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Other Comprehensive Income | 6 Months Ended
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Jun. 30, 2012
Statement of Income and Comprehensive Income [Abstract] |
Other Comprehensive Income Disclosure | Other Comprehensive Income The following table presents the tax effect allocated to each component of Other comprehensive income for each period presented:
| Before-Tax |  | Income Tax |  | Net-of-Tax
| Amount |  | Expense |  | Amount
Quarter ended June 30, 2012 |  |  |  |  |
Defined benefit pension plan and VEBAs: |  |  |  |  |
Reclassification adjustments: |  |  |  |  |
Amortization of net actuarial loss | $ | 0.7 |  |  | $ | (0.3 | ) |  | $ | 0.4 |
Amortization of prior service cost | 1.1 |  |  | (0.4 | ) |  | 0.7 |
Total income recognized in Accumulated other comprehensive loss related to defined benefit pension plan and VEBAs | 1.8 |  |  | (0.7 | ) |  | 1.1 |
Foreign currency translation adjustment | 0.4 |  |  | — |  |  | 0.4 |
Other comprehensive income | $ | 2.2 |  |  | $ | (0.7 | ) |  | $ | 1.5 |
Quarter ended June 30, 2011 |  |  |  |  |
Defined benefit pension plan and VEBAs: |  |  |  |  |
Reclassification adjustments: |  |  |  |  |
Amortization of net actuarial loss | $ | 0.2 |  |  | $ | (0.1 | ) |  | $ | 0.1 |
Amortization of prior service cost | 1.1 |  |  | (0.4 | ) |  | 0.7 |
Total income recognized in Accumulated other comprehensive loss related to defined benefit pension plan and VEBAs | 1.3 |  |  | (0.5 | ) |  | 0.8 |
Other comprehensive income | $ | 1.3 |  |  | $ | (0.5 | ) |  | $ | 0.8 |
Six months ended June 30, 2012 |  |  |  |  |
Defined benefit pension plan and VEBAs: |  |  |  |  |
Reclassification adjustments: |  |  |  |  |
Amortization of net actuarial loss | $ | 1.5 |  |  | $ | (0.6 | ) |  | $ | 0.9 |
Amortization of prior service cost | 2.1 |  |  | (0.8 | ) |  | 1.3 |
Total income recognized in Accumulated other comprehensive loss related to defined benefit pension plan and VEBAs | 3.6 |  |  | (1.4 | ) |  | 2.2 |
Unrealized gain on available for sale securities | 0.3 |  |  | — |  |  | 0.3 |
Foreign currency translation adjustment | 0.1 |  |  | — |  |  | 0.1 |
Other comprehensive income | $ | 4.0 |  |  | $ | (1.4 | ) |  | $ | 2.6 |
Six months ended June 30, 2011 |  |  |  |  |
Defined benefit pension plan and VEBAs: |  |  |  |  |
Reclassification adjustments: |  |  |  |  |
Amortization of net actuarial loss | $ | 0.3 |  |  | $ | (0.1 | ) |  | $ | 0.2 |
Amortization of prior service cost | 2.1 |  |  | (0.8 | ) |  | 1.3 |
Total income recognized in Accumulated other comprehensive income related to defined benefit pension plans | 2.4 |  |  | (0.9 | ) |  | 1.5 |
Foreign currency translation adjustment | (0.3 | ) |  | — |  |  | (0.3 | )
Other comprehensive income | $ | 2.1 |  |  | $ | (0.9 | ) |  | $ | 1.2 |

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- Definition Other Comprehensive Income (Loss) Disclosure [Text Block] + References No definition available. + Details
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- Details
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