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Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]  
Product Warranty and Recall Reserves
Product warranty reserves are included in other current and other noncurrent liabilities in our Consolidated Balance Sheets. The following table summarizes the changes in total product warranty reserves for the periods presented:
Millions of dollars
 
2013
 
2012
Balance at January 1
 
$
187

 
$
197

Issuances/accruals during the period
 
292

 
303

Settlements made during the period
 
(288
)
 
(313
)
Balance at December 31
 
$
191

 
$
187

Current portion
 
$
154

 
$
148

Non-current portion
 
37

 
39

Total
 
$
191

 
$
187

Operating Lease Commitments
At December 31, 2013, we had noncancelable operating lease commitments totaling $851 million. The annual future minimum lease payments are summarized by year in the table below:
Millions of dollars                                                                                                      
 
 
2014
 
$
201

2015
 
163

2016
 
135

2017
 
119

2018
 
89

Thereafter
 
144

Total noncancelable operating lease commitments
 
$
851

Purchase Obligations
Our expected cash outflows resulting from purchase obligations are summarized by year in the table below:
Millions of dollars                                                                                                      
 
 
2014
 
$
225

2015
 
175

2016
 
165

2017
 
126

2018
 
117

Thereafter
 
219

Total purchase obligations
 
$
1,027