XML 77 R58.htm IDEA: XBRL DOCUMENT v3.20.2
Restructuring and Transaction Costs (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2019
Restructuring Cost And Reserve [Line Items]    
Restructuring and transaction costs $ 12 $ 63
Reduction of workforce [Member]    
Restructuring Cost And Reserve [Line Items]    
Restructuring and transaction costs   63
Expense associated with accelerated awards   24
Reduction of workforce [Member] | Defined Benefit Settlements [Member]    
Restructuring Cost And Reserve [Line Items]    
Restructuring and transaction costs   $ 5