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Changes in Accumulated Other Comprehensive Income by Component
 9 Months Ended
Sep. 30, 2019
Equity [Abstract]  
Changes in Accumulated Other Comprehensive Income by Component CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME BY COMPONENT
A summary of changes in accumulated other comprehensive income (AOCI), net of tax, by component, for the nine months ended September 30, 2019 follows:
Cash Flow HedgesDefined Benefit Pension ItemsTotal
Balance as of December 31, 2018$16.1  $14.7  $30.8  
Other comprehensive loss before reclassifications(43.0) (0.8) (43.8) 
Amounts reclassified from accumulated other comprehensive income(0.9) —  (0.9) 
Net current period other comprehensive loss(43.9) (0.8) (44.7) 
Adoption of accounting standard5.4  —  5.4  
Balance as of September 30, 2019$(22.4) $13.9  $(8.5) 
A summary of reclassifications out of accumulated other comprehensive income for the three and nine months ended September 30, 2019 and 2018 follows:
Three Months Ended September 30,Nine Months Ended September 30,
2019201820192018
Details about Accumulated Other Comprehensive Income ComponentsAmount Reclassified from Accumulated Other Comprehensive IncomeAmount Reclassified from Accumulated Other Comprehensive IncomeAffected Line Item in the Statement where Net Income is Presented
Gain (loss) on cash flow hedges:
Recyclable commodity hedges$—  $0.4  $—  $0.7  Revenue
Fuel hedges—  1.2  —  3.1  Cost of operations
Terminated interest rate locks0.7  —  1.2  (0.8) Interest expense
Total before tax0.7  1.6  1.2  3.0  
Tax expense(0.2) (0.4) (0.3) (0.8) 
Total gain reclassified into earnings, net of tax$0.5  $1.2  $0.9  $2.2