Revenue (Tables)

12 Months Ended

Dec. 31, 2021

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following table illustrates the sources of revenue:

	Year Ended December 31,
(in millions)	2021		2020		2019
Revenue from contracts with customers	$	4,998	$	4,681	$	5,002
Lease Revenue	197		195		247
Total	$	5,195	$	4,876	$	5,249

The following table reflects revenue from contracts with customers by application. The table below also reflects updates to the aggregation of applications to simplify and focus presentation.

	Year Ended December 31,
(in millions)	2021		2020		2019
Water Infrastructure
Transport	$	1,619	$	1,484	$	1,533
Treatment	431		400		397
Applied Water*
Commercial Building Services	609		558		600
Residential Building Services	268		238		247
Industrial Water	736		638		694
Measurement and Control Solutions
Water	1,055		1,039		1,134
Energy	280		324		397
Total	$	4,998	$	4,681	$	5,002

*Items in the prior year footnote disclosures for Applied Water and Measurement and Control Solutions were reclassified to conform to the current classification.

The following table reflects revenue from contracts with customers by geographical region. The presentation of geographic regions below has been updated to better align to how management currently focuses on revenue and growth platforms by geographic region. For consistency, the prior year balances have been adjusted to conform with the current year presentation. There has been no change to the Company's reportable segments.

	Year Ended December 31,
(in millions)	2021		2020		2019
Water Infrastructure
United States	$	556	$	558	$	593
Western Europe	753		675		658
Emerging Markets (a)	537		468		491
Other	204		183		187
Applied Water
United States	804		754		816
Western Europe	370		316		323
Emerging Markets (a)	324		260		300
Other	115		104		103
Measurement and Control Solutions
United States	796		856		972
Western Europe	256		234		222
Emerging Markets (a)	189		177		235
Other	94		96		102
Total	$	4,998	$	4,681	$	5,002

Contract with Customer, Asset and Liability

The table below provides contract assets, contract liabilities, and significant changes in contract assets and liabilities:

(in millions)	Contract Assets (a)		Contract Liabilities
Balance at 1/1/2020	$	106	$	135
Additions, net	118		120
Revenue recognized from opening balance	—		(93)
Billings transferred to accounts receivable	(110)		—
Other	3		4
Balance at 1/1/2021	$	117	$	166
Additions, net	112		117
Revenue recognized from opening balance	—		(117)
Billings transferred to accounts receivable	(103)		—
Other	(1)		(2)
Balance at 12/31/2021	$	125	$	164

(a)Excludes receivable balances which are disclosed on the balance sheet