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Accumulated Other Comprehensive Loss (AOCL) (Tables)
9 Months Ended
Sep. 30, 2020
Equity [Abstract]  
Schedule of Accumulated Other Comprehensive Loss
Below are the balances and changes in AOCL(1):

(in millions)Currency Translation AdjustmentsGains (Losses) on Cash Flow HedgesDefined Benefit Pension ItemsTotal
Balance at December 31, 2019$(408)$$(2)$(407)
Other comprehensive income (loss) before reclassifications(15)— (14)
Amounts reclassified from accumulated other comprehensive loss— — — — 
Net current period other comprehensive income (loss)(15)— (14)
Balance at September 30, 2020$(423)$$(1)$(421)
(in millions)Currency Translation AdjustmentsGains (Losses) on Cash Flow HedgesDefined Benefit Pension ItemsTotal
Balance at December 31, 2018$(426)$$(1)$(425)
Other comprehensive income (loss) before reclassifications(9)— (8)
Amounts reclassified from accumulated other comprehensive loss15 — (1)14 
Net current period other comprehensive income (loss)(1)
Balance at September 30, 2019$(420)$$(2)$(419)
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(1)All amounts are net of tax. Tax effects were immaterial.