XML 63 R41.htm IDEA: XBRL DOCUMENT v3.8.0.1
Organization and Summary of Significant Accounting Policies - Summary of Components of Accumulated Other Comprehensive Income (Details) - USD ($)
$ in Millions
Dec. 31, 2017
Jan. 01, 2017
Accumulated Other Comprehensive Income [Line Items]    
Total accumulated other comprehensive loss $ 2,749 $ 2,197
Foreign currency translation adjustments [Member]    
Accumulated Other Comprehensive Income [Line Items]    
Total accumulated other comprehensive loss 1 1
Unrealized loss on available-for-sale securities, net of deferred tax    
Accumulated Other Comprehensive Income [Line Items]    
Total accumulated other comprehensive loss (2) (2)
AOCI attributable to parent [Member]    
Accumulated Other Comprehensive Income [Line Items]    
Total accumulated other comprehensive loss $ (1) $ (1)