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Other Income (Expense), Net (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Investment [Line Items] |  |  |  |
Gain on sale of business | $ 2 | $ 0 | $ 51 | $ 0
Income from cash and cash investments and short-term bank deposits | 1 | 1 | 3 | 3
Equity investment income, net | 0 | 0 | 1 | 1
Foreign currency transaction gains (losses) | 3 | (3) | 3 | (1)
Other items, net | 0 | 2 | 0 | (1)
Total other, net | 4 | 1 | 58 | 5
Auction Rate Securities |  |  |  |
Investment [Line Items] |  |  |  |
Realized gains from investments | 0 | 0 | 0 | 1
Private equity funds |  |  |  |
Investment [Line Items] |  |  |  |
Realized gains from investments | 0 | 1 | 2 | 2
Impairment of private equity funds | $ (2) | $ 0 | $ (2) | $ 0

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