Discontinued Operations - Balance Sheet (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Operating lease right-of-use assets	$ 156	$ 176
Other assets	0	355
Noncurrent operating lease liabilities	$ 143	162
Masco Cabinetry | Discontinued Operations, Held-for-sale or Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Receivables		76
Prepaid expenses and other		7
Inventories		90
Property and equipment, net		157
Operating lease right-of-use assets		4
Goodwill		181
Other intangible assets, net		1
Other assets		12
Total assets classified as held for sale		528
Accounts payable		103
Accrued liabilities		46
Noncurrent operating lease liabilities		3
Other liabilities		10
Total liabilities classified as held for sale		$ 162