsh | Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |
Adjustment to Compensation, Amount |  |  |  |  |  |  |  | (4,000,639)
PEO | Mr. Walsh | Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |
Adjustment to Compensation, Amount |  |  |  |  |  |  |  | 5,650,907
PEO | Mr. Walsh | Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |
Adjustment to Compensation, Amount |  |  |  |  |  |  |  | 1,934,202
PEO | Mr. Walsh | Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |
Adjustment to Compensation, Amount |  |  |  |  |  |  |  | 175,908
PEO | Mr. Walsh | Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |
Adjustment to Compensation, Amount |  |  |  |  |  |  |  | (18,130)
PEO | Mr. Walsh | Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |
Adjustment to Compensation, Amount |  |  |  |  |  |  |  | 170,940
Non-PEO NEO | Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |
Adjustment to Compensation, Amount |  |  |  |  | (324,287) | (112,777) |  | (4,416)
Non-PEO NEO | Pension Adjustments Service Cost |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |
Adjustment to Compensation, Amount |  |  |  |  | 26,187 | 24,384 | 48,571 | 40,323
Non-PEO NEO | Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |
Adjustment to Compensation, Amount |  |  |  |  | (1,098,440) | (1,220,089) | (996,247) | (946,162)
Non-PEO NEO | Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |
Adjustment to Compensation, Amount |  |  |  |  | 833,860 | 170,192 | 479,065 | 1,336,445
Non-PEO NEO | Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |
Adjustment to Compensation, Amount |  |  |  |  | 65,638 | (294,986) | (1,148,318) | 458,419
Non-PEO NEO | Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |
Adjustment to Compensation, Amount |  |  |  |  |  | 3,411 |  |
Non-PEO NEO | Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |
Adjustment to Compensation, Amount |  |  |  |  | 8,316 | 48,985 | 76,365 | 93,323
Non-PEO NEO | Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |
Adjustment to Compensation, Amount |  |  |  |  | (60,141) | (254,651) | (12,696) | (2,135)
Non-PEO NEO | Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |
Adjustment to Compensation, Amount |  |  |  |  | $ 27,590 | $ (2,541) | $ 43,766 | $ 42,941

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 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://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-6 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-9 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 805 -SubTopic 60 -Name Accounting Standards Codification -Section 65 -Paragraph 1 -Subparagraph (g) -Publisher FASB -URI https://asc.fasb.org/1943274/2147476176/805-60-65-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 323 -Name Accounting Standards Codification -Section 65 -Paragraph 2 -Subparagraph (g)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478666/740-323-65-2 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(20)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(g)(1)(ii)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481687/323-10-50-3 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 28 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-28 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482765/220-10-50-6 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-3 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-1 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 40 -Name Accounting Standards Codification -Section 65 -Paragraph 1 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480175/815-40-65-1 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-8 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-11 Reference 15: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-11 Reference 16: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-4 Reference 17: http://www.xbrl.org/2003/role/exampleRef -Topic 946 -SubTopic 830 -Name Accounting Standards Codification -Section 55 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479168/946-830-55-10 Reference 18: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section 45 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479105/946-220-45-7 Reference 19: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(18)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477250/944-220-S99-1 Reference 20: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07(9)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1 Reference 21: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.6-09(1)(d)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479134/946-220-S99-3 Reference 22: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(i)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 23: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(ii)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 24: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(iii)(A)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 25: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(iv)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 26: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(5)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 27: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(i)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B Reference 28: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iii)(A)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B Reference 29: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iii)(B)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B Reference 30: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iv)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B Reference 31: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(5)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B Reference 32: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 60B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482689/260-10-45-60B Reference 33: http://www.xbrl.org/2003/role/disclosureRef -Topic 205 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483499/205-20-50-7 Reference 34: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 Reference 35: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-1A Reference 36: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-1B Reference 37: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(22)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478524/942-220-S99-1 + 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_MeasureAxis=5
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_IndividualAxis=ugi_Mr.LonghiMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_IndividualAxis=ugi_MrPerreaultMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_IndividualAxis=ugi_MrWalshMember
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=ecd_EqtyAwrdsInSummryCompstnTblForAplblYrMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

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

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

X
- Details
Name: | ecd_AdjToCompAxis=ecd_PnsnAdjsSvcCstMember
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: |

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

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