Discontinued Operations - Income Statement (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
(Loss) income from discontinued operations, net	$ 0	$ (37)		$ 411	$ 1
Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales	0	403		101	1,234
Cost of sales	0	314		78	959
Gross profit	0	89		23	275
Selling, general and administrative expenses	0	56		31	176
Impairment charge for goodwill	0	0		0	7
Other income (expense), net	0	1		0	1
Income (loss) from discontinued operations	0	34		(8)	93
(Loss) gain on disposal of discontinued operations	0	(70)		602	(70)
(Loss) income before income tax	0	(36)		594	23
Income tax benefit (expense)	0	(1)		(183)	(22)
(Loss) income from discontinued operations, net	$ 0	$ (37)		$ 411	$ 1
UK Window Group | Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Noncash goodwill impairment			$ 7