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Segment Information (Details)
$ in Millions
3 Months Ended 6 Months Ended
Jul. 26, 2015
USD ($)
Jul. 27, 2014
USD ($)
Jul. 26, 2015
USD ($)
Jul. 27, 2014
USD ($)
Jan. 25, 2015
Revenue by Operating Segment and Geographic Region          
Revenue $ 1,153 $ 1,103 $ 2,304 $ 2,206  
Depreciation and amortization expenses 49 56 103 111  
Operating income (loss) $ 76 $ 163 $ 250 $ 314  
Revenue from significant customers (in percent) 23.00% 21.00% 21.00% 10.00%  
Number of customers with significant revenue 2 2 2 1  
Accounts receivable from significant customers (in percent) 22.00%   22.00%   30.00%
No. of customers with significant accounts receivable balance 1   1   2
Reconciling items included in All Other category          
Unallocated cost of revenue and operating expenses $ (67) $ (42) $ (124) $ (85)  
Stock-based compensation expense (47) (38) (93) (74)  
Acquisition-related costs (4) (9) (13) (19)  
Product warranty charge related to recall (15) 0 (15) 0  
Restructuring and other charges (89) 0 (89) 0  
Taiwan          
Revenue by Operating Segment and Geographic Region          
Revenue 445 331 832 704  
China          
Revenue by Operating Segment and Geographic Region          
Revenue 181 252 354 475  
United States          
Revenue by Operating Segment and Geographic Region          
Revenue 138 206 318 379  
Other Asia Pacific          
Revenue by Operating Segment and Geographic Region          
Revenue 185 151 373 306  
Other Americas          
Revenue by Operating Segment and Geographic Region          
Revenue 98 83 202 175  
Europe          
Revenue by Operating Segment and Geographic Region          
Revenue 106 80 225 167  
GPU          
Revenue by Operating Segment and Geographic Region          
Revenue 959 878 1,899 1,776  
Depreciation and amortization expenses 27 29 55 59  
Operating income (loss) 273 241 551 476  
Tegra Processor          
Revenue by Operating Segment and Geographic Region          
Revenue 128 159 273 298  
Depreciation and amortization expenses 11 15 26 29  
Operating income (loss) (41) (55) (99) (116)  
All Other          
Revenue by Operating Segment and Geographic Region          
Revenue 66 66 132 132  
Depreciation and amortization expenses 11 12 22 23  
Operating income (loss) $ (156) $ (23) $ (202) $ (46)