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Condensed Consolidating Financial Information (Statements of Operations and Comprehensive Income) (Details) - USD ($)
$ 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
Condensed Income Statements, Captions [Line Items]                      
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)
Net revenue 5,444 5,063 5,014 5,327 4,844 4,463 4,190 4,139 20,848 17,636 13,240
Intercompany revenue                 0 0 0
Total revenue                 20,848 17,636 13,240
Cost of products sold                 7,021 6,593 5,295
Intercompany cost of products sold                 0 0 0
Purchase accounting effect on inventory       70         70 4 1,185
Amortization of acquisition-related intangible assets - cost of products sold                 3,004 2,511 763
Restructuring charges                 20 19 57
Total cost of products sold                 10,115 9,127 7,300
Gross margin 2,935 2,619 2,551 2,628 2,383 2,149 1,976 2,001 10,733 8,509 5,940
Research and development                 3,768 3,292 2,674
Intercompany operating expense                 0 0 0
Selling, general and administrative                 1,056 787 806
Amortization of acquisition-related intangible assets - operating expenses                 541 1,764 1,873
Restructuring, impairment and disposal charges       145         219 161 996
Litigation settlements         110       14 122 0
Total operating expenses                 5,598 6,126 6,349
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)
Interest expense                 (628) (454) (585)
Intercompany interest expense                 0 0 0
Loss on extinguishment of debt               159 0 (166) (123)
Impairment on investment (106)               (106) 0 0
Other income, net                 144 62 10
Intercompany interest income                 0 0 0
Intercompany other income (expense), net                 0 0 0
Income (loss) from continuing operations before loss from subsidiaries 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)
Income (loss) from continuing operations before income taxes                 4,545 1,825 (1,107)
Provision for (benefit from) income taxes                 (8,084) 35 642
Earnings in subsidiaries                 0 0 0
Income from continuing operations and earnings in subsidiaries                 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)
Other Comprehensive Income                      
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)
Reclassification to net income (loss)                 8 43 (61)
Other comprehensive income (loss)                 (8) 43 (61)
Comprehensive income (loss)                 12,602 1,827 (1,922)
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest                 351 92 (122)
Comprehensive income (loss) attributable to common stock                 12,251 1,735 (1,800)
Eliminations [Member]                      
Condensed Income Statements, Captions [Line Items]                      
Net income (loss) attributable to noncontrolling interest                 0 0 0
Net income (loss) attributable to common stock                 (43,867) (6,814) 7,565
Net revenue                 0 0 0
Intercompany revenue                 (1,924) (2,054) (408)
Total revenue                 (1,924) (2,054) (408)
Cost of products sold                 0 0 0
Intercompany cost of products sold                 (126) (162) (408)
Purchase accounting effect on inventory                 0 0 0
Amortization of acquisition-related intangible assets - cost of products sold                 0 0 0
Restructuring charges                 0 0 0
Total cost of products sold                 (126) (162) (408)
Gross margin                 (1,798) (1,892) 0
Research and development                 0 0 0
Intercompany operating expense                 (1,798) (1,892) 0
Selling, general and administrative                 0 0 0
Amortization of acquisition-related intangible assets - operating expenses                 0 0 0
Restructuring, impairment and disposal charges                 0 0 0
Litigation settlements                 0 0  
Total operating expenses                 (1,798) (1,892) 0
Operating income (loss)                 0 0 0
Interest expense                 0 0 0
Intercompany interest expense                 1,715 1,706 268
Loss on extinguishment of debt                   0 0
Impairment on investment                 0    
Other income, net                 0 0 0
Intercompany interest income                 (1,715) (1,706) (268)
Intercompany other income (expense), net                 0 0 0
Income (loss) from continuing operations before loss from subsidiaries                 0 0 0
Income (loss) from continuing operations before income taxes                 0 0 0
Provision for (benefit from) income taxes                 0 0 0
Earnings in subsidiaries                 (43,867) (6,814) 7,565
Income from continuing operations and earnings in subsidiaries                 (43,867) (6,814) 7,565
Loss from discontinued operations, net of income taxes                 0 0 0
Net Income (Loss)                 (43,867) (6,814) 7,565
Other Comprehensive Income                      
Net Income (Loss)                 (43,867) (6,814) 7,565
Reclassification to net income (loss)                 0 0 0
Other comprehensive income (loss)                 0 0 0
Comprehensive income (loss)                 (43,867) (6,814) 7,565
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest                 0 0 0
Comprehensive income (loss) attributable to common stock                 (43,867) (6,814) 7,565
Parent Guarantor [Member]                      
Condensed Income Statements, Captions [Line Items]                      
Net income (loss) attributable to noncontrolling interest                 0 0 0
Net income (loss) attributable to common stock                 12,259 1,692 (1,739)
Net revenue                 0 0 0
Intercompany revenue                 0 0 0
Total revenue                 0 0 0
Cost of products sold                 0 0 0
Intercompany cost of products sold                 0 0 0
Purchase accounting effect on inventory                 0 0 0
Amortization of acquisition-related intangible assets - cost of products sold                 0 0 0
Restructuring charges                 0 0 0
Total cost of products sold                 0 0 0
Gross margin                 0 0 0
Research and development                 0 0 0
Intercompany operating expense                 0 0 0
Selling, general and administrative                 31 0 0
Amortization of acquisition-related intangible assets - operating expenses                 0 0 0
Restructuring, impairment and disposal charges                 0 0 0
Litigation settlements                 0 0  
Total operating expenses                 31 0 0
Operating income (loss)                 (31) 0 0
Interest expense                 0 0 0
Intercompany interest expense                 (67) 0 0
Loss on extinguishment of debt                   0 0
Impairment on investment                 0    
Other income, net                 0 0 0
Intercompany interest income                 0 0 0
Intercompany other income (expense), net                 111 0 0
Income (loss) from continuing operations before loss from subsidiaries                 (31) 0 0
Income (loss) from continuing operations before income taxes                 13 0 0
Provision for (benefit from) income taxes                 44 0 0
Earnings in subsidiaries                 12,290 1,692 (1,739)
Income from continuing operations and earnings in subsidiaries                 12,259 1,692 (1,739)
Loss from discontinued operations, net of income taxes                 0 0 0
Net Income (Loss)                 12,259 1,692 (1,739)
Other Comprehensive Income                      
Net Income (Loss)                 12,259 1,692 (1,739)
Reclassification to net income (loss)                 0 0 0
Other comprehensive income (loss)                 0 0 0
Comprehensive income (loss)                 12,259 1,692 (1,739)
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest                 0 0 0
Comprehensive income (loss) attributable to common stock                 12,259 1,692 (1,739)
Guarantor Subsidiaries [Member]                      
Condensed Income Statements, Captions [Line Items]                      
Net income (loss) attributable to noncontrolling interest                 351 92 (122)
Net income (loss) attributable to common stock                 12,456 1,692 (1,739)
Net revenue                 0 0 0
Intercompany revenue                 0 0 0
Total revenue                 0 0 0
Cost of products sold                 0 0 0
Intercompany cost of products sold                 0 0 0
Purchase accounting effect on inventory                 0 0 0
Amortization of acquisition-related intangible assets - cost of products sold                 0   0
Restructuring charges                 0 0 0
Total cost of products sold                 0 0 0
Gross margin                 0 0 0
Research and development                 0 0 0
Intercompany operating expense                 0 0 0
Selling, general and administrative                 80 23 41
Amortization of acquisition-related intangible assets - operating expenses                 0   0
Restructuring, impairment and disposal charges                 0 0 0
Litigation settlements                 0 0  
Total operating expenses                 80 23 41
Operating income (loss)                 (80) (23) (41)
Interest expense                 0 0 0
Intercompany interest expense                 0 (12) (3)
Loss on extinguishment of debt                   0 0
Impairment on investment                 0    
Other income, net                 4 2 0
Intercompany interest income                 1 1 1
Intercompany other income (expense), net                 230 1,390 753
Income (loss) from continuing operations before loss from subsidiaries                 153 1,358 710
Income (loss) from continuing operations before income taxes                 155 1,358 710
Provision for (benefit from) income taxes                 2 0 0
Earnings in subsidiaries                 12,654 426 (2,571)
Income from continuing operations and earnings in subsidiaries                 12,807 1,784 (1,861)
Loss from discontinued operations, net of income taxes                 0 0 0
Net Income (Loss)                 12,807 1,784 (1,861)
Other Comprehensive Income                      
Net Income (Loss)                 12,807 1,784 (1,861)
Reclassification to net income (loss)                 0 0 0
Other comprehensive income (loss)                 0 0 0
Comprehensive income (loss)                 12,807 1,784 (1,861)
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest                 351 92 (122)
Comprehensive income (loss) attributable to common stock                 12,456 1,692 (1,739)
Subsidiaries Issuers [Member]                      
Condensed Income Statements, Captions [Line Items]                      
Net income (loss) attributable to noncontrolling interest                 0 0 0
Net income (loss) attributable to common stock                 12,654 426 (2,571)
Net revenue                 0 73 402
Intercompany revenue                 1,924 2,046 353
Total revenue                 1,924 2,119 755
Cost of products sold                 132 154 237
Intercompany cost of products sold                 0 (12) (149)
Purchase accounting effect on inventory                 0 0 15
Amortization of acquisition-related intangible assets - cost of products sold                 0 7 14
Restructuring charges                 1 5 36
Total cost of products sold                 133 154 153
Gross margin                 1,791 1,965 602
Research and development                 1,651 1,490 1,237
Intercompany operating expense                 0 (66) (1,337)
Selling, general and administrative                 297 339 254
Amortization of acquisition-related intangible assets - operating expenses                 0 7 82
Restructuring, impairment and disposal charges                 53 54 309
Litigation settlements                 14 0  
Total operating expenses                 2,015 1,824 545
Operating income (loss)                 (224) 141 57
Interest expense                 (626) (411) (312)
Intercompany interest expense                 (199) (274) (262)
Loss on extinguishment of debt                   (59) (113)
Impairment on investment                 0    
Other income, net                 88 30 (27)
Intercompany interest income                 1,516 1,425 2
Intercompany other income (expense), net                 (56) (589) (277)
Income (loss) from continuing operations before loss from subsidiaries                 8,542 196 (1,379)
Income (loss) from continuing operations before income taxes                 499 263 (932)
Provision for (benefit from) income taxes                 (8,043) 67 447
Earnings in subsidiaries                 4,114 243 (1,034)
Income from continuing operations and earnings in subsidiaries                 12,656 439 (2,413)
Loss from discontinued operations, net of income taxes                 (2) (13) (158)
Net Income (Loss)                 12,654 426 (2,571)
Other Comprehensive Income                      
Net Income (Loss)                 12,654 426 (2,571)
Reclassification to net income (loss)                 0 0 0
Other comprehensive income (loss)                 0 0 0
Comprehensive income (loss)                 12,654 426 (2,571)
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest                 0 0 0
Comprehensive income (loss) attributable to common stock                 12,654 426 (2,571)
Non-Guarantor Subsidiaries [Member]                      
Condensed Income Statements, Captions [Line Items]                      
Net income (loss) attributable to noncontrolling interest                 0 0 0
Net income (loss) attributable to common stock                 18,757 4,696 (3,255)
Net revenue                 20,848 17,563 12,838
Intercompany revenue                 0 8 55
Total revenue                 20,848 17,571 12,893
Cost of products sold                 6,889 6,439 5,058
Intercompany cost of products sold                 126 174 557
Purchase accounting effect on inventory                 70 4 1,170
Amortization of acquisition-related intangible assets - cost of products sold                 3,004 2,504 749
Restructuring charges                 19 14 21
Total cost of products sold                 10,108 9,135 7,555
Gross margin                 10,740 8,436 5,338
Research and development                 2,117 1,802 1,437
Intercompany operating expense                 1,798 1,958 1,337
Selling, general and administrative                 648 425 511
Amortization of acquisition-related intangible assets - operating expenses                 541 1,757 1,791
Restructuring, impairment and disposal charges                 166 107 687
Litigation settlements                 0 122  
Total operating expenses                 5,270 6,171 5,763
Operating income (loss)                 5,470 2,265 (425)
Interest expense                 (2) (43) (273)
Intercompany interest expense                 (1,449) (1,420) (3)
Loss on extinguishment of debt                   (107) (10)
Impairment on investment                 (106)    
Other income, net                 52 30 37
Intercompany interest income                 198 280 265
Intercompany other income (expense), net                 (285) (801) (476)
Income (loss) from continuing operations before loss from subsidiaries                 3,965 236 (1,080)
Income (loss) from continuing operations before income taxes                 3,878 204 (885)
Provision for (benefit from) income taxes                 (87) (32) 195
Earnings in subsidiaries                 14,809 4,453 (2,221)
Income from continuing operations and earnings in subsidiaries                 18,774 4,689 (3,301)
Loss from discontinued operations, net of income taxes                 (17) 7 46
Net Income (Loss)                 18,757 4,696 (3,255)
Other Comprehensive Income                      
Net Income (Loss)                 18,757 4,696 (3,255)
Reclassification to net income (loss)                 8 43 (61)
Other comprehensive income (loss)                 (8) 43 (61)
Comprehensive income (loss)                 18,749 4,739 (3,316)
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest                 0 0 0
Comprehensive income (loss) attributable to common stock                 $ 18,749 $ 4,739 $ (3,316)
[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.