| ($ in millions) | ||||||||||||||||
| Gross | Gross | |||||||||||||||
| Adjusted | Unrealized | Unrealized | Fair | |||||||||||||
| At December 31, 2013: | Cost | Gains | Losses | Value | ||||||||||||
| Debt securities – noncurrent(1) | $ | 7 | $ | 1 | $ | — | $ | 9 | ||||||||
| Available-for-sale equity investments(1) | $ | 20 | $ | 2 | $ | 4 | $ | 18 | ||||||||
| (1) | Included within investments and sundry assets in the Consolidated Statement of Financial Position. | |||||||||||||||
| ($ in millions) | ||||||||||||||||
| Gross | Gross | |||||||||||||||
| Adjusted | Unrealized | Unrealized | Fair | |||||||||||||
| At December 31, 2012: | Cost | Gains | Losses | Value | ||||||||||||
| Debt securities – noncurrent(1) | $ | 8 | $ | 2 | $ | — | $ | 10 | ||||||||
| Available-for-sale equity investments(1) | $ | 31 | $ | 4 | $ | 1 | $ | 34 | ||||||||
| (1) | Included within investments and sundry assets in the Consolidated Statement of Financial Position. | |||||||||||||||