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Acquisitions (Details) - USD ($)
$ in Millions
9 Months Ended
Oct. 01, 2021
Sep. 10, 2021
Aug. 19, 2021
Sep. 30, 2021
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]        
Goodwill acquired during the period       $ 172
Boral Target Companies | Subsequent Event        
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]        
Payments to acquire business $ 2,150      
Business Combination, Contingent Consideration, Liability, Noncurrent $ 65      
Lasco Fittings, Inc.        
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]        
Total purchase consideration     $ 277  
Intangible assets     77  
Goodwill acquired during the period     106  
Lasco Fittings, Inc. | Customer Relationships        
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]        
Intangible assets     $ 50  
Lasco Fittings, Inc. | Minimum        
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]        
Finite-lived intangible asset useful life     17 years  
Lasco Fittings, Inc. | Maximum        
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]        
Finite-lived intangible asset useful life     18 years  
Dimex, LLC        
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]        
Total purchase consideration   $ 172    
Intangible assets   69    
Goodwill acquired during the period   66    
Dimex, LLC | Customer Relationships        
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]        
Intangible assets   $ 45    
Dimex, LLC | Minimum        
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]        
Finite-lived intangible asset useful life   17 years    
Dimex, LLC | Maximum        
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]        
Finite-lived intangible asset useful life   19 years