 
 
    | 2013: | Cost Basis | Unrealized Gains, Net | Recorded Basis | ||||||||
| Available-for-sale: | |||||||||||
| Government and agency securities(1) | $ | 1,263 | $ | 0 | $ | 1,263 | |||||
| Corporate notes and bonds | 9 | 0 | 9 | ||||||||
| Asset and mortgage-backed securities | 5 | 0 | 5 | ||||||||
| Total available-for-sale | 1,277 | 0 | 1,277 | ||||||||
| Held-to-maturity: | |||||||||||
| Certificates of deposit | 124 | 124 | |||||||||
| Bankers' acceptances | 79 | 79 | |||||||||
| Total held-to-maturity | 203 | 203 | |||||||||
| Total Short-Term Investments | $ | 1,480 | $ | 0 | $ | 1,480 | |||||
| (1) | Includes U.S. and Canadian government and agency securities. | 
| 2012: | Cost Basis | Unrealized Gains, Net | Recorded Basis | ||||||||
| Available-for-sale: | |||||||||||
| U.S. government and agency securities | $ | 776 | $ | 6 | $ | 782 | |||||
| Corporate notes and bonds | 54 | 0 | 54 | ||||||||
| FDIC-insured corporate bonds | 35 | 0 | 35 | ||||||||
| Asset and mortgage-backed securities | 8 | 0 | 8 | ||||||||
| Total available-for-sale | 873 | 6 | 879 | ||||||||
| Held-to-maturity: | |||||||||||
| Certificates of deposit | 447 | 447 | |||||||||
| Total Short-Term Investments | $ | 1,320 | $ | 6 | $ | 1,326 | |||||
| Available-For-Sale | Held-To-Maturity | ||||||||||
| Cost Basis | Fair Value | ||||||||||
| Due in one year or less | $ | 628 | $ | 628 | $ | 203 | |||||
| Due after one year through five years | 632 | 632 | 0 | ||||||||
| Due after five years | 17 | 17 | 0 | ||||||||
| $ | 1,277 | $ | 1,277 | $ | 203 | ||||||