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Commitments and Contingencies (Tables)
6 Months Ended
Jun. 30, 2019
Commitments and Contingencies Disclosure [Abstract]  
Product Warranty Reserves The following table summarizes the changes in total product warranty liability reserves for the periods presented:


Product Warranty
Millions of dollars

2019

2018
Balance at January 1

$
268


$
277

Issuances/accruals during the period

128


145

Settlements made during the period/other

(143
)

(147
)
Balance at June 30

$
253


$
275

 
 
 
 
 
Current portion

$
178


$
200

Non-current portion

75


75

Total

$
253


$
275