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Supplementary Financial Data - Quarterly Data (Unaudited) (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 12 Months Ended
Nov. 04, 2018
Aug. 05, 2018
May 06, 2018
Feb. 04, 2018
Oct. 29, 2017
Jul. 30, 2017
Apr. 30, 2017
Jan. 29, 2017
Nov. 04, 2018
Oct. 29, 2017
Oct. 30, 2016
Net revenue $ 5,444 $ 5,063 $ 5,014 $ 5,327 $ 4,844 $ 4,463 $ 4,190 $ 4,139 $ 20,848 $ 17,636 $ 13,240
Gross margin 2,935 2,619 2,551 2,628 2,383 2,149 1,976 2,001 10,733 8,509 5,940
Operating income (loss) 1,652 [1] 1,339 [2] 1,201 [3] 943 [4] 755 [5] 648 [6] 474 [7] 506 [8] 5,135 2,383 (409)
Income (loss) from continuing operations 1,115 [1] 1,197 [2] 3,736 [3] 6,581 [4] 556 [5] 509 [6] 468 [7] 257 [8] 12,629 1,790 (1,749)
Loss from discontinued operations, net of income taxes 0 [1] (1) [2] (3) [3] (15) [4] 5 [5] (2) [6] (4) [7] (5) [8] (19) (6) (112)
Net Income (Loss) 1,115 [1] 1,196 [2] 3,733 [3] 6,566 [4] 561 [5] 507 [6] 464 [7] 252 [8] 12,610 1,784 (1,861)
Net income (loss) attributable to noncontrolling interest 0 0 15 336 29 26 24 13 351 92 (122)
Net income (loss) attributable to common stock $ 1,115 $ 1,196 $ 3,718 $ 6,230 $ 532 $ 481 $ 440 $ 239 $ 12,259 $ 1,692 $ (1,739)
Income (loss) per share from continuing operations (in dollars per share)                 $ 29.37 $ 4.19 $ (4.46)
Income (loss) per share from discontinued operations (in dollars per share)                 (0.04) (0.01) (0.29)
Income (Loss) from Continuing Operations, Per Diluted Share $ 2.64 $ 2.71 $ 8.34 $ 14.66 $ 1.24 $ 1.14 $ 1.06 $ 0.58 28.48 4.03 (4.57)
Net income (loss) per share (in dollars per share)                 29.33 4.18 (4.75)
Earnings Per Share, Diluted 2.64 2.71 8.33 14.62 1.25 1.14 1.05 0.57 28.44 4.02 (4.86)
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share 0.00 0.00 (0.01) (0.04) 0.01 0.00 (0.01) (0.01) (0.04) (0.01) $ (0.29)
Dividends declared and paid per share (dollars per share) $ 1.75 $ 1.75 $ 1.75 $ 1.75 $ 1.02 $ 1.02 $ 1.02 $ 1.02 $ 7.00 $ 4.08  
Intangible Assets Amortization, Total $ 829 $ 830 $ 832 $ 1,054 $ 1,099 $ 1,096 $ 1,081 $ 999      
Litigation settlements         $ 110       $ 14 $ 122 $ 0
Restructuring, impairment and disposal charges       145         219 161 996
Impairment on investment $ (106)               (106) 0 0
Purchase accounting effect on inventory       $ 70         70 4 1,185
Loss on extinguishment of debt               $ 159 0 $ (166) $ (123)
BRCM [Member]                      
Net revenue                 $ 6,993    
[1] Includes amortization of acquisition-related intangible assets of $829 million and impairment on investment of $106 million.
[2] Includes amortization of acquisition-related intangible assets of $830 million.
[3] Includes amortization of acquisition-related intangible assets of $832 million.
[4] Includes the results of Brocade beginning with the fiscal quarter ended February 4, 2018 in connection with the completion of the Brocade Merger on November 17, 2017. Also includes amortization of acquisition-related intangible assets of $1,054 million, a purchase accounting effect on inventory charge of $70 million and restructuring, impairment and disposal charges of $145 million.
[5] Includes amortization of acquisition-related intangible assets of $1,099 million and $110 million of litigation settlement charges.
[6] Includes amortization of acquisition-related intangible assets of $1,096 million.
[7] Includes amortization of acquisition-related intangible assets of $1,081 million.
[8] Includes amortization of acquisition-related intangible assets of $999 million and a loss on debt extinguishment of $159 million.