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Goodwill and Intangible Assets - Narrative (Details)
12 Months Ended
Jul. 01, 2019
USD ($)
Dec. 31, 2019
USD ($)
segment
reporting_unit
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]        
Number of reportable segments | segment   4    
Number of reporting units | reporting_unit   4    
Goodwill impairment $ 0      
Finite-Lived Intangible Assets [Line Items]        
Amortization expense for intangible assets   $ 365,000,000 $ 455,000,000 $ 387,000,000
Minimum        
Finite-Lived Intangible Assets [Line Items]        
Estimated weighted average life (years)   1 year    
Maximum        
Finite-Lived Intangible Assets [Line Items]        
Estimated weighted average life (years)   30 years    
Discount rate | Income approach valuation technique | Minimum        
Finite-Lived Intangible Assets [Line Items]        
Discount rates   0.100    
Discount rate | Income approach valuation technique | Maximum        
Finite-Lived Intangible Assets [Line Items]        
Discount rates   0.115    
Oilfield Services (OFS) and Oilfield Equipment (OFE) | Minimum        
Finite-Lived Intangible Assets [Line Items]        
Reporting unit, percentage of fair value in excess of carrying value 8.00%      
Oilfield Services (OFS) and Oilfield Equipment (OFE) | Maximum        
Finite-Lived Intangible Assets [Line Items]        
Reporting unit, percentage of fair value in excess of carrying value 10.00%