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Fair Value of Financial Investments (Details) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended 9 Months Ended
May 31, 2021
Sep. 30, 2021
Dec. 31, 2020
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Feb. 18, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]              
Proceeds from redemption of preferred stock $ 166            
Gain on preferred stock redemption $ 14 $ 0   $ 0 $ 14 $ 0  
Dividend income   0   $ 3 6 $ 7  
Kraus USA Inc              
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]              
Payments for asset acquisition, contingent     $ 50        
Estimate of Fair Value Measurement              
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]              
Estimated market value of long-term and short-term debt   3,200 3,300   3,200    
Carrying Value Reported Value Measurement              
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]              
Aggregate carrying value of long-term and short-term debt   3,000 2,800   3,000    
Carrying Value Reported Value Measurement | Kraus USA Inc | Fair Value, Inputs, Level 3              
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]              
Asset acquisition, contingent liability, fair value disclosure   22 8   22    
ACProducts Preferred Stock              
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]              
Investments, fair value disclosure             $ 136
ACProducts Preferred Stock | Other Assets              
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]              
Investments     $ 146        
ACProducts Holding, Inc              
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]              
Preferred stock, liquidation preference, value   $ 150     $ 150