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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Statement of Comprehensive Income [Abstract] |  |  |
Net income | $ 112.3 | $ 80.7 | $ 75.5
Other comprehensive income (loss), net of tax: |  |  |
Foreign currency translation adjustments | (0.9) | 7.0 | (11.8)
Net actuarial gain (loss) arising during period, net of tax of $20.3, $(6.2) and $(17.9) | 33.7 | (13.2) | (30.1)
Curtailment arising during period, net of tax of $(0.2) | 0 | 0 | (0.4)
Settlement effects arising during period, net of tax of $0.3 | 0 | 0 | 0.5
Less: amortization of actuarial loss, net of tax of $3.6, $2.8 and $2.2 | 4.9 | 5.7 | 3.8
Less: amortization of prior service credit, net of tax of $(0.5), $(0.5) and $(0.5) | (0.8) | (0.8) | (0.9)
Less: amortization of transition obligation | 0.1 | 0.1 | 0.1
Net gains on investment securities, net of tax of $2.1, $0.2 and $0.2 | 3.5 | 0.4 | 0.3
Net gains (losses) on derivatives, net of tax of $1.8, (2.1) and $(1.1) | 3.0 | (3.6) | (1.7)
Other comprehensive income (loss), net of tax | 43.5 | (4.4) | (40.2)
Comprehensive income | $ 155.8 | $ 76.3 | $ 35.3

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- Definition Amount after tax of (increase) decrease in the value of the projected benefit obligation related to a change in an actuarial assumption and increase (decrease) in the value of the plan assets resulting from experience different from that assumed, that has not been recognized in net periodic benefit (cost) credit. + References Reference 1: 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=28358780&loc=d3e637-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=28358780&loc=SL7669646-108580 + Details
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- Definition Amount after tax of reclassification adjustment from accumulated other comprehensive (income) loss for prior service cost (credit) related to pension and other postretirement benefit plans. + References Reference 1: 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=28358780&loc=d3e637-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=28358780&loc=SL7669646-108580 + Details
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