v3.26.1
Pay vs Performance Disclosure
 12 Months Ended
Dec. 31, 2025
USD ($)
$ / shares
Dec. 31, 2024
USD ($)
$ / shares
Dec. 31, 2023
USD ($)
$ / shares
Dec. 31, 2022
USD ($)
$ / shares
Dec. 31, 2021
USD ($)
$ / shares
Pay vs Performance Disclosure          
Pay vs Performance Disclosure, Table
Pay Versus Performance
We are providing the following information to comply with Item 402(v) of Regulation S-K:
The Pay vs. Performance (“PVP”) table below provides the “compensation actually paid” ​(“CAP”) to the PEO and the average CAP for non-PEO NEOs. CAP represents a new calculation of compensation that differs from the total compensation reported in the Summary Compensation Table (“SCT”). You should refer to the “Compensation Discussion and Analysis” section above for discussion regarding how the Company’s compensation program is designed to align with the Company’s performance and long-term shareholder interests.
Year (a)
​ ​
SCT Total for
PEO (Mark)(1)
($)
(b)
 ​ ​
CAP to PEO
(Mark)(4)
($)
(c)
 ​ ​
SCT Total
for PEO
(Singh)(2)
($)
(b)
 ​ ​
CAP to
PEO
(Singh)(4)
($)
(c)
 ​ ​
Average SCT
Total for
Non-PEO
NEOs(3)
($)
(d)
 ​ ​
Average CAP
to Non-PEO
NEOs(5)
($)
(e)
 ​ ​
Value of initial fixed $100
investment based on:
​ ​
Net
Income(7)
(in millions)
($)
(h)
 ​ ​
Company-Selected
Measure:
Ameren Adjusted
(Non-GAAP)
Annual Earnings
Per Share(8)
($)
(i)
 ​
​
Cumulative
TSR(6)
($)
(f)
 ​ ​
Peer Group
Cumulative
TSR(6)
($)
(g)
 ​
2025 ​ ​ ​ ​ — ​ ​ ​ ​ ​ — ​ ​ ​ ​ ​ 3,591,742 ​ ​ ​ ​ ​ 4,251,012 ​ ​ ​ ​ ​ 6,264,291 ​ ​ ​ ​ ​ 7,644,264 ​ ​ ​ ​ ​ N/A ​ ​ ​ ​ ​ N/A ​ ​ ​ ​ ​ 735 ​ ​ ​ ​ ​ 5.03 ​ ​
2024 ​ ​ ​ ​ — ​ ​ ​ ​ ​ — ​ ​ ​ ​ ​ 2,727,870 ​ ​ ​ ​ ​ 4,367,638 ​ ​ ​ ​ ​ 4,788,691 ​ ​ ​ ​ ​ 9,023,750 ​ ​ ​ ​ ​ N/A ​ ​ ​ ​ ​ N/A ​ ​ ​ ​ ​ 620 ​ ​ ​ ​ ​ 4.63 ​ ​
2023 ​ ​ ​ ​ — ​ ​ ​ ​ ​ — ​ ​ ​ ​ ​ 2,702,682 ​ ​ ​ ​ ​ 1,881,829 ​ ​ ​ ​ ​ 5,350,019 ​ ​ ​ ​ ​ 1,285,156 ​ ​ ​ ​ ​ N/A ​ ​ ​ ​ ​ N/A ​ ​ ​ ​ ​ 607 ​ ​ ​ ​ ​ 4.38 ​ ​
2022 ​ ​ ​ ​ 1,884,831 ​ ​ ​ ​ ​ 463,937 ​ ​ ​ ​ ​ 2,108,814 ​ ​ ​ ​ ​ 2,138,912 ​ ​ ​ ​ ​ 5,100,902 ​ ​ ​ ​ ​ 6,083,692 ​ ​ ​ ​ ​ N/A ​ ​ ​ ​ ​ N/A ​ ​ ​ ​ ​ 513 ​ ​ ​ ​ ​ 4.14 ​ ​
2021 ​ ​ ​ ​ 2,499,003 ​ ​ ​ ​ ​ 3,093,519 ​ ​ ​ ​ ​ N/A ​ ​ ​ ​ ​ N/A ​ ​ ​ ​ ​ 4,380,007 ​ ​ ​ ​ ​ 5,958,439 ​ ​ ​ ​ ​ N/A ​ ​ ​ ​ ​ N/A ​ ​ ​ ​ ​ 425 ​ ​ ​ ​ ​ 3.84 ​ ​
​
(1)
Mr. Richard J. Mark served as the PEO in 2021 and through August 1, 2022, when he retired.
​
(2)
Effective with Mr. Mark’s retirement, Mr. Singh began serving as the PEO effective August 1, 2022.
​
(3)
The non-PEO NEOs for the applicable periods are: Mr. Lyons (2022-2025), Mr. Moehn (2021-2025), Mr. Warner L. Baxter (2021-2023), Ms. Chonda J. Nwamu (2021-2024), Ms. Bhavani Amirthalingam (2021; 2023), Mr. Schukar (2024-2025), and Mr. Lindgren (2025).
​
(4)
To calculate CAP for the PEO, as reported in column (c) with respect to Mr. Singh, the following amounts were deducted from and added to the PEO’s total compensation, as reported in the SCT:
​
​ ​ ​
2025
 ​
SCT Total for PEO ​ ​ ​ ​ 3,591,742 ​ ​
Deductions from SCT: ​ ​ ​ ​ ​ ​ ​
Grant Date Fair Value of Equity-Based Awards Granted in Year (as Reported in Column (e) of the SCT) ​ ​ ​ ​ (1,730,861) ​ ​
Change in Pension Value (as included in column (g) of the SCT) ​ ​ ​ ​ (171,913) ​ ​
Additions to SCT: ​ ​ ​ ​ ​ ​ ​
Fair Value at Year-end of Unvested Awards Granted in Year(9) ​ ​ ​ ​ 1,670,841 ​ ​
Change in Fair Value of Awards Granted in Prior Years that Vested during the Year(9) ​ ​ ​ ​ 120,223 ​ ​
Change in Fair Value of Unvested Awards Granted in Prior Years that Remain Unvested and Outstanding at Year-End(9) ​ ​ ​ ​ 662,497 ​ ​
Service Cost for all Defined Benefit Pension Plans ​ ​ ​ ​ 108,483 ​ ​
Compensation Actually Paid to PEO(10) ​ ​ ​ ​ 4,251,012 ​ ​
(5)
To calculate Average CAP for the other NEOs, as reported in column (e), the following amounts were deducted from and added to the NEOs’ total compensation, as reported in the SCT:
​
​ ​ ​
2025
 ​
Average SCT Total Compensation for Non-PEO NEOs ​ ​ ​ ​ 6,264,291 ​ ​
Deductions from SCT: ​ ​ ​ ​ ​ ​ ​
Grant Date Fair Value of Equity-Based Awards Granted in Year (as Reported in Column (e) of the SCT) ​ ​ ​ ​ (3,380,151) ​ ​
Change in Pension Value (as included in column (g) of the SCT) ​ ​ ​ ​ (296,192) ​ ​
Additions to SCT: ​ ​ ​ ​ ​ ​ ​
Fair Value at Year-end of Unvested Awards Granted in Year(9) ​ ​ ​ ​ 3,107,451 ​ ​
Change in Fair Value of Awards Granted in Prior Years that Vested during the Year(9) ​ ​ ​ ​ 297,245 ​ ​
Change in Fair Value of Unvested Awards Granted in Prior Years that Remain Unvested and Outstanding at Year-End(9) ​ ​ ​ ​ 1,491,838 ​ ​
Service Cost for all Defined Benefit Pension Plans ​ ​ ​ ​ 159,782 ​ ​
Average Compensation Actually Paid to Non-PEO NEOs(10) ​ ​ ​ ​ 7,644,264 ​ ​
​
(6)
The Company does not have publicly traded shares of common stock and, as a result, does not have a “total shareholder return”. As a result no cumulative total shareholder return or peer group cumulative total shareholder return has been included in this table.
​
(7)
Value reported is the Company’s net income attributable to Ameren common shareholders, as reported in the Company’s Annual Report on Form 10-K for the applicable period.
​
(8)
Our named executive officers are compensated by Ameren in accordance with its executive compensation policies. The Company does not make independent decisions regarding the compensation of its executive officers. As a result, the company-selected measure included in this table is Ameren’s adjusted (non-GAAP) diluted EPS for the respective year, which reflects the financial performance measure that in Ameren’s assessment represents the most important financial measure used to link compensation actually paid for the most recently completed fiscal year to company performance. Except for 2024 and 2025, values reported represent Ameren’s GAAP diluted EPS and adjusted (non-GAAP) diluted EPS. See Appendix A for a reconciliation of GAAP to adjusted (non-GAAP) EPS for 2024 and 2025.
​
(9)
The below table provides the valuation assumptions used in determining the fair value of equity awards (on the respective valuation dates) that are materially different from those originally disclosed as of the grant date of such equity awards.
​
Performance Period
​ ​
Valuation Date
 ​ ​
Risk-Free Rate
 ​ ​
Ameren’s Common
Stock Volatility
 ​ ​
Volatility Range for the
Peer Group
 ​
2025−2027
 ​ ​
12/31/2025
​ ​
3.47%
​ ​
17.19%
​ ​
16.30%−25.64%
​
2024−2026
 ​ ​
12/31/2024
12/31/2025
​ ​
4.25%
3.48%
​ ​
19.77%
17.34%
​ ​
17.27%−23.80%
16.71%−27.48%
​
2023−2028
 ​ ​
12/31/2023
12/31/2024
12/31/2025
​ ​
3.85%
4.32%
3.54%
​ ​
26.20%
19.82%
18.93%
​ ​
24.49%−30.56%
18.15%−22.91%
17.19%−26.33%
​
2023−2025
 ​ ​
12/31/2023
12/31/2024
​ ​
4.23%
4.16%
​ ​
22.0%
17.05%
​ ​
19.98%−24.79%
15.08%−23.65%
​
​
(10)
No adjustments were required with respect to the dollar value of dividends or other earnings paid on stock or option awards, because the value of dividend equivalents accrued on such awards are included in the calculation of the fair value of such awards as of each applicable valuation date.
       
Company Selected Measure Name Annual Earnings Per Share        
Named Executive Officers, Footnote
(1)
Mr. Richard J. Mark served as the PEO in 2021 and through August 1, 2022, when he retired.
​
(2)
Effective with Mr. Mark’s retirement, Mr. Singh began serving as the PEO effective August 1, 2022.
​
(3)
The non-PEO NEOs for the applicable periods are: Mr. Lyons (2022-2025), Mr. Moehn (2021-2025), Mr. Warner L. Baxter (2021-2023), Ms. Chonda J. Nwamu (2021-2024), Ms. Bhavani Amirthalingam (2021; 2023), Mr. Schukar (2024-2025), and Mr. Lindgren (2025).
       
Peer Group Issuers, Footnote
(6)
The Company does not have publicly traded shares of common stock and, as a result, does not have a “total shareholder return”. As a result no cumulative total shareholder return or peer group cumulative total shareholder return has been included in this table.
       
Adjustment To PEO Compensation, Footnote
(4)
To calculate CAP for the PEO, as reported in column (c) with respect to Mr. Singh, the following amounts were deducted from and added to the PEO’s total compensation, as reported in the SCT:
​
​ ​ ​
2025
 ​
SCT Total for PEO ​ ​ ​ ​ 3,591,742 ​ ​
Deductions from SCT: ​ ​ ​ ​ ​ ​ ​
Grant Date Fair Value of Equity-Based Awards Granted in Year (as Reported in Column (e) of the SCT) ​ ​ ​ ​ (1,730,861) ​ ​
Change in Pension Value (as included in column (g) of the SCT) ​ ​ ​ ​ (171,913) ​ ​
Additions to SCT: ​ ​ ​ ​ ​ ​ ​
Fair Value at Year-end of Unvested Awards Granted in Year(9) ​ ​ ​ ​ 1,670,841 ​ ​
Change in Fair Value of Awards Granted in Prior Years that Vested during the Year(9) ​ ​ ​ ​ 120,223 ​ ​
Change in Fair Value of Unvested Awards Granted in Prior Years that Remain Unvested and Outstanding at Year-End(9) ​ ​ ​ ​ 662,497 ​ ​
Service Cost for all Defined Benefit Pension Plans ​ ​ ​ ​ 108,483 ​ ​
Compensation Actually Paid to PEO(10) ​ ​ ​ ​ 4,251,012 ​ ​
(9)
The below table provides the valuation assumptions used in determining the fair value of equity awards (on the respective valuation dates) that are materially different from those originally disclosed as of the grant date of such equity awards.
​
Performance Period
​ ​
Valuation Date
 ​ ​
Risk-Free Rate
 ​ ​
Ameren’s Common
Stock Volatility
 ​ ​
Volatility Range for the
Peer Group
 ​
2025−2027
 ​ ​
12/31/2025
​ ​
3.47%
​ ​
17.19%
​ ​
16.30%−25.64%
​
2024−2026
 ​ ​
12/31/2024
12/31/2025
​ ​
4.25%
3.48%
​ ​
19.77%
17.34%
​ ​
17.27%−23.80%
16.71%−27.48%
​
2023−2028
 ​ ​
12/31/2023
12/31/2024
12/31/2025
​ ​
3.85%
4.32%
3.54%
​ ​
26.20%
19.82%
18.93%
​ ​
24.49%−30.56%
18.15%−22.91%
17.19%−26.33%
​
2023−2025
 ​ ​
12/31/2023
12/31/2024
​ ​
4.23%
4.16%
​ ​
22.0%
17.05%
​ ​
19.98%−24.79%
15.08%−23.65%
​
​
(10)
No adjustments were required with respect to the dollar value of dividends or other earnings paid on stock or option awards, because the value of dividend equivalents accrued on such awards are included in the calculation of the fair value of such awards as of each applicable valuation date.
       
Non-PEO NEO Average Total Compensation Amount $ 6,264,291 $ 4,788,691 $ 5,350,019 $ 5,100,902 $ 4,380,007
Non-PEO NEO Average Compensation Actually Paid Amount $ 7,644,264 9,023,750 1,285,156 6,083,692 5,958,439
Adjustment to Non-PEO NEO Compensation Footnote
(5)
To calculate Average CAP for the other NEOs, as reported in column (e), the following amounts were deducted from and added to the NEOs’ total compensation, as reported in the SCT:
​
​ ​ ​
2025
 ​
Average SCT Total Compensation for Non-PEO NEOs ​ ​ ​ ​ 6,264,291 ​ ​
Deductions from SCT: ​ ​ ​ ​ ​ ​ ​
Grant Date Fair Value of Equity-Based Awards Granted in Year (as Reported in Column (e) of the SCT) ​ ​ ​ ​ (3,380,151) ​ ​
Change in Pension Value (as included in column (g) of the SCT) ​ ​ ​ ​ (296,192) ​ ​
Additions to SCT: ​ ​ ​ ​ ​ ​ ​
Fair Value at Year-end of Unvested Awards Granted in Year(9) ​ ​ ​ ​ 3,107,451 ​ ​
Change in Fair Value of Awards Granted in Prior Years that Vested during the Year(9) ​ ​ ​ ​ 297,245 ​ ​
Change in Fair Value of Unvested Awards Granted in Prior Years that Remain Unvested and Outstanding at Year-End(9) ​ ​ ​ ​ 1,491,838 ​ ​
Service Cost for all Defined Benefit Pension Plans ​ ​ ​ ​ 159,782 ​ ​
Average Compensation Actually Paid to Non-PEO NEOs(10) ​ ​ ​ ​ 7,644,264 ​ ​
(9)
The below table provides the valuation assumptions used in determining the fair value of equity awards (on the respective valuation dates) that are materially different from those originally disclosed as of the grant date of such equity awards.
​
Performance Period
​ ​
Valuation Date
 ​ ​
Risk-Free Rate
 ​ ​
Ameren’s Common
Stock Volatility
 ​ ​
Volatility Range for the
Peer Group
 ​
2025−2027
 ​ ​
12/31/2025
​ ​
3.47%
​ ​
17.19%
​ ​
16.30%−25.64%
​
2024−2026
 ​ ​
12/31/2024
12/31/2025
​ ​
4.25%
3.48%
​ ​
19.77%
17.34%
​ ​
17.27%−23.80%
16.71%−27.48%
​
2023−2028
 ​ ​
12/31/2023
12/31/2024
12/31/2025
​ ​
3.85%
4.32%
3.54%
​ ​
26.20%
19.82%
18.93%
​ ​
24.49%−30.56%
18.15%−22.91%
17.19%−26.33%
​
2023−2025
 ​ ​
12/31/2023
12/31/2024
​ ​
4.23%
4.16%
​ ​
22.0%
17.05%
​ ​
19.98%−24.79%
15.08%−23.65%
​
​
(10)
No adjustments were required with respect to the dollar value of dividends or other earnings paid on stock or option awards, because the value of dividend equivalents accrued on such awards are included in the calculation of the fair value of such awards as of each applicable valuation date.
       
Compensation Actually Paid vs. Company Selected Measure
Relationship Between Compensation Actually Paid and Performance Measures in the PVP Table
The most important annual financial measure that Ameren uses to link pay to performance is Ameren’s annual GAAP diluted EPS, which is not only the most heavily weighted metric in the STIP, but also generally consistent with Ameren’s TSR, which is the most heavily weighted performance metric in the LTIP. As shown in the chart below, Ameren’s GAAP diluted EPS increased by 7.8% between 2021 and 2022, while the Average NEO CAP increased by 2.1%, the PEO CAP decreased by 15.9%, driven primarily by a new PEO in August 2022. In 2023, while the PEO CAP and the Average NEO CAP decreased by 27.7% and 78.9%, respectively, driven primarily by the impact on the fair value of outstanding equity awards of the fourth quarter 2023 Ameren stock price decline as a result of the unfavorable regulatory outcomes in Ameren Illinois’ natural gas and multi-year electric distribution rate review and grid plan proceedings, Ameren’s GAAP diluted EPS increased by 5.8%. In 2024, the PEO CAP and the Average NEO CAP increased by 132.1% and 602.2% respectively, and the Company’s adjusted (non-GAAP) diluted EPS increased by 5.7%. In 2025, the PEO CAP and the Average NEO CAP decreased by 2.7% and 15.3% respectively, and the Company’s adjusted (non-GAAP) diluted EPS increased by 8.6%. During the five-year period (2021-2025), the Company’s net income increased by 72.9%.
[MISSING IMAGE: bc_earnings-pn.jpg]
Except for 2024 and 2025, EPS amounts in the chart represent both Ameren’s GAAP diluted EPS and its adjusted (non-GAAP) diluted EPS. See Appendix A for a reconciliation of Ameren’s GAAP to adjusted (non-GAAP) EPS for 2024 and 2025.
       
Tabular List, Table
Additional Company-Selected Performance Measures
The following table represents the unranked list of the most important performance measures used to align compensation actually paid to the PEO and NEOs for 2025 to the performance of Ameren and its subsidiaries, including the Company. While these performance measures are the most important measures, additional measures were also considered to align the PEO and NEOs’ pay and performance as further described in the “Compensation Discussion and Analysis” section above.
​ Ameren Annual EPS ​
​ Ameren Three-Year TSR Ranking vs. the TSR Peer Group ​
​ Energy Transition metric ​
       
Net Income (Loss) $ 735,000,000 $ 620,000,000 $ 607,000,000 $ 513,000,000 $ 425,000,000
Company Selected Measure Amount | $ / shares 5.03 4.63 4.38 4.14 3.84
PEO Name Mr. Singh        
Measure:: 1          
Pay vs Performance Disclosure          
Name Ameren Annual EPS        
Non-GAAP Measure Description
(8)
Our named executive officers are compensated by Ameren in accordance with its executive compensation policies. The Company does not make independent decisions regarding the compensation of its executive officers. As a result, the company-selected measure included in this table is Ameren’s adjusted (non-GAAP) diluted EPS for the respective year, which reflects the financial performance measure that in Ameren’s assessment represents the most important financial measure used to link compensation actually paid for the most recently completed fiscal year to company performance. Except for 2024 and 2025, values reported represent Ameren’s GAAP diluted EPS and adjusted (non-GAAP) diluted EPS. See Appendix A for a reconciliation of GAAP to adjusted (non-GAAP) EPS for 2024 and 2025.
       
Measure:: 2          
Pay vs Performance Disclosure          
Name Ameren Three-Year TSR Ranking vs. the TSR Peer Group        
Measure:: 3          
Pay vs Performance Disclosure          
Name Energy Transition metric        
Adjustment To Compensation Fair Value Of Equity Awards Valuation Assumptions Used For Performance Period 2025-2027 [Member]          
Pay vs Performance Disclosure          
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate 3.47%        
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate 17.19%        
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Range for Peer Group, Minimum 16.30%        
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Range for Peer Group, Maximum 25.64%        
Adjustment To Compensation Fair Value Of Equity Awards Valuation Assumptions Used For Performance Period 2024-2026 [Member]          
Pay vs Performance Disclosure          
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate 3.48% 4.25%      
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate 17.34% 19.77%      
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Range for Peer Group, Minimum 16.71% 17.27%      
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Range for Peer Group, Maximum 27.48% 23.80%      
Adjustment To Compensation Fair Value Of Equity Awards Valuation Assumptions Used For Performance Period 2023-2028 [Member]          
Pay vs Performance Disclosure          
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate 3.54% 4.32% 3.85%    
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate 18.93% 19.82% 26.20%    
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Range for Peer Group, Minimum 17.19% 18.15% 24.49%    
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Range for Peer Group, Maximum 26.33% 22.91% 30.56%    
Adjustment To Compensation Fair Value Of Equity Awards Valuation Assumptions Used For Performance Period 2023-2025 [Member]          
Pay vs Performance Disclosure          
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate   4.16% 4.23%    
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate   17.05% 22.00%    
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Range for Peer Group, Minimum   15.08% 19.98%    
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Range for Peer Group, Maximum   23.65% 24.79%    
Mr. Mark [Member]          
Pay vs Performance Disclosure          
PEO Total Compensation Amount $ 1,884,831 $ 2,499,003
PEO Actually Paid Compensation Amount 463,937 $ 3,093,519
Mr. Singh [Member]          
Pay vs Performance Disclosure          
PEO Total Compensation Amount 3,591,742 2,727,870 2,702,682 2,108,814  
PEO Actually Paid Compensation Amount 4,251,012 $ 4,367,638 $ 1,881,829 $ 2,138,912  
Mr. Singh [Member] | Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member]          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount (1,730,861)        
Mr. Singh [Member] | Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member]          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount (171,913)        
Mr. Singh [Member] | Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member]          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 1,670,841        
Mr. Singh [Member] | Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member]          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 120,223        
Mr. Singh [Member] | Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member]          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 662,497        
PEO | Aggregate Pension Adjustments Service Cost [Member]          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 108,483        
Non-PEO NEO | Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member]          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount (3,380,151)        
Non-PEO NEO | Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member]          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount (296,192)        
Non-PEO NEO | Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member]          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 3,107,451        
Non-PEO NEO | Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member]          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 297,245        
Non-PEO NEO | Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member]          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 1,491,838        
Non-PEO NEO | Aggregate Pension Adjustments Service Cost [Member]          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount $ 159,782