Quarterly report pursuant to Section 13 or 15(d)

Borrowings Borrowings, Narrative (Details)

v3.10.0.1
Borrowings Borrowings, Narrative (Details) - USD ($)
9 Months Ended
Sep. 29, 2018
Sep. 30, 2017
Debt Instrument [Line Items]    
Loss on satisfaction of convertible debt obligations $ (211,000,000) $ 0
Junior subordinated debt | 3.25% junior subordinated 2039 convertible debenture    
Debt Instrument [Line Items]    
Repayments of subordinated debt 1,900,000,000  
Repurchased face amount 793,000,000  
Debt instrument, face amount $ 2,000,000,000  
Interest rate 3.25%  
Loss on satisfaction of convertible debt obligations $ 211,000,000  
Reduction in stockholders' equity related to conversion feature 1,300,000,000  
Unsecured general obligations | Arizona bonds    
Debt Instrument [Line Items]    
Debt instrument, face amount $ 423,000,000  
Unsecured general obligations | Arizona bonds | Minimum    
Debt Instrument [Line Items]    
Interest rate 2.40%  
Unsecured general obligations | Arizona bonds | Maximum    
Debt Instrument [Line Items]    
Interest rate 2.70%