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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Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Goodwill and Other Intangible Assets (Details Textual) - USD ($) $ in Millions	3 Months Ended				9 Months Ended	12 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2019	Mar. 31, 2019	Sep. 30, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Goodwill and Other Intangible Assets (Textual) [Abstract]
Goodwill, Impairment Loss	$ 58		$ 148			$ 58	$ 148	$ 0
Amortization expense related to finite-lived intangible assets						134	140	$ 144
Accumulated impairment loss						$ 206	148
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						4 years
Water Infrastructure
Goodwill and Other Intangible Assets (Textual) [Abstract]
Goodwill, Impairment Loss						$ 0	0
Measurement & Control Solutions
Goodwill and Other Intangible Assets (Textual) [Abstract]
Goodwill, Impairment Loss	58					$ 58	$ 148
Impairment of Intangible Assets, Finite-lived	$ 11	$ 16			$ 7
Measurement & Control Solutions \| Customer and Distributor Relationships
Goodwill and Other Intangible Assets (Textual) [Abstract]
Impairment of Intangible Assets, Finite-lived				$ 3
Measurement & Control Solutions \| Internally Developed Network Software
Goodwill and Other Intangible Assets (Textual) [Abstract]
Impairment of Intangible Assets, Finite-lived		$ 10