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Commitments and Contingent Liabilities - Schedule of Current and Long-term Components of Accrued Environmental Remediation Liabilities and Balance Sheet Locations (Details) - USD ($)
Dec. 31, 2019
Dec. 31, 2018
Environmental Remediation [Line Items]    
Current accrued liabilities $ 74,000,000 $ 139,000,000
Long-term accrued liabilities 332,000,000 152,000,000
Total environmental remediation 406,000,000 291,000,000
Other Accrued Liabilities [Member]    
Environmental Remediation [Line Items]    
Current accrued liabilities 74,000,000 139,000,000
Other Liabilities [Member]    
Environmental Remediation [Line Items]    
Long-term accrued liabilities 332,000,000 152,000,000
Fayetteville Works, Fayetteville, North Carolina [Member]    
Environmental Remediation [Line Items]    
Current accrued liabilities 20,000,000 75,000,000
Long-term accrued liabilities 181,000,000 0
Total environmental remediation 201,000,000 75,000,000
Fayetteville Works, Fayetteville, North Carolina [Member] | Other Accrued Liabilities [Member]    
Environmental Remediation [Line Items]    
Current accrued liabilities 20,000,000 $ 75,000,000
Fayetteville Works, Fayetteville, North Carolina [Member] | Other Liabilities [Member]    
Environmental Remediation [Line Items]    
Long-term accrued liabilities $ 181,000,000