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Reclassificiations Out of Accumulated Other Comprehensive Income (Loss) (Tables) | 9 Months Ended
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Sep. 30, 2015
Reclassifications Out of Accumualted Other Comprehensive Income (Loss) [Abstract] |
Changes in Accumulated Other Comprehensive Income (Loss) [Table Text Block] | Changes in accumulated other comprehensive income (loss), net of tax, for the nine months ended September 30, 2015 and 2014, were as follows:
| Unrealized Gains and Losses on Available-for-sale Securities | Defined Benefit Pension, Other Postretirement Items | Gains and Losses on Cash Flow Hedge | Total
Millions |  |  |  |
Nine Months Ended September 30, 2015 |  |  |  |
Beginning Accumulated Other Comprehensive Loss | $(0.3) | $(20.7) | $(0.1) | $(21.1)
Other Comprehensive Income (Loss) Before Reclassifications | (0.5) | 0.1 |  | 0.1 |  | (0.3 | )
Amounts Reclassified From Accumulated Other Comprehensive Loss | (0.1) | 0.9 |  | — |  | 0.8 |
Net Other Comprehensive Income (Loss) | (0.6) | 1.0 |  | 0.1 |  | 0.5 |
Ending Accumulated Other Comprehensive Loss | $(0.9) | $(19.7) | — |  | $(20.6)
Nine Months Ended September 30, 2014 |  |  |  |
Beginning Accumulated Other Comprehensive Loss | $(0.1) | $(16.7) | $(0.3) | $(17.1)
Other Comprehensive Income (Loss) Before Reclassifications | 0.2 |  | (0.1 | ) | 0.1 |  | 0.2 |
Amounts Reclassified From Accumulated Other Comprehensive Loss | (0.1 | ) | 0.9 |  | — |  | 0.8 |
Net Other Comprehensive Income | 0.1 |  | 0.8 |  | 0.1 |  | 1.0 |
Ending Accumulated Other Comprehensive Loss | — |  | $(15.9) | $(0.2) | $(16.1)
Changes in accumulated other comprehensive income (loss), net of tax, for the quarters ended September 30, 2015 and 2014, were as follows:
| Unrealized Gains and Losses on Available-for-sale Securities | Defined Benefit Pension, Other Postretirement Items | Gains and Losses on Cash Flow Hedge | Total
Millions |  |  |  |
Quarter Ended September 30, 2015 |  |  |  |
Beginning Accumulated Other Comprehensive Loss | $(0.2) | $(20.0) | — |  | $(20.2)
Other Comprehensive Loss Before Reclassifications | (0.7) | — |  | — |  | (0.7 | )
Amounts Reclassified From Accumulated Other Comprehensive Loss | — |  | 0.3 |  | — |  | 0.3 |
Net Other Comprehensive Income (Loss) | (0.7) | 0.3 |  | — |  | (0.4 | )
Ending Accumulated Other Comprehensive Loss | $(0.9) | $(19.7) | — |  | $(20.6)
Quarter Ended September 30, 2014 |  |  |  |
Beginning Accumulated Other Comprehensive Income (Loss) | $0.1 | $(16.1) | $(0.3) | $(16.3)
Other Comprehensive Income (Loss) Before Reclassifications | (0.1 | ) | (0.1 | ) | 0.1 |  | (0.1 | )
Amounts Reclassified From Accumulated Other Comprehensive Income (Loss) | — |  | 0.3 |  | — |  | 0.3 |
Net Other Comprehensive Income (Loss) | (0.1 | ) | 0.2 |  | 0.1 |  | 0.2 |
Ending Accumulated Other Comprehensive Loss | — |  | $(15.9) | $(0.2) | $(16.1)
Amount Reclassified from Accumulated Other Comprehensive Loss [Table Text Block] | Reclassifications from accumulated other comprehensive income (loss) for the nine months ended September 30, 2015 and 2014, were as follows:
| Nine Months Ended
Amount Reclassified from Accumulated Other Comprehensive Loss | September 30, | September 30,
2015 | 2014
Millions |  |
Unrealized Gains on Available-for-sale Securities (a) |  | $0.1 |  |  | $0.2 |
Income Taxes (b) | — |  | (0.1 | )
Total, Net of Income Taxes |  | $0.1 |  |  | $0.1 |
Amortization of Defined Benefit Pension and Other Postretirement Items |  |
Prior Service Costs (c) | $0.3 | $0.3
Actuarial Gains and Losses (c) | (1.9 | ) | (1.8 | )
Total | (1.6 | ) | (1.5 | )
Income Taxes (b) | 0.7 |  | 0.6 |
Total, Net of Income Taxes | $(0.9) | $(0.9)
Total Reclassifications | $(0.8) | $(0.8)
(a) | Included in Other Income (Expense) – Other on our Consolidated Statement of Income.
(b) | Included in Income Tax Expense on our Consolidated Statement of Income.
(c) | Defined benefit pension and other postretirement items excluded from our Regulated Operations are recognized in accumulated other comprehensive loss and are subsequently reclassified out of accumulated other comprehensive loss as components of net periodic pension and other postretirement benefit expense. (See Note 14. Pension and Other Postretirement Benefit Plans.)
Reclassifications from accumulated other comprehensive income (loss) for the quarters ended September 30, 2015 and 2014, were as follows:
| Quarter Ended
Amount Reclassified from Accumulated Other Comprehensive Loss | September 30, | September 30,
2015 | 2014
Millions |  |
Amortization of Defined Benefit Pension and Other Postretirement Items |  |
Prior Service Costs (a) | $0.1 | $0.1
Actuarial Gains and Losses (a) | (0.6) | (0.6 | )
Total | (0.5 | ) | (0.5 | )
Income Taxes (b) | 0.2 |  | 0.2 |
Total, Net of Income Taxes | $(0.3) | $(0.3)
Total Reclassifications | $(0.3) | $(0.3)
(a) | Defined benefit pension and other postretirement items excluded from our Regulated Operations are recognized in accumulated other comprehensive loss and are subsequently reclassified out of accumulated other comprehensive loss as components of net periodic pension and other postretirement benefit expense. (See Note 14. Pension and Other Postretirement Benefit Plans.)
(b) | Included in Income Tax Expense on our Consolidated Statement of Income.

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- Definition Reclassifications Out of Accumualted Other Comprehensive Income [Abstract] + References No definition available. + Details
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- Definition Tabular disclosure of information about items reclassified out of accumulated other comprehensive income (loss). + References No definition available. + Details
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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669686-108580 + Details
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