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Other Comprehensive Income
 9 Months Ended
Sep. 30, 2012
Statement of Other 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 September 30, 2012
 
 
 
 
 
Defined benefit pension plan and VEBAs:
 
 
 
 
 
Reclassification adjustments:
 
 
 
 
 
  Amortization of net actuarial loss
$
0.8

 
$
(0.3
)
 
$
0.5

  Amortization of prior service cost
1.0

 
(0.4
)
 
0.6

Total income recognized in Accumulated other comprehensive income related to defined benefit pension plan and VEBAs
1.8

 
(0.7
)
 
1.1

Unrealized gain on available for sale securities
0.3

 
—

 
0.3

Foreign currency translation adjustment
(0.5
)
 
—

 
(0.5
)
Other comprehensive income
$
1.6

 
$
(0.7
)
 
$
0.9

 
 
 
 
 
 
Quarter Ended September 30, 2011
 
 
 
 
 
Defined benefit pension plan and VEBAs:
 
 
 
 
 
Reclassification adjustments:
 
 
 
 
 
  Amortization of net actuarial loss
$
0.1

 
$
(0.1
)
 
$
—

  Amortization of prior service cost
1.0

 
(0.4
)
 
0.6

Total income recognized in Accumulated other comprehensive income related to defined benefit pension plan and VEBAs
1.1

 
(0.5
)
 
0.6

Unrealized loss on available for sale securities
(0.3
)
 
—

 
(0.3
)
Foreign currency translation adjustment
0.8

 
—

 
0.8

Other comprehensive income
$
1.6

 
$
(0.5
)
 
$
1.1

 
 
 
 
 
 
Nine Months Ended September 30, 2012
 
 
 
 
 
Defined benefit pension plan and VEBAs:
 
 
 
 
 
Reclassification adjustments:
 
 
 
 
 
  Amortization of net actuarial loss
$
2.3

 
$
(0.9
)
 
$
1.4

  Amortization of prior service cost
3.1

 
(1.2
)
 
1.9

Total income recognized in Accumulated other comprehensive income related to defined benefit pension plan and VEBAs
5.4

 
(2.1
)
 
3.3

Unrealized gain on available for sale securities
0.6

 
—

 
0.6

Foreign currency translation adjustment
(0.4
)
 
—

 
(0.4
)
Other comprehensive income
$
5.6

 
$
(2.1
)
 
$
3.5

 
 
 
 
 
 
Nine Months Ended September 30, 2011
 
 
 
 
 
Defined benefit pension plan and VEBAs:
 
 
 
 
 
Reclassification adjustments:
 
 
 
 
 
  Amortization of net actuarial loss
$
0.4

 
$
(0.2
)
 
$
0.2

  Amortization of prior service cost
3.1

 
(1.2
)
 
1.9

Total income recognized in Accumulated other comprehensive income related to defined benefit pension plans
3.5

 
(1.4
)
 
2.1

Unrealized loss on available for sale securities

(0.3
)
 
—

 
(0.3
)
Foreign currency translation adjustment
0.5

 
—

 
0.5

Other comprehensive income
$
3.7

 
$
(1.4
)
 
$
2.3