Revenue

9 Months Ended

Sep. 30, 2020

Revenues [Abstract]

Revenue

REVENUE

    Our revenues are derived primarily from sales to customers in North America and Internationally, principally Europe. Net sales from these geographic markets, by segment, were as follows, in millions:

	Three Months Ended September 30, 2020
	Plumbing Products		Decorative Architectural Products		Total
Primary geographic markets:
North America	$	757	$	842	$	1,599
International, principally Europe	384		—		384
Total	$	1,141	$	842	$	1,983

	Nine Months Ended September 30, 2020
	Plumbing Products		Decorative Architectural Products		Total
Primary geographic markets:
North America	$	1,973	$	2,364	$	4,337
International, principally Europe	991		—		991
Total	$	2,964	$	2,364	$	5,328

	Three Months Ended September 30, 2019
	Plumbing Products		Decorative Architectural Products		Total
Primary geographic markets:
North America	$	664	$	710	$	1,374
International, principally Europe	342		—		342
Total	$	1,006	$	710	$	1,716

D. REVENUE (Concluded)

	Nine Months Ended September 30, 2019
	Plumbing Products		Decorative Architectural Products		Total
Primary geographic markets:
North America	$	1,923	$	2,110	$	4,033
International, principally Europe	1,035		—		1,035
Total	$	2,958	$	2,110	$	5,068

    Our contract asset balance was $2 million at both September 30, 2020 and December 31, 2019. Our contract liability balance was $25 million and $40 million at September 30, 2020 and December 31, 2019, respectively.

    We reversed $6 million and $2 million of revenue for the three-month periods ended September 30, 2020 and 2019, respectively, related to performance obligations settled in previous quarters of the same year. We recognized $1 million and $6 million of revenue for the three-month and nine-month periods ended September 30, 2020, respectively, and $1 million of revenue for the nine-month period ended September 30, 2019 related to performance obligations settled in previous years.

    Changes in the allowance for credit losses deducted from accounts receivable were as follows, in millions: 

	Nine Months Ended September 30, 2020
Balance at January 1 (after adopting ASU 2016-13)	$	5
Provision for expected credit losses during the period	2
Write-offs charged against the allowance	(1)
Recoveries of amounts previously written off	1
Balance at end of period	$	7