| **Comprehensive Income**            | 9 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
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| **Comprehensive Income [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
| Comprehensive Income                | (15) Comprehensive Income: Comprehensive income consists of net income and other gains and losses affecting shareholders' investment and pension/OPEB liabilities that, under U.S. GAAP, are excluded from net income.The components of accumulated other comprehensive loss, net of tax are as follows:   September 30,  December 31, ($ in thousands) 2012  2011         Pension costs $552,895  $575,163 Postretirement costs  43,709   41,811 Deferred taxes on pension and OPEB costs  (221,931)  (230,161)All other  148   150    $374,821  $386,963             Our other comprehensive income for the three and nine months ended September 30, 2012 and 2011 is as follows:    For the three months ended September 30,     2012   2011    Before-Tax  Tax Expense/ Net-of-Tax  Before-Tax  Tax Expense/  Net-of-Tax ($ in thousands) Amount  (Benefit)  Amount  Amount  (Benefit)  Amount                     Amortization of pension and postretirement costs -                  other comprehensive income $6,080  $3,772  $2,308  $3,334  $-  $3,334                               For the nine months ended September 30,     2012   2011    Before-Tax  Tax Expense/ Net-of-Tax  Before-Tax  Tax Expense/  Net-of-Tax    Amount  (Benefit)  Amount  Amount  (Benefit)  Amount                           Amortization of pension and postretirement costs $20,370  $8,228  $12,142  $10,003  $1,199  $8,804 All other  -   -   -   (480)  -   (480)Other comprehensive income $20,370  $8,228  $12,142  $9,523  $1,199  $8,324                             |

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| - Definition
The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income.
+ References
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