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Segment Information (Details)
$ in Millions
3 Months Ended 9 Months Ended
Oct. 25, 2015
USD ($)
Oct. 26, 2014
USD ($)
Oct. 25, 2015
USD ($)
Oct. 26, 2014
USD ($)
Jan. 25, 2015
Revenue by Operating Segment and Geographic Region          
Revenue $ 1,305 $ 1,225 $ 3,609 $ 3,431  
Depreciation and amortization expenses 48 56 151 166  
Operating income (loss) $ 245 $ 213 $ 495 $ 528  
Revenue from significant customers (in percent) 10.00% 10.00% 11.00% 10.00%  
Number of customers with significant revenue 1 1 1 1  
Accounts receivable from significant customers (in percent) 19.00%   19.00%   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 $ (60) $ (42) $ (181) $ (128)  
Stock-based compensation expense (51) (42) (145) (115)  
Acquisition-related costs (4) (10) (18) (28)  
Product warranty charge related to recall 0 0 (15) 0  
Restructuring and other charges (8) 0 (97) 0  
Taiwan          
Revenue by Operating Segment and Geographic Region          
Revenue 515 406 1,348 1,109  
China          
Revenue by Operating Segment and Geographic Region          
Revenue 229 238 583 714  
United States          
Revenue by Operating Segment and Geographic Region          
Revenue 156 215 474 595  
Other Asia Pacific          
Revenue by Operating Segment and Geographic Region          
Revenue 181 170 554 475  
Other Americas          
Revenue by Operating Segment and Geographic Region          
Revenue 108 100 309 275  
Europe          
Revenue by Operating Segment and Geographic Region          
Revenue 116 96 341 263  
GPU          
Revenue by Operating Segment and Geographic Region          
Revenue 1,110 991 3,009 2,767  
Depreciation and amortization expenses 26 29 81 88  
Operating income (loss) 367 294 917 770  
Tegra Processor          
Revenue by Operating Segment and Geographic Region          
Revenue 129 168 402 466  
Depreciation and amortization expenses 11 15 36 43  
Operating income (loss) (65) (53) (164) (169)  
All Other          
Revenue by Operating Segment and Geographic Region          
Revenue 66 66 198 198  
Depreciation and amortization expenses 11 12 34 35  
Operating income (loss) $ (57) $ (28) $ (258) $ (73)