XML 77 R66.htm IDEA: XBRL DOCUMENT v3.10.0.1
Stockholders' Equity - Summary of Changes in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Jan. 01, 2018
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Balance at December 31, 2017     $ 20,501    
Reclassifications to retained earnings as a result of the adoption of new accounting standards         $ 190
Net current period other comprehensive income (loss) $ 34 $ 129 164 $ (29)  
Balance at September 30, 2018 23,007   23,007    
Foreign Currency Translation          
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Balance at December 31, 2017     85    
Reclassifications to retained earnings as a result of the adoption of new accounting standards         0
Balance at January 1, 2018         85
Net unrealized gain (loss)     (17)    
Reclassifications to net income     0    
Net current period other comprehensive income (loss)     (17)    
Balance at September 30, 2018 68   68    
Unrealized Gains and Losses on Available-for-Sale Securities          
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Balance at December 31, 2017     194    
Reclassifications to retained earnings as a result of the adoption of new accounting standards         (293)
Balance at January 1, 2018         (99)
Net unrealized gain (loss)     25    
Reclassifications to net income     4    
Net current period other comprehensive income (loss)     29    
Balance at September 30, 2018 (70)   (70)    
Unrealized Gains and Losses on Cash Flow Hedges          
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Balance at December 31, 2017     (114)    
Reclassifications to retained earnings as a result of the adoption of new accounting standards         0
Balance at January 1, 2018         (114)
Net unrealized gain (loss)     51    
Reclassifications to net income     101    
Net current period other comprehensive income (loss)     152    
Balance at September 30, 2018 38   38    
Accumulated Other Comprehensive Income (Loss)          
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Balance at December 31, 2017     165    
Reclassifications to retained earnings as a result of the adoption of new accounting standards         (293)
Balance at January 1, 2018         $ (128)
Net unrealized gain (loss)     59    
Reclassifications to net income     105    
Net current period other comprehensive income (loss)     164    
Balance at September 30, 2018 $ 36   $ 36