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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015
Net income | $ 183.6 | $ 111.2 | $ 280.3 | $ 241.9
Pension Plan and Restoration of Retirement Income Plan: |  |  |  |
Amortization of deferred net loss, net of tax of $0.4, $0.3, $1.2 and $1.7, respectively | 0.8 | 0.7 | 2.3 | 1.9
Settlement cost, net of tax of $0.0, $2.4, $3.2 and $2.4, respectively | 0.0 | 3.8 | 5.0 | 3.8
Postretirement Benefit Plans: |  |  |  |
Amortization of deferred net loss, net of tax of $0.0, $0.2, $0.0 and $0.6, respectively | 0.0 | 0.3 | 0.0 | 0.9
Amortization of prior service cost, net of tax of ($0.2), ($0.3), ($0.7) and ($0.8), respectively | (0.4) | (0.4) | (1.2) | (1.3)
Other comprehensive income, net of tax | 0.4 | 4.4 | 6.1 | 5.3
Comprehensive income | $ 184.0 | $ 115.6 | $ 286.4 | $ 247.2

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