The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Goodwill and Other Intangible Assets (Details Textual) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Sep. 30, 2019	Mar. 31, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Goodwill and Other Intangible Assets (Textual) [Abstract]
Goodwill, Impairment Loss	$ 148		$ 148	$ 0	$ 0
Impairment of the indefinite-lived intangibles			0	0
Amortization expense related to finite-lived intangible assets			$ 140	$ 144	$ 125
Impairment of Intangible Assets, Finite-lived	$ 7	$ 3
Customer and Distributor Relationships
Goodwill and Other Intangible Assets (Textual) [Abstract]
Finite-Lived Intangible Asset, Useful Life			14 years
Internally Developed Network Software
Goodwill and Other Intangible Assets (Textual) [Abstract]
Finite-Lived Intangible Asset, Useful Life			5 years
Proprietary Technology
Goodwill and Other Intangible Assets (Textual) [Abstract]
Finite-Lived Intangible Asset, Useful Life			14 years
Trademarks
Goodwill and Other Intangible Assets (Textual) [Abstract]
Finite-Lived Intangible Asset, Useful Life			13 years
Other
Goodwill and Other Intangible Assets (Textual) [Abstract]
Finite-Lived Intangible Asset, Useful Life			5 years
Water Infrastructure
Goodwill and Other Intangible Assets (Textual) [Abstract]
Goodwill, Impairment Loss			$ 0