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Investments (Tables) | 12 Months Ended
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Dec. 31, 2015
Investment Summary |
December 31 (in millions) |  | 2015 |  | 2014
Fair Value Method | $ | 167 | $ | 662
Equity Method: |  |  |  |
| The Weather Channel |  | - |  | 335
| Hulu |  | 184 |  | 167
| Other |  | 494 |  | 517
|  |  | 678 |  | 1,019
Cost Method: |  |  |  |
| AirTouch |  | 1,583 |  | 1,568
| Other |  | 902 |  | 488
|  |  | 2,485 |  | 2,056
Total investments |  | 3,330 |  | 3,737
Less: Current investments |  | 106 |  | 602
Noncurrent investments | $ | 3,224 | $ | 3,135
Investment Income (Loss), Net |
Investment Income (Loss), Net |  |  |  |  |  |
Year ended December 31 (in millions) |  | 2015 |  | 2014 |  | 2013
Gains on sales and exchanges of investments, net | $ | 12 | $ | 192 | $ | 484
Investment impairment losses |  | (59) |  | (50) |  | (29)
Unrealized gains on securities underlying prepaid forward sale agreements |  | 42 |  | 66 |  | 1,601
Mark to market adjustments on derivative component of prepaid forward sale |  |  |  |  |  |
| agreements and indexed debt instruments |  | (42) |  | (56) |  | (1,604)
Interest and dividend income |  | 115 |  | 116 |  | 111
Other, net |  | 13 |  | 28 |  | 13
Investment income (loss), net | $ | 81 | $ | 296 | $ | 576
Prepaid Forward Sale Agreements |
Prepaid Forward Sale Agreements
December 31 (in millions) |  | 2014
Assets: |  |
| Fair value equity securities held as collateral | $ | 523
Liabilities: |  |
| Obligations under prepaid forward sale agreements | $ | 119
| Derivative component of prepaid forward sale agreements |  | 356
Total liabilities | $ | 475
NBCUniversal Media LLC [Member] |
Investment Summary |
December 31 (in millions) |  | 2015 |  | 2014
Fair Value Method | $ | 10 | $ | 10
Equity Method: |  |  |  |
| The Weather Channel |  | - |  | 335
| Hulu |  | 184 |  | 167
| Other |  | 313 |  | 338
|  |  | 497 |  | 840
Cost Method |  | 458 |  | 32
Total investments | $ | 965 | $ | 882
Summarized Financial Information |
December 31 (in millions) |  |  |  | 2015 |  | 2014
Current assets |  |  | $ | 1,904 | $ | 1,529
Noncurrent assets |  |  | $ | 3,584 | $ | 4,572
Current liabilities |  |  | $ | 1,225 | $ | 1,235
Noncurrent liabilities |  |  | $ | 4,879 | $ | 4,162
Year ended December 31 (in millions) |  | 2015 |  | 2014 |  | 2013
Revenue | $ | 3,944 | $ | 3,756 | $ | 3,360
Operating income (loss) | $ | (1,609) | $ | 483 | $ | 645
Net income (loss) | $ | (1,820) | $ | 243 | $ | 188

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