Other Income (Expense), Net (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Investment [Line Items]
Gain on sale of business	$ 49	$ 0	$ 49	$ 0
Income from cash and cash investments and short-term bank deposits	1	1	2	2
Equity investment income, net	1	0	1	1
Foreign currency transaction (losses) gains	(1)	2	0	2
Other items, net	0	0	0	(3)
Total other, net	51	5	54	4
Auction Rate Securities
Investment [Line Items]
Realized gains from investments	0	1	0	1
Private equity funds
Investment [Line Items]
Realized gains from investments	$ 1	$ 1	$ 2	$ 1

Line items represent reporting concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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