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Spin-Off Charges (Tables)
9 Months Ended
Sep. 30, 2019
Spin-Off Charges [Abstract]  
Reconciliation Of Accrued Spin-off Charges

(In millions)

Accrued
Spin-off
Charges

Balance as of December 31, 2018

$

Costs incurred

1

Costs paid or otherwise settled

(1)

Balance as of September 30, 2019

$

Balance as of December 31, 2017

$

1

Costs incurred(1)

21

Costs paid or otherwise settled

(22)

Balance as of September 30, 2018

$

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(1)An additional $2 million of Spin-off charges were pre-paid in 2017 and subsequently expensed during the nine months ended September 30, 2018.