Acquisitions and Divestitures (Textuals) (Details) $ in Millions				3 Months Ended		9 Months Ended
	Oct. 31, 2016 USD ($) location employee continent	Oct. 18, 2016 USD ($) employee	Feb. 01, 2016 USD ($) employee	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($) business	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($) business
Business Acquisition [Line Items]
Number of businesses divested | business					0		2
Proceeds from sale of businesses						$ 0	$ 1
Gain from sale of businesses				$ 0	$ 0	$ 0	$ 9
Tideland
Business Acquisition [Line Items]
Acquisition price			$ 70
Number of employees | employee			160
Subsequent Event
Business Acquisition [Line Items]
Acquisition price		$ 8
Number of employees | employee		25
Subsequent Event | Sensus
Business Acquisition [Line Items]
Acquisition price	$ 1,700
Number of employees | employee	3,300
Number of locations | location	28
Number of continents | continent	6