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Commitments and Contingencies (Tables)
 9 Months Ended
Sep. 30, 2013
Commitments and Contingencies Disclosure [Abstract]  
Product Warranty and Recall Reserves
The following table summarizes the changes in total product warranty and recall reserves for the periods presented:
Millions of dollars

2013

2012
Balance at January 1

$
187


$
191

Issuances/accruals during the period

241


233

Settlements made during the period

(236
)

(241
)
Other changes

—


—

Balance at September 30

$
192


$
183

Current portion

$
147


$
150

Non-current portion

45


33

Total

$
192


$
183