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				12 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2019	Mar. 31, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Goodwill and Other Intangible Assets (Textual) [Abstract]
Goodwill, Impairment Loss	$ 58		$ 148		$ 0	$ 58	$ 148
Amortization expense related to finite-lived intangible assets					$ 127	134	$ 140
Accumulated impairment loss						206
AIA Reporting Unit
Goodwill and Other Intangible Assets (Textual) [Abstract]
Impairment of Intangible Assets, Finite-lived	$ 11		$ 7
Customer and Distributor Relationships
Goodwill and Other Intangible Assets (Textual) [Abstract]
Finite-Lived Intangible Asset, Useful Life					15 years
Internally Developed Network Software
Goodwill and Other Intangible Assets (Textual) [Abstract]
Finite-Lived Intangible Asset, Useful Life					4 years
Proprietary Technology
Goodwill and Other Intangible Assets (Textual) [Abstract]
Finite-Lived Intangible Asset, Useful Life					15 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
Measurement & Control Solutions
Goodwill and Other Intangible Assets (Textual) [Abstract]
Goodwill, Impairment Loss						$ 58
Measurement & Control Solutions \| Customer and Distributor Relationships
Goodwill and Other Intangible Assets (Textual) [Abstract]
Impairment of Intangible Assets, Finite-lived		$ 16		$ 3
Measurement & Control Solutions \| Internally Developed Network Software
Goodwill and Other Intangible Assets (Textual) [Abstract]
Impairment of Intangible Assets, Finite-lived		$ 10