Subsequent Events (Details) - Harris CapRock Communications - USD ($) $ in Millions	Nov. 01, 2016	Sep. 30, 2016
Assets
Receivables		$ 61
Inventories		12
Property, plant and equipment		68
Goodwill		135
Other intangible assets		23
Current and deferred taxes		38
Other assets		23
Liabilities
Accounts payable		15
Other liabilities		$ 51
Discontinued Operations, Held-for-sale | Subsequent Event
Subsequent Event [Line Items]
Proceeds from sell of business	$ 425