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FAIR VALUE OF FINANCIAL INVESTMENTS - General Disclosures (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Feb. 18, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Dividend income	$ 10	$ 0	$ 0
Investments	146	$ 0
Kraus USA Inc.
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration, undiscounted amount, maximum	50
Contingent consideration, liability	$ 8
ACProducts Preferred Stock
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Coupon rate, percentage until the first anniversary issuance	8.00%
Coupon rate, percentage after the first anniversary and until the second anniversary issuance	9.00%
Coupon rate, percentage after the second anniversary and until the seventh anniversary issuance	10.00%
Preferred Stock, percentage of coupon rate increase	0.50%
Coupon rate, maximum percentage	15.00%
Fair value disclosure, investment				$ 136
ACProducts Preferred Stock | Other Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	$ 146
ACProducts Holding Inc
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liquidation preference	$ 150

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