XML 54 R42.htm IDEA: XBRL DOCUMENT v3.7.0.1
Financing (Narrative) (Details) - USD ($)
$ / shares in Units, shares in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2017
Dec. 31, 2016
Oct. 31, 2016
Debt Instrument [Line Items]        
Long-term debt $ 11,950,300,000 $ 11,950,300,000 $ 12,269,000,000  
Debt discounts and debt issuance costs $ 23,000,000 $ 23,000,000 $ 25,000,000  
Common stock, par value $ 0.01 $ 0.01 $ 0.01  
Convertible debt | Zero-coupon LYONs due 2021        
Debt Instrument [Line Items]        
Long-term debt $ 68,500,000 $ 68,500,000 $ 68,100,000  
Shares issued under debt conversion, shares   2    
Commercial paper        
Debt Instrument [Line Items]        
Weighted average interest rate of long-term debt, interest rate 0.20% 0.20%    
Long-term debt weighted average maturity 26 days      
Long-term debt $ 4,000,000,000 $ 4,000,000,000    
Revolving credit facility        
Debt Instrument [Line Items]        
Line of credit facility, amount outstanding 0 0    
Long-term debt | Revolving credit facility | Credit Facility        
Debt Instrument [Line Items]        
Line of credit $ 4,000,000,000 $ 4,000,000,000    
Short-term debt | Revolving credit facility | 364-Day Facility        
Debt Instrument [Line Items]        
Line of credit       $ 3,000,000,000