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Reclassifications From Accumulated Other Comprehensive Loss
3 Months Ended
Mar. 31, 2021
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]  
Reclassifications From Accumulated Other Comprehensive Loss RECLASSIFICATIONS FROM ACCUMULATED OTHER COMPREHENSIVE LOSS
 
The reclassifications from accumulated other comprehensive loss to the condensed consolidated statements of operations were as follows, in millions: 
 Amounts Reclassified 
Accumulated Other Comprehensive LossThree Months Ended March 31,Statement of Operations Line Item
20212020
Amortization of defined-benefit pension and other post-retirement benefits:
   
Actuarial losses, net$$
Other income (expense), net
Tax (benefit)(2)(2) 
Net of tax$$ 
Interest rate swaps (A)
$$— Interest expense
Tax expense—  
Net of tax$$—  
(A)    Upon full repayment and retirement of the 5.950% Notes due March 15, 2022 in the first quarter of 2021, we recognized the remaining interest rate swap loss and related disproportionate tax expense.