The components of Prepaid expenses and other current assets were as follows at December 31:
| Millions of dollars | 2013 | 2012 | ||||||||
| VAT receivables | $ | 351 | $ | 202 | ||||||
| Income taxes | 103 | 85 | ||||||||
| Advances to suppliers | 180 | 67 | ||||||||
| Prepaid insurance | 49 | 51 | ||||||||
| Deferred tax assets | 24 | 46 | ||||||||
| Taxes other than income taxes | 17 | 18 | ||||||||
| Other | 106 | 101 | ||||||||
| Total prepaid expenses and other current assets | $ | 830 | $ | 570 | ||||||
The components of Other assets were as follows at December 31:
| Millions of dollars | 2013 | 2012 | ||||||||
| Debt issuance costs | $ | 103 | $ | 98 | ||||||
| Company-owned life insurance | 54 | 55 | ||||||||
| Pension assets | 73 | 15 | ||||||||
| Deferred tax assets | 357 | 44 | ||||||||
| Other | 32 | 34 | ||||||||
| Total other assets | $ | 619 | $ | 246 | ||||||