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Commitments and Contingencies - Additional Information (Detail)
 3 Months Ended 12 Months Ended
Dec. 31, 2017
USD ($)
Sep. 30, 2017
USD ($)
Sep. 30, 2017
USD ($)
Loss Contingencies [Line Items]      
Estimated asbestos related net liability on a discounted basis $ 166,000,000 $ 181,000,000 $ 181,000,000
Reserves for environmental liabilities 48,000,000 51,000,000 51,000,000
Conditional asset retirement obligations 62,000,000 61,000,000 61,000,000
Accrued Environmental Loss Contingencies, Current 10,000,000    
Accrued Environmental Loss Contingencies, Noncurrent 38,000,000    
Liability for Asbestos and Environmental Claims, Gross 559,000,000 573,000,000 573,000,000
Restricted Cash and Investments 393,000,000 392,000,000 392,000,000
Restricted Cash and Cash Equivalents 19,000,000 31,000,000 31,000,000
Insurance Recoveries 100,000,000   101,000,000
Insurable liabilities 434,000,000 445,000,000 445,000,000
Insurance Settlements Receivable, Current 6,000,000 31,000,000 31,000,000
Insurance Settlements Receivable 21,000,000 46,000,000 46,000,000
Insurance Settlements Receivable, Noncurrent $ 15,000,000 15,000,000 15,000,000
Arbitration award to plaintiff   $ 50,000,000  
Accrued interest while arbitration award remains outstanding   9.56%  
Class actions lawsuits against the Company 12    
Loss Contingency, Number of Plaintiffs 32    
Other possible individual product liability claims 540    
Asbestos Issue [Member]      
Loss Contingencies [Line Items]      
Restricted Cash and Cash Equivalents $ 10,000,000 $ 22,000,000 22,000,000
Restricted Investments 283,000,000 269,000,000 269,000,000
Selling, General And Administrative      
Loss Contingencies [Line Items]      
Arbitration award to plaintiff   50,000,000  
Accrued Compensation and Benefits [Member]      
Loss Contingencies [Line Items]      
Insurable liabilities 23,000,000 22,000,000 22,000,000
Other Current Assets      
Loss Contingencies [Line Items]      
Restricted Cash and Investments 55,000,000 53,000,000 53,000,000
Other Noncurrent Assets      
Loss Contingencies [Line Items]      
Restricted Cash and Investments 338,000,000 339,000,000 339,000,000
Other Noncurrent Liabilities [Member]      
Loss Contingencies [Line Items]      
Liability for Asbestos and Environmental Claims, Gross 505,000,000 525,000,000 525,000,000
Insurable liabilities 319,000,000 301,000,000 301,000,000
Other Current Liabilities      
Loss Contingencies [Line Items]      
Liability for Asbestos and Environmental Claims, Gross 54,000,000 48,000,000 48,000,000
Insurable liabilities $ 92,000,000 $ 122,000,000 $ 122,000,000