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Accumulated Other Comprehensive Loss | 3 Months Ended
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Mar. 31, 2017
Other Comprehensive Income (Loss), Tax [Abstract] |
Accumulated Other Comprehensive Loss | Accumulated Other Comprehensive Loss The following tables display the components of Accumulated Other Comprehensive Loss:
Three Months Ended March 31, 2017 (in millions) | Gains and Losses on Securities(1) |  | Gains and Losses on Cash Flow Hedges(1) |  | Pension and OPEB Items(1) |  | Accumulated Other Comprehensive Loss(1)
Balance as of January 1, 2017 | $ | (0.6 | ) |  | $ | (6.9 | ) |  | $ | (17.6 | ) |  | $ | (25.1 | )
Other comprehensive income before reclassifications | 0.2 |  |  | 4.6 |  |  | 0.1 |  |  | 4.9 |
Amounts reclassified from accumulated other comprehensive loss | 0.2 |  |  | 0.3 |  |  | 0.1 |  |  | 0.6 |
Net current-period other comprehensive income | 0.4 |  |  | 4.9 |  |  | 0.2 |  |  | 5.5 |
Balance as of March 31, 2017 | $ | (0.2 | ) |  | $ | (2.0 | ) |  | $ | (17.4 | ) |  | $ | (19.6 | )
Three Months Ended March 31, 2016 (in millions) | Gains and Losses on Securities(1) |  | Gains and Losses on Cash Flow Hedges(1) |  | Pension and OPEB Items(1) |  | Accumulated Other Comprehensive Loss(1)
Balance as of January 1, 2016 | $ | (0.5 | ) |  | $ | (15.5 | ) |  | $ | (19.1 | ) |  | $ | (35.1 | )
Other comprehensive income (loss) before reclassifications | 1.7 |  |  | (71.2 | ) |  | 0.1 |  |  | (69.4 | )
Amounts reclassified from accumulated other comprehensive loss | — |  |  | 0.5 |  |  | 0.2 |  |  | 0.7 |
Net current-period other comprehensive income (loss) | 1.7 |  |  | (70.7 | ) |  | 0.3 |  |  | (68.7 | )
Balance as of March 31, 2016 | $ | 1.2 |  |  | $ | (86.2 | ) |  | $ | (18.8 | ) |  | $ | (103.8 | )
(1)All amounts are net of tax. Amounts in parentheses indicate debits.

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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 Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e689-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669619-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e640-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e716-108580 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e709-108580 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e637-108580 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e681-108580 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Reclassification Adjustments -URI http://asc.fasb.org/extlink&oid=6522872 + Details
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- References No definition available. + Details
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