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Valuation And Qualifying Accounts And Reserves
 12 Months Ended
Dec. 31, 2019
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]  
Valuation And Qualifying Accounts And Reserves
SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS AND RESERVES
 
 
 
 
 
 
 
 
 
 
 
Beginning of
 
 
 
 
 
 
 
End of
(In millions)
Year Balance
 
Additions
 
Deductions (1)
 
Other (2)
 
Year Balance
Allowance for doubtful accounts
 
 
 
 
 
 
 
 
 
December 31, 2017
$
72

 
3

 
(6
)
 
4

 
$
73

December 31, 2018
$
73

 
44

 
(26
)
 
(7
)
 
$
84

December 31, 2019
$
84

 
26

 
(19
)
 
19

 
$
110

 
 
 
 
 
 
 
 
 
 
(1) Uncollectible accounts written off
(2) Impact of reclassifications, foreign exchange translation, and other adjustments