Acquisitions and Divestitures (Summary of Assets Acquired and Liabilities Assumed) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Nov. 01, 2016	Dec. 31, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Goodwill	$ 2,632		$ 1,584	$ 1,635
Sensus
Business Acquisition [Line Items]
Cash		$ 56
Receivables		105
Inventories		79
Prepaid and other current assets		20
Property, plant and equipment		181
Intangible assets		787
Other long-term assets		4
Accounts payable		(69)
Accrued and other current liabilities		(91)
Deferred income tax liabilities		(209)
Accrued post retirement benefits		(84)
Other non-current accrued liabilities		(58)
Total identifiable net assets		721
Goodwill		1,062
Non-controlling interest		(17)
Total consideration paid		$ 1,766