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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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