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Significant Transactions (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Apr. 01, 2021
Jun. 30, 2021
Jun. 30, 2020
Mar. 31, 2020
Jun. 30, 2021
Jun. 30, 2020
Altium Packaging LLC [Member] | Sale of Interest [Member]            
Significant Transactions [Abstract]            
Percentage interest of subsidiary sold 47.00%          
Cash consideration from sale of interest in subsidiary   $ 420     $ 420  
Pretax gain from sale of interest in subsidiary   555     555  
After tax gain from sale of interest in subsidiary   438     438  
Investment at fair value   $ 473     $ 473  
Subsidiary ownership percentage   53.00%     53.00%  
Property, plant and equipment   $ 490     $ 490  
Goodwill   436     436  
Intangible assets   488     488  
Other assets   370     370  
Long term debt   1,100     1,100  
Other liabilities   $ 380     $ 380  
Diamond Offshore [Member]            
Significant Transactions [Abstract]            
Deconsolidation loss     $ 1,200     $ 1,200
Deconsolidation loss, after tax     $ 957     $ 957
Pretax asset impairment charge       $ 774    
Asset impairment charge, after tax and noncontrolling interests       $ 408