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Pay vs Performance Disclosure - USD ($)
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Pay vs Performance Disclosure [Table]      
Pay vs Performance [Table Text Block]
 
PAY VERSUS PERFORMANCE
As required by Item 402(v) of Regulation S-K, we are providing the following information on the relationship between Compensation Actually Paid (CAP) and PPL’s performance for our NEOs, including our principal executive officer. CAP is defined by the SEC and is not used by the Compensation Committee in its pay-for-performance assessments. See the Compensation Discussion and Analysis section for a discussion of PPL’s compensation philosophy, practices and programs.
PPL’s executive compensation programs are structured to promote a strong pay for performance culture. As noted in the CD&A, 85% of the CEO’s 2022 target compensation was “at-risk” and 72% was performance based. In June 2020, William H. Spence retired from his position as CEO, therefore he is included in the Pay versus Performance Tables as our former CEO. Mr. Sorgi was promoted to the position of President and CEO effective June 1, 2020.
In 2021, PPL reported GAAP Net Income losses for the year that were non-cash in nature and primarily related to the sale of the U.K. utility business in June 2021 and certain tax changes in the U.K. Excluding the accounting effect of these one-time events, PPL’s operating businesses and PPL on a consolidated basis had strong financial and operational performance in 2021.
Based on our approach to align executive pay closely with performance, PPL’s CAP is directionally aligned with PPL’s Corporate EPS, total shareowner return (TSR), and return on equity. For example, PPL’s TSR declined by approximately 5% over the three-year measurement period, while CEO CAP (relative to Summary Compensation Table disclosure) declined by approximately 10% overall over this three-year period. See the table below for more details followed by a description of the relationship between CAP and select performance metrics.
Pay Versus Performance Table
 
Year
 
SCT Total
for CEO
(1)
   
Comp
Actually
Paid to
CEO
(1)(5)
   
SCT Total
for
Former
CEO
(2)
   
Comp
Actually
Paid to
Former
CEO
(2)(5)
   
Average SCT
total for Non-
CEO NEOs
(3)
   
Average
Comp
Actually Paid
to Non-CEO
NEOs
(3)(5)
   
Value of initial fixed $100
investment based on:
   
Net Income
(millions)
   
Corporate
EPS
(6)
 
 
Company
TSR
   
Peer
TSR
(4)
 
2022
  $ 9,146,575     $ 9,088,623        
 
     
 
 
$2,706,259    
$2,888,926       $95               $117              $    756             $1.41      
2021
    11,356,481       11,504,637        
 
     
 
    3,976,822       3,779,539       94               116             
-1,480      
      1.02      
2020
    7,774,443       5,057,638     $ 9,926,113     $ 569,444       3,743,503       1,635,344       84               99              1,469             2.49      
Current CEO Compensation Reconciliation Footnotes
 
(1)
 
SCT Totals and CAP Totals for CEO include Mr. Sorgi, President and Chief Executive
Of
ficer. A reconciliation of total compensation from the Summary Compensation Table to CAP for our CEO is provided in the following tables:
 
Year
 
SCT Total
for CEO
   
Total Equity
Adjustment
   
Total Pension
Benefit
Adjustment
   
CAP Total for
CEO
   
Total
Adjustment
   
Equity   
Driven   
 
Pension   
Driven   
2022
  $ 9,146,575    
$
-129,755
 
 
$
71,803
 
  $ 9,088,623     $ -57,952     64%    36% 
2021
    11,356,481    
 
1,778,997
 
 
 
-1,630,841
 
    11,504,637       148,156     52%    48% 
2020
    7,774,443    
 
-1,160,073
 
 
 
-1,556,732
 
    5,057,638       -2,716,805     43%    57% 
The following provides the adjustments for equity compensation:
 
Year
 
SCT Total
   
SCT Equity
Total
   
Fair Value of
Equity Granted
during FY at FYE
   
Change in Value
of Prior Awards
Unvested
at FYE
   
Change in Value
of Prior Awards
Vested in FY
   
Equity Value
Included in CAP
   
Total Equity
Adjustment
 
2022
  $ 9,146,575       $5,926,933       $6,576,826           
$-222,115     
     
$-557,533     
      $5,797,178         
$
-129,755
 
2021
    11,356,481       5,111,866       6,926,098            120,260           
-155,495     
      6,890,863         
 
1,778,997
 
2020
    7,774,443       3,514,187       3,653,495           
-820,292     
     
-479,089     
      2,354,114         
 
-1,160,073
 
 
 
 
The following provides the adjustments for pension and defined benefit plan compensation:
 
Year
 
SCT Total
   
SCT Change in
Pension Value
   
CAP Pension
Service Cost
   
Total
Pension
Benefit
Adjustment
 
2022
 
$
9,146,575
 
 
 
$               0
 
 
 
$  71,803
 
 
$
71,803
 
2021
 
 
11,356,481
 
 
 
2,361,092
 
 
 
730,251
 
 
 
-1,630,841
 
2020
 
 
7,774,443
 
 
 
1,940,207
 
 
 
383,475
 
 
 
-1,556,732
 
Former CEO Compensation Reconciliation Footnotes
 
(2)
 
SCT Totals and CAP Totals for Former CEO include Mr. Spence, Former Chief Executive Officer. A reconciliation of total compensation from the Summary Compensation Table to CAP for our Former CEO is provided in the following tables:
 
Year
 
SCT Total
for Former
CEO
   
Total Equity
Adjustment
   
Total
Pension
Benefit
Adjustment
   
CAP Total
for Former
CEO
   
Total
Adjustment
   
Equity
Driven
   
Pension
Driven
 
2022
     
 
     
 
     
 
     
 
     
 
     
 
       
2021
     
 
     
 
     
 
     
 
     
 
     
 
       
2020
 
 $9,926,113    
 $-7,744,198
 
 
 $-1,612,471
 
    $569,444    
 $-9,356,669
      83%       17%  
The following provides the adjustments for equity compensation:
 
Year
 
SCT Total
   
SCT Equity
Total
   
Fair Value
of Equity
Granted
during FY
at FYE
   
Change in
Value of
Prior
Awards
Unvested
at FYE
   
Change in
Value of
Prior
Awards
Vested in FY
   
Equity Value
Included in
CAP
   
Total Equity
Adjustment
 
2022
     
 
     
 
     
 
     
 
     
 
     
 
       
2021
     
 
     
 
     
 
     
 
     
 
     
 
       
2020
 
$9,926,113    
$5,707,265    
$3,054,993    
$-2,565,682    
$-2,526,244    
$-2,036,933    
$-7,744,198
 
The following provides the adjustments for pension and defined benefit plan compensation:
 
Year
 
SCT Total
   
SCT Change in
Pension Value
   
CAP Pension
Service Cost
   
Total Pension
Benefit Adjustment
 
2022
     
 
     
 
     
 
       
2021
     
 
     
 
     
 
       
2020
 

$9,926,113
 
 
 
$2,572,270
 
 
 
$959,799
 
 
 
$-1,612,471
 
Non-CEO NEO Compensation Reconciliati
on
Footnotes
 
(3)
 
Average SCT Totals and Average CAP Totals for Non-CEO NEOs include Messrs. Bergstein, Thompson, Dudkin and Ms. Raphael for 2020; Messrs. Bergstein, Dudkin, Thompson, Swift and Ms. Stark for 2021; and Messrs. Bergstein, Dudkin, Crockett and Ms. Stark for 2022.
 
Year
 
SCT Total
for Non-
CEO NEOs
   
Total
Equity
Adjustment
   
Total
Pension
Benefit
Adjustment
   
CAP Total
for CEO
   
Total
Adjustment
   
   Equity   
   Driven   
 
Pension
Driven
2022
    $2,706,259      
 
$    23,558 
 
 
 
$     159,109  
 
    $2,888,926        $     182,667       13%   87%
2021
    3,976,822      
 
253,256 
 
 
 
-450,539  
 
    3,779,539        -197,283       36%   64%
2020
    3,743,503      
 
-812,826 
 
 
 
-1,295,333  
 
    1,635,344        -2,108,159       39%   61%
 
 
 
The following provides the adjustments f
or
equity compensation:
 
Year
 
SCT Total
   
SCT Equity
Total
   
Fair Value
of Equity
Granted
during FY
at FYE
   
Change in
Value of
Prior
Awards
Unvested
at FYE
   
Change in
Value of
Prior
Awards
Vested
in FY
   
Cash
Dividends
Paid
during
FY
(a)
   
Equity
Value
Included in
CAP
   
Total
Equity
Adjustment
 
2022
    $2,706,259         $1,431,279         $1,588,222        
$  -45,074  
     
$   -89,392  
      $1,082         $1,454,837      
 
$    23,558  
 
2021
    3,976,822         1,115,932         1,289,371         26,497         52,120         1,199         1,369,187      
 
253,256  
 
2020
    3,743,503         1,108,663         1,016,334        
-422,772  
     
-298,929  
      1,204         295,837      
 
-812,826  
 
 
(a)
Certain non-CEO NEOs received cash dividends for awards granted under the applicable plan.
The following provides the adjustments for pension and defined benefit plan compe
ns
ation:
 
Year
 
SCT Total
   
SCT Change in
Pension Value
   
CAP Pension
Service Cost
   
Total Pension
Benefit Adjustment
 
2022
 
 
$2,706,259
 
 
 
$                0    
 
 
 
$159,109    
 
 
 
$     159,109      
 
2021
 
 
3,976,822
 
 
 
588,280    
 
 
 
137,741    
 
 
 
-450,539      
 
2020
 
 
3,743,503
 
 
 
1,462,632    
 
 
 
167,299    
 
 
 
-1,295,333      
 
 
(4)
 
TSR assumes $100 invested on December 31, 2019, including reinvestment of dividends. Peer TSR represents the EEI Index of Investor-owned Electric Utilities, which is the index used to show performance in our Annual Report.
 
(5)
 
In calculating CAP, PPL calculated the fair value (or change in fair value) of outstanding, vested and forfeited equity awards in accordance with SEC rules for CAP and computed in a manner consistent with the methodology for financial reporting purposes consistent with U.S. generally accepted accounting principles. For restricted stock units, CAP values are based on a closing price on applicable year-end date(s) or, in the case of vesting dates, the actual vesting price. For performance units (excluding TSR Awards), CAP values are based on the same valuation methodology as restricted stock unit awards above except year-end values are multiplied times the probability of achievement as of each such date. For TSR-based performance units, the fair value is calculated by a Monte Carlo simulation model that considers stock beta, a risk-free interest rate, expected stock volatility and expected life as of the applicable year-end date(s). For more information about PPL’s share-based accounting, see Note 11 of Notes to Consolidated Financial Statements contained in PPL’s Annual Report for the year ended December 31, 2022.
 
(6)
 
Corporate EPS as adjusted for compensation purposes. See page 42 for more information on Corporate EPS and its use in our short-term incentive plans.
   
Company Selected Measure Name Corporate EPS    
Named Executive Officers, Footnote [Text Block] Average SCT Totals and Average CAP Totals for Non-CEO NEOs include Messrs. Bergstein, Thompson, Dudkin and Ms. Raphael for 2020; Messrs. Bergstein, Dudkin, Thompson, Swift and Ms. Stark for 2021; and Messrs. Bergstein, Dudkin, Crockett and Ms. Stark for 2022.    
Peer Group Issuers, Footnote [Text Block] Peer TSR represents the EEI Index of Investor-owned Electric Utilities, which is the index used to show performance in our Annual Report.    
Adjustment To PEO Compensation, Footnote [Text Block]
 
(1)
 
SCT Totals and CAP Totals for CEO include Mr. Sorgi, President and Chief Executive
Of
ficer. A reconciliation of total compensation from the Summary Compensation Table to CAP for our CEO is provided in the following tables:
 
Year
 
SCT Total
for CEO
   
Total Equity
Adjustment
   
Total Pension
Benefit
Adjustment
   
CAP Total for
CEO
   
Total
Adjustment
   
Equity   
Driven   
 
Pension   
Driven   
2022
  $ 9,146,575    
$
-129,755
 
 
$
71,803
 
  $ 9,088,623     $ -57,952     64%    36% 
2021
    11,356,481    
 
1,778,997
 
 
 
-1,630,841
 
    11,504,637       148,156     52%    48% 
2020
    7,774,443    
 
-1,160,073
 
 
 
-1,556,732
 
    5,057,638       -2,716,805     43%    57% 
The following provides the adjustments for equity compensation:
 
Year
 
SCT Total
   
SCT Equity
Total
   
Fair Value of
Equity Granted
during FY at FYE
   
Change in Value
of Prior Awards
Unvested
at FYE
   
Change in Value
of Prior Awards
Vested in FY
   
Equity Value
Included in CAP
   
Total Equity
Adjustment
 
2022
  $ 9,146,575       $5,926,933       $6,576,826           
$-222,115     
     
$-557,533     
      $5,797,178         
$
-129,755
 
2021
    11,356,481       5,111,866       6,926,098            120,260           
-155,495     
      6,890,863         
 
1,778,997
 
2020
    7,774,443       3,514,187       3,653,495           
-820,292     
     
-479,089     
      2,354,114         
 
-1,160,073
 
 
 
 
The following provides the adjustments for pension and defined benefit plan compensation:
 
Year
 
SCT Total
   
SCT Change in
Pension Value
   
CAP Pension
Service Cost
   
Total
Pension
Benefit
Adjustment
 
2022
 
$
9,146,575
 
 
 
$               0
 
 
 
$  71,803
 
 
$
71,803
 
2021
 
 
11,356,481
 
 
 
2,361,092
 
 
 
730,251
 
 
 
-1,630,841
 
2020
 
 
7,774,443
 
 
 
1,940,207
 
 
 
383,475
 
 
 
-1,556,732
 
Former CEO Compensation Reconciliation Footnotes
 
(2)
 
SCT Totals and CAP Totals for Former CEO include Mr. Spence, Former Chief Executive Officer. A reconciliation of total compensation from the Summary Compensation Table to CAP for our Former CEO is provided in the following tables:
 
Year
 
SCT Total
for Former
CEO
   
Total Equity
Adjustment
   
Total
Pension
Benefit
Adjustment
   
CAP Total
for Former
CEO
   
Total
Adjustment
   
Equity
Driven
   
Pension
Driven
 
2022
     
 
     
 
     
 
     
 
     
 
     
 
       
2021
     
 
     
 
     
 
     
 
     
 
     
 
       
2020
 
 $9,926,113    
 $-7,744,198
 
 
 $-1,612,471
 
    $569,444    
 $-9,356,669
      83%       17%  
The following provides the adjustments for equity compensation:
 
Year
 
SCT Total
   
SCT Equity
Total
   
Fair Value
of Equity
Granted
during FY
at FYE
   
Change in
Value of
Prior
Awards
Unvested
at FYE
   
Change in
Value of
Prior
Awards
Vested in FY
   
Equity Value
Included in
CAP
   
Total Equity
Adjustment
 
2022
     
 
     
 
     
 
     
 
     
 
     
 
       
2021
     
 
     
 
     
 
     
 
     
 
     
 
       
2020
 
$9,926,113    
$5,707,265    
$3,054,993    
$-2,565,682    
$-2,526,244    
$-2,036,933    
$-7,744,198
 
The following provides the adjustments for pension and defined benefit plan compensation:
 
Year
 
SCT Total
   
SCT Change in
Pension Value
   
CAP Pension
Service Cost
   
Total Pension
Benefit Adjustment
 
2022
     
 
     
 
     
 
       
2021
     
 
     
 
     
 
       
2020
 

$9,926,113
 
 
 
$2,572,270
 
 
 
$959,799
 
 
 
$-1,612,471
 
   
Non-PEO NEO Average Total Compensation Amount $ 2,706,259 $ 3,976,822 $ 3,743,503
Non-PEO NEO Average Compensation Actually Paid Amount $ 2,888,926 3,779,539 1,635,344
Adjustment to Non-PEO NEO Compensation Footnote [Text Block]
 
(3)
 
Average SCT Totals and Average CAP Totals for Non-CEO NEOs include Messrs. Bergstein, Thompson, Dudkin and Ms. Raphael for 2020; Messrs. Bergstein, Dudkin, Thompson, Swift and Ms. Stark for 2021; and Messrs. Bergstein, Dudkin, Crockett and Ms. Stark for 2022.
 
Year
 
SCT Total
for Non-
CEO NEOs
   
Total
Equity
Adjustment
   
Total
Pension
Benefit
Adjustment
   
CAP Total
for CEO
   
Total
Adjustment
   
   Equity   
   Driven   
 
Pension
Driven
2022
    $2,706,259      
 
$    23,558 
 
 
 
$     159,109  
 
    $2,888,926        $     182,667       13%   87%
2021
    3,976,822      
 
253,256 
 
 
 
-450,539  
 
    3,779,539        -197,283       36%   64%
2020
    3,743,503      
 
-812,826 
 
 
 
-1,295,333  
 
    1,635,344        -2,108,159       39%   61%
 
 
 
The following provides the adjustments f
or
equity compensation:
 
Year
 
SCT Total
   
SCT Equity
Total
   
Fair Value
of Equity
Granted
during FY
at FYE
   
Change in
Value of
Prior
Awards
Unvested
at FYE
   
Change in
Value of
Prior
Awards
Vested
in FY
   
Cash
Dividends
Paid
during
FY
(a)
   
Equity
Value
Included in
CAP
   
Total
Equity
Adjustment
 
2022
    $2,706,259         $1,431,279         $1,588,222        
$  -45,074  
     
$   -89,392  
      $1,082         $1,454,837      
 
$    23,558  
 
2021
    3,976,822         1,115,932         1,289,371         26,497         52,120         1,199         1,369,187      
 
253,256  
 
2020
    3,743,503         1,108,663         1,016,334        
-422,772  
     
-298,929  
      1,204         295,837      
 
-812,826  
 
 
(a)
Certain non-CEO NEOs received cash dividends for awards granted under the applicable plan.
The following provides the adjustments for pension and defined benefit plan compe
ns
ation:
 
Year
 
SCT Total
   
SCT Change in
Pension Value
   
CAP Pension
Service Cost
   
Total Pension
Benefit Adjustment
 
2022
 
 
$2,706,259
 
 
 
$                0    
 
 
 
$159,109    
 
 
 
$     159,109      
 
2021
 
 
3,976,822
 
 
 
588,280    
 
 
 
137,741    
 
 
 
-450,539      
 
2020
 
 
3,743,503
 
 
 
1,462,632    
 
 
 
167,299    
 
 
 
-1,295,333      
 
   
Compensation Actually Paid vs. Total Shareholder Return [Text Block] LOGO       
Compensation Actually Paid vs. Net Income [Text Block] LOGO    
Compensation Actually Paid vs. Company Selected Measure [Text Block] LOGO    
Total Shareholder Return Vs Peer Group [Text Block] LOGO       
Tabular List [Table Text Block]
List of Company Selected Measures
 
The following table highlights PPL’s performance measures that are
most closely tied to executive compensation as reported in the Pay
vs. Performance Table above. See page 42 for more information on
Corporate EPS and Operational Goals and how they are utilized in
our short-term incentive plans and Annex A for a reconciliation of
financial measures presented in accordance with GAAP to non-
GAAP measures used for compensation. See page 42 for more
information on TSR and ROE as well as EG and ESG, newly added
measures utilized in our LTI plans.
 
 
        Most Important Performance Measures
(alphabetical ranking)
 
 
 
    
 
 
 
Corporate Earnings Per Share
 
   
 
 
Earnings Growth
 
   
 
 
Environmental, Socal and Governance
 
   
 
 
Operational Goals
 
   
 
 
Relative Total Shareowner Return
 
   
 
 
Return on Equity
 
 
 
 
 
   
Total Shareholder Return Amount $ 95 94 84
Peer Group Total Shareholder Return Amount 117 116 99
Net Income (Loss) $ 756,000,000 $ (1,480,000,000) $ 1,469,000,000
Company Selected Measure Amount 1.41 1.02 2.49
Additional 402(v) Disclosure [Text Block] As required by Item 402(v) of Regulation S-K, we are providing the following information on the relationship between Compensation Actually Paid (CAP) and PPL’s performance for our NEOs, including our principal executive officer. CAP is defined by the SEC and is not used by the Compensation Committee in its pay-for-performance assessments. See the Compensation Discussion and Analysis section for a discussion of PPL’s compensation philosophy, practices and programs.    
Measure [Axis]: 1      
Pay vs Performance Disclosure [Table]      
Measure Name Corporate Earnings Per Share    
Non-GAAP Measure Description [Text Block] Corporate EPS as adjusted for compensation purposes. See page 42 for more information on Corporate EPS and its use in our short-term incentive plans.    
Measure [Axis]: 2      
Pay vs Performance Disclosure [Table]      
Measure Name Earnings Growth    
Measure [Axis]: 3      
Pay vs Performance Disclosure [Table]      
Measure Name Environmental, Socal and Governance    
Measure [Axis]: 4      
Pay vs Performance Disclosure [Table]      
Measure Name Operational Goals    
Measure [Axis]: 5      
Pay vs Performance Disclosure [Table]      
Measure Name Relative Total Shareowner Return    
Measure [Axis]: 6      
Pay vs Performance Disclosure [Table]      
Measure Name Return on Equity    
Mr. Sorgi [Member]      
Pay vs Performance Disclosure [Table]      
PEO Total Compensation Amount $ 9,146,575 $ 11,356,481 $ 7,774,443
PEO Actually Paid Compensation Amount $ 9,088,623 $ 11,504,637 5,057,638
PEO Name Mr. Sorgi    
Mr. Spence [Member]      
Pay vs Performance Disclosure [Table]      
PEO Total Compensation Amount     9,926,113
PEO Actually Paid Compensation Amount     $ 569,444
PEO Name Mr. Spence    
PEO [Member] | Mr. Sorgi [Member]      
Pay vs Performance Disclosure [Table]      
Equity Driven 64.00% 52.00% 43.00%
Pension Driven 36.00% 48.00% 57.00%
PEO [Member] | Mr. Sorgi [Member] | Total Equity Adjustment [Member]      
Pay vs Performance Disclosure [Table]      
Adjustment to Compensation Amount $ (129,755) $ 1,778,997 $ (1,160,073)
PEO [Member] | Mr. Sorgi [Member] | Total Pension Benefit Adjustment [Member]      
Pay vs Performance Disclosure [Table]      
Adjustment to Compensation Amount 71,803 (1,630,841) (1,556,732)
PEO [Member] | Mr. Sorgi [Member] | Total Adjustment [Member]      
Pay vs Performance Disclosure [Table]      
Adjustment to Compensation Amount (57,952) 148,156 (2,716,805)
PEO [Member] | Mr. Sorgi [Member] | SCT Equity Total [Member]      
Pay vs Performance Disclosure [Table]      
Adjustment to Compensation Amount 5,926,933 5,111,866 3,514,187
PEO [Member] | Mr. Sorgi [Member] | Fair Value of Equity Granted during Fiscal Year At Fiscal Year End [Member]      
Pay vs Performance Disclosure [Table]      
Adjustment to Compensation Amount 6,576,826 6,926,098 3,653,495
PEO [Member] | Mr. Sorgi [Member] | Change In Value Of Prior Awards Unvested At Fiscal Year End [Member]      
Pay vs Performance Disclosure [Table]      
Adjustment to Compensation Amount (222,115) 120,260 (820,292)
PEO [Member] | Mr. Sorgi [Member] | Change In Value Of Prior Awards Vested In Fiscal Year [Member]      
Pay vs Performance Disclosure [Table]      
Adjustment to Compensation Amount (557,533) (155,495) (479,089)
PEO [Member] | Mr. Sorgi [Member] | Equity Value Included in CAP [Member]      
Pay vs Performance Disclosure [Table]      
Adjustment to Compensation Amount 5,797,178 6,890,863 2,354,114
PEO [Member] | Mr. Sorgi [Member] | SCT Change In Pension Value [Member]      
Pay vs Performance Disclosure [Table]      
Adjustment to Compensation Amount 0 2,361,092 1,940,207
PEO [Member] | Mr. Sorgi [Member] | CAP Pension Service Cost [Member]      
Pay vs Performance Disclosure [Table]      
Adjustment to Compensation Amount $ 71,803 $ 730,251 $ 383,475
PEO [Member] | Mr. Spence [Member]      
Pay vs Performance Disclosure [Table]      
Equity Driven     83.00%
Pension Driven     17.00%
PEO [Member] | Mr. Spence [Member] | Total Equity Adjustment [Member]      
Pay vs Performance Disclosure [Table]      
Adjustment to Compensation Amount     $ (7,744,198)
PEO [Member] | Mr. Spence [Member] | Total Pension Benefit Adjustment [Member]      
Pay vs Performance Disclosure [Table]      
Adjustment to Compensation Amount     (1,612,471)
PEO [Member] | Mr. Spence [Member] | Total Adjustment [Member]      
Pay vs Performance Disclosure [Table]      
Adjustment to Compensation Amount     (9,356,669)
PEO [Member] | Mr. Spence [Member] | SCT Equity Total [Member]      
Pay vs Performance Disclosure [Table]      
Adjustment to Compensation Amount     5,707,265
PEO [Member] | Mr. Spence [Member] | Fair Value of Equity Granted during Fiscal Year At Fiscal Year End [Member]      
Pay vs Performance Disclosure [Table]      
Adjustment to Compensation Amount     3,054,993
PEO [Member] | Mr. Spence [Member] | Change In Value Of Prior Awards Unvested At Fiscal Year End [Member]      
Pay vs Performance Disclosure [Table]      
Adjustment to Compensation Amount     (2,565,682)
PEO [Member] | Mr. Spence [Member] | Change In Value Of Prior Awards Vested In Fiscal Year [Member]      
Pay vs Performance Disclosure [Table]      
Adjustment to Compensation Amount     (2,526,244)
PEO [Member] | Mr. Spence [Member] | Equity Value Included in CAP [Member]      
Pay vs Performance Disclosure [Table]      
Adjustment to Compensation Amount     (2,036,933)
PEO [Member] | Mr. Spence [Member] | SCT Change In Pension Value [Member]      
Pay vs Performance Disclosure [Table]      
Adjustment to Compensation Amount     2,572,270
PEO [Member] | Mr. Spence [Member] | CAP Pension Service Cost [Member]      
Pay vs Performance Disclosure [Table]      
Adjustment to Compensation Amount     $ 959,799
Non-PEO NEO [Member]      
Pay vs Performance Disclosure [Table]      
Equity Driven 13.00% 36.00% 39.00%
Pension Driven 87.00% 64.00% 61.00%
Non-PEO NEO [Member] | Total Equity Adjustment [Member]      
Pay vs Performance Disclosure [Table]      
Adjustment to Compensation Amount $ 23,558 $ 253,256 $ (812,826)
Non-PEO NEO [Member] | Total Pension Benefit Adjustment [Member]      
Pay vs Performance Disclosure [Table]      
Adjustment to Compensation Amount 159,109 (450,539) (1,295,333)
Non-PEO NEO [Member] | Total Adjustment [Member]      
Pay vs Performance Disclosure [Table]      
Adjustment to Compensation Amount 182,667 (197,283) (2,108,159)
Non-PEO NEO [Member] | SCT Equity Total [Member]      
Pay vs Performance Disclosure [Table]      
Adjustment to Compensation Amount 1,431,279 1,115,932 1,108,663
Non-PEO NEO [Member] | Fair Value of Equity Granted during Fiscal Year At Fiscal Year End [Member]      
Pay vs Performance Disclosure [Table]      
Adjustment to Compensation Amount 1,588,222 1,289,371 1,016,334
Non-PEO NEO [Member] | Change In Value Of Prior Awards Unvested At Fiscal Year End [Member]      
Pay vs Performance Disclosure [Table]      
Adjustment to Compensation Amount (45,074) 26,497 (422,772)
Non-PEO NEO [Member] | Change In Value Of Prior Awards Vested In Fiscal Year [Member]      
Pay vs Performance Disclosure [Table]      
Adjustment to Compensation Amount (89,392) 52,120 (298,929)
Non-PEO NEO [Member] | Cash Dividends Paid During Fiscal Year [Member]      
Pay vs Performance Disclosure [Table]      
Adjustment to Compensation Amount 1,082 1,199 1,204
Non-PEO NEO [Member] | Equity Value Included in CAP [Member]      
Pay vs Performance Disclosure [Table]      
Adjustment to Compensation Amount 1,454,837 1,369,187 295,837
Non-PEO NEO [Member] | SCT Change In Pension Value [Member]      
Pay vs Performance Disclosure [Table]      
Adjustment to Compensation Amount 0 588,280 1,462,632
Non-PEO NEO [Member] | CAP Pension Service Cost [Member]      
Pay vs Performance Disclosure [Table]      
Adjustment to Compensation Amount $ 159,109 $ 137,741 $ 167,299