Condensed Financial Statements [Table Text Block] | Separate Financial Information of Guarantor Subsidiaries The New Unsecured Notes are registered under the Securities Act of 1933, as amended, and have no transfer restrictions or rights to additional interest. The New Unsecured Notes are fully and unconditionally guaranteed, jointly and severally, on a senior unsecured basis, subject to certain customary guarantor release conditions, by the WD Guarantors (or the “Guarantor Subsidiaries”). The guarantee by a Guarantor Subsidiary will be released in the event of (i) the designation of a Guarantor Subsidiary as an unrestricted subsidiary under the indenture governing the New Unsecured Notes , (ii) the release of a Guarantor Subsidiary from its guarantee of indebtedness under the Credit Agreement or other indebtedness that would have required the Guarantor Subsidiary to guarantee the New Unsecured Notes , (iii) the sale, issuance or other disposition of capital stock of a Guarantor Subsidiary such that it is no longer a restricted subsidiary under the indenture governing the New Unsecured Notes , (iv) the sale of all or substantially all of a Guarantor Subsidiary’s assets, (v) the Company’s exercise of its defeasance options under the indenture governing the New Unsecured Notes , (vi) the dissolution or liquidation of a Guarantor Subsidiary or (vii) the sale of all the equity interest in a Guarantor Subsidiary. The Company’s other domestic subsidiaries and its foreign subsidiaries (collectively, the “Non-Guarantor Subsidiaries”) do not guarantee the New Unsecured Notes . The following condensed consolidating financial information reflects the summarized financial information of Western Digital Corporation (“Parent”), the Guarantor Subsidiaries on a combined basis, and the Non-Guarantor Subsidiaries on a combined basis. For more information regarding the New Unsecured Notes , refer to Note 6 , Debt . Condensed Consolidating Balance Sheet As of June 30, 2017 Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total (in millions) ASSETS Current assets: Cash and cash equivalents $ 18 $ 1,212 $ 5,124 $ — $ 6,354 Short-term investments — — 24 — 24 Accounts receivable, net — 1,247 701 — 1,948 Intercompany receivable 1,225 2,528 622 (4,375 ) — Inventories — 1,133 1,494 (286 ) 2,341 Other current assets 4 158 221 6 389 Total current assets 1,247 6,278 8,186 (4,655 ) 11,056 Property, plant and equipment, net — 1,124 1,909 — 3,033 Notes receivable and investments in Flash Ventures — — 1,340 — 1,340 Goodwill — 331 9,683 — 10,014 Other intangible assets, net — 11 3,812 — 3,823 Investments in consolidated subsidiaries 19,082 17,588 — (36,670 ) — Loans due from consolidated affiliates 4,700 16 — (4,716 ) — Other non-current assets 51 723 419 (599 ) 594 Total assets $ 25,080 $ 26,071 $ 25,349 $ (46,640 ) $ 29,860 LIABILITIES AND SHAREHOLDERS’ EQUITY Current liabilities: Accounts payable $ — $ 257 $ 1,887 $ — $ 2,144 Intercompany payable 270 4,039 66 (4,375 ) — Accounts payable to Flash Ventures — — 206 — 206 Accrued expenses 270 360 439 — 1,069 Accrued compensation — 313 193 — 506 Accrued warranty — 4 182 — 186 Current portion of long-term debt 233 — — — 233 Total current liabilities 773 4,973 2,973 (4,375 ) 4,344 Long-term debt 12,889 — 29 — 12,918 Loans due to consolidated affiliates — 546 4,170 (4,716 ) — Other liabilities — 1,243 530 (593 ) 1,180 Total liabilities 13,662 6,762 7,702 (9,684 ) 18,442 Total shareholders’ equity 11,418 19,309 17,647 (36,956 ) 11,418 Total liabilities and shareholders’ equity $ 25,080 $ 26,071 $ 25,349 $ (46,640 ) $ 29,860 Condensed Consolidating Balance Sheet As of July 1, 2016 Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total (in millions) ASSETS Current assets: Cash and cash equivalents $ — $ 1,206 $ 6,945 $ — $ 8,151 Short-term investments — — 227 — 227 Accounts receivable, net — 985 476 — 1,461 Intercompany receivable 934 886 2,546 (4,366 ) — Inventories — 896 1,450 (217 ) 2,129 Other current assets 4 276 379 (43 ) 616 Total current assets 938 4,249 12,023 (4,626 ) 12,584 Property, plant and equipment, net — 1,265 2,238 — 3,503 Notes receivable and investments in Flash Ventures — — 1,171 — 1,171 Goodwill — 324 9,627 — 9,951 Other intangible assets, net — 28 5,006 — 5,034 Investments in consolidated subsidiaries 18,009 27,020 — (45,029 ) — Loans due from consolidated affiliates 6,000 55 — (6,055 ) — Other non-current assets 50 33 702 (166 ) 619 Total assets $ 24,997 $ 32,974 $ 30,767 $ (55,876 ) $ 32,862 LIABILITIES AND SHAREHOLDERS’ EQUITY Current liabilities: Accounts payable $ — $ 239 $ 1,649 $ — $ 1,888 Intercompany payable 119 4,043 204 (4,366 ) — Accounts payable to Flash Ventures — — 168 — 168 Accrued expenses 109 462 404 20 995 Accrued compensation — 222 170 — 392 Accrued warranty — 4 168 — 172 Bridge loan — 2,995 — — 2,995 Current portion of long-term debt 14 — 325 — 339 Total current liabilities 242 7,965 3,088 (4,346 ) 6,949 Long-term debt 13,610 — 50 — 13,660 Loans due to consolidated affiliates — 6,000 55 (6,055 ) — Other liabilities — 862 475 (229 ) 1,108 Total liabilities 13,852 14,827 3,668 (10,630 ) 21,717 Total shareholders’ equity 11,145 18,147 27,099 (45,246 ) 11,145 Total liabilities and shareholders’ equity $ 24,997 $ 32,974 $ 30,767 $ (55,876 ) $ 32,862 Condensed Consolidating Statement of Operations For the year ended June 30, 2017 Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total (in millions) Revenue, net $ — $ 14,732 $ 16,381 $ (12,020 ) $ 19,093 Cost of revenue — 12,786 12,203 (11,968 ) 13,021 Gross profit — 1,946 4,178 (52 ) 6,072 Operating expenses: Research and development — 1,619 822 — 2,441 Selling, general and administrative 6 1,006 433 — 1,445 Intercompany operating expense (income) — (1,736 ) 1,736 — — Employee termination, asset impairment, and other charges — 88 144 — 232 Total operating expenses 6 977 3,135 — 4,118 Operating income (loss) (6 ) 969 1,043 (52 ) 1,954 Interest and other income (expense): Interest income 347 11 22 (354 ) 26 Interest expense (843 ) (10 ) (348 ) 354 (847 ) Other income (expense), net (290 ) 49 (61 ) (62 ) (364 ) Total interest and other income (expense), net (786 ) 50 (387 ) (62 ) (1,185 ) Income (loss) before taxes (792 ) 1,019 656 (114 ) 769 Income tax expense (benefit) (282 ) 259 395 — 372 Equity in earnings from subsidiaries 907 287 — (1,194 ) — Net income $ 397 $ 1,047 $ 261 $ (1,308 ) $ 397 Condensed Consolidating Statement of Operations For the year ended July 1, 2016 Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total (in millions) Revenue, net $ — $ 12,600 $ 13,285 $ (12,891 ) $ 12,994 Cost of revenue — 11,796 10,662 (12,899 ) 9,559 Gross profit — 804 2,623 8 3,435 Operating expenses: Research and development — 1,095 532 — 1,627 Selling, general and administrative 4 645 348 — 997 Intercompany operating expense (income) — (1,087 ) 1,087 — — Employee termination, asset impairment, and other charges — 105 240 — 345 Total operating expenses 4 758 2,207 — 2,969 Operating income (loss) (4 ) 46 416 8 466 Interest and other income (expense): Interest income 54 2 24 (54 ) 26 Interest expense (184 ) (128 ) (8 ) 54 (266 ) Other income (expense), net 11 (30 ) (54 ) — (73 ) Total interest and other expense, net (119 ) (156 ) (38 ) — (313 ) Income (loss) before taxes (123 ) (110 ) 378 8 153 Income tax benefit (44 ) (27 ) (18 ) — (89 ) Equity in earnings from subsidiaries 321 400 — (721 ) — Net income $ 242 $ 317 $ 396 $ (713 ) $ 242 Condensed Consolidating Statement of Operations For the year ended July 3, 2015 Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total (in millions) Revenue, net $ — $ 14,942 $ 15,356 $ (15,726 ) $ 14,572 Cost of revenue — 14,086 11,935 (15,670 ) 10,351 Gross profit — 856 3,421 (56 ) 4,221 Operating expenses: Research and development — 1,191 455 — 1,646 Selling, general and administrative 4 548 236 — 788 Intercompany operating expense (income) — (1,237 ) 1,237 — — Employee termination, asset impairment and other charges — 49 127 — 176 Total operating expenses 4 551 2,055 — 2,610 Operating income (loss) (4 ) 305 1,366 (56 ) 1,611 Other income (expense): Interest income — 3 12 (1 ) 14 Interest expense — (46 ) (4 ) 1 (49 ) Other income (expense), net — — 1 — 1 Total other expense, net — (43 ) 9 — (34 ) Income (loss) before income taxes (4 ) 262 1,375 (56 ) 1,577 Income tax expense (benefit) (1 ) 108 5 — 112 Equity in earnings from consolidated subsidiaries 1,468 1,381 — (2,849 ) — Net income $ 1,465 $ 1,535 $ 1,370 $ (2,905 ) $ 1,465 Condensed Consolidating Statement of Comprehensive Income (Loss) For the year ended June 30, 2017 Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total (in millions) Net income $ 397 $ 1,047 $ 261 $ (1,308 ) $ 397 Other comprehensive loss, before tax: Actuarial pension gain 39 39 39 (78 ) 39 Foreign currency translation adjustment (115 ) (113 ) (136 ) 249 (115 ) Net unrealized loss on derivative contracts (77 ) (77 ) (75 ) 152 (77 ) Net unrealized gain on available-for-sale securities 2 2 2 (4 ) 2 Total other comprehensive loss, before tax (151 ) (149 ) (170 ) 319 (151 ) Income tax expense related to items of other comprehensive loss (10 ) (10 ) (8 ) 18 (10 ) Other comprehensive loss, net of tax (161 ) (159 ) (178 ) 337 (161 ) Total comprehensive income $ 236 $ 888 $ 83 $ (971 ) $ 236 Condensed Consolidating Statement of Comprehensive Income (Loss) For the year ended July 1, 2016 Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total (in millions) Net income $ 242 $ 317 $ 396 $ (713 ) $ 242 Other comprehensive income, before tax: Actuarial pension loss (73 ) (73 ) (73 ) 146 (73 ) Foreign currency translation adjustment 74 74 74 (148 ) 74 Net unrealized gain on derivative contracts 99 99 93 (192 ) 99 Total other comprehensive income, before tax 100 100 94 (194 ) 100 Income tax benefit related to items of other comprehensive income 23 23 23 (46 ) 23 Other comprehensive income, net of tax 123 123 117 (240 ) 123 Total comprehensive income $ 365 $ 440 $ 513 $ (953 ) $ 365 Condensed Consolidating Statement of Comprehensive Income (Loss) For the year ended July 3, 2015 Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total (in millions) Net income $ 1,465 $ 1,535 $ 1,370 $ (2,905 ) $ 1,465 Other comprehensive income (loss), before tax: Actuarial pension loss (2 ) (2 ) (2 ) 4 (2 ) Net unrealized gain (loss) on derivative contracts (30 ) (30 ) (25 ) 55 (30 ) Total other comprehensive loss, before tax (32 ) (32 ) (27 ) 59 (32 ) Income tax benefit related to items of other comprehensive income (loss) — — — — — Other comprehensive loss, net of tax (32 ) (32 ) (27 ) 59 (32 ) Total comprehensive income $ 1,433 $ 1,503 $ 1,343 $ (2,846 ) $ 1,433 Condensed Consolidating Statement of Cash Flows For the year ended June 30, 2017 Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total (in millions) Cash flows from operating activities Net cash provided by (used in) operating activities $ (360 ) $ (836 ) $ 4,593 $ 40 $ 3,437 Cash flows from investing activities Purchases of property, plant and equipment — (240 ) (338 ) — (578 ) Proceeds from the sale of property, plant and equipment — — 21 — 21 Purchases of investments — — (281 ) — (281 ) Proceeds from sale of investments — — 94 — 94 Proceeds from maturities of investments — — 417 — 417 Investments in Flash Ventures — — (20 ) — (20 ) Notes receivable issuances to Flash Ventures — — (549 ) — (549 ) Notes receivable proceeds from Flash Ventures — — 292 — 292 Strategic investments and other, net — (1 ) (31 ) — (32 ) Intercompany loan from consolidated affiliates 1,300 39 — (1,339 ) — Advances from (to) parent and consolidated affiliates (158 ) 166 — (8 ) — Net cash provided by (used in) investing activities 1,142 (36 ) (395 ) (1,347 ) (636 ) Cash flows from financing activities Issuance of stock under employee stock plans 235 — — — 235 Taxes paid on vested stock awards under employee stock plans (124 ) — — — (124 ) Excess tax benefits from employee stock plans 119 — — — 119 Proceeds from acquired call option — — 61 — 61 Settlement of convertible debt — — (492 ) — (492 ) Dividends paid to shareholders (574 ) — — — (574 ) Settlement of debt hedge contracts — (21 ) — — (21 ) Repayment of debt (8,702 ) (2,995 ) — — (11,697 ) Proceeds from debt 7,908 — — — 7,908 Debt issuance costs (10 ) — — — (10 ) Intercompany loan from (to) consolidated affiliates — (5,454 ) 4,115 1,339 — Change in investment in consolidated subsidiaries 384 9,348 (9,700 ) (32 ) — Net cash provided by (used in) financing activities (764 ) 878 (6,016 ) 1,307 (4,595 ) Effect of exchange rate changes on cash — — (3 ) — (3 ) Net increase (decrease) in cash and cash equivalents 18 6 (1,821 ) — (1,797 ) Cash and cash equivalents, beginning of year — 1,206 6,945 — 8,151 Cash and cash equivalents, end of year $ 18 $ 1,212 $ 5,124 $ — $ 6,354 Condensed Consolidating Statement of Cash Flows For the year ended July 1, 2016 Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total (in millions) Cash flows from operating activities Net cash provided by (used in) operating activities $ (210 ) $ 1,018 $ 1,299 $ (124 ) $ 1,983 Cash flows from investing activities Purchases of property, plant and equipment — (233 ) (351 ) — (584 ) Acquisitions, net of cash acquired — (13,767 ) 3,932 — (9,835 ) Purchases of investments — — (632 ) — (632 ) Proceeds from sale of investments — — 1,204 — 1,204 Proceeds from maturities of investments — — 405 — 405 Notes receivable issuances to Flash Ventures — — (106 ) — (106 ) Notes receivable proceeds from Flash Ventures — — 16 — 16 Strategic investments and other, net (34 ) (10 ) (32 ) — (76 ) Intercompany loans from (to) consolidated affiliates (6,000 ) 40 — 5,960 — Advances to consolidated affiliates (8,845 ) (96 ) (229 ) 9,170 — Net cash provided by (used in) investing activities (14,879 ) (14,066 ) 4,207 15,130 (9,608 ) Cash flows from financing activities Issuance of stock under employee stock plans 117 — — — 117 Taxes paid on vested stock awards under employee stock plans (50 ) — — — (50 ) Excess tax benefits from employee stock plans 7 — — — 7 Proceeds from acquired call option — — 409 — 409 Settlement of convertible debt — — (2,611 ) — (2,611 ) Repurchases of common stock (60 ) — — — (60 ) Proceeds from revolving credit facility — 125 — — 125 Repayment of revolving credit facility — (125 ) (255 ) — (380 ) Dividends paid to shareholders (464 ) — — — (464 ) Repayment of debt — (2,313 ) — — (2,313 ) Proceeds from debt 14,108 3,000 — — 17,108 Debt issuance costs (497 ) (27 ) — — (524 ) Payment upon settlement of acquired warrants — — (613 ) — (613 ) Intercompany loan from (to) consolidated affiliates — 6,000 (40 ) (5,960 ) — Change in investment in consolidated subsidiaries 1,928 6,933 185 (9,046 ) — Net cash provided by (used in) financing activities 15,089 13,593 (2,925 ) (15,006 ) 10,751 Effect of exchange rate changes on cash — — 1 — 1 Net increase in cash and cash equivalents — 545 2,582 — 3,127 Cash and cash equivalents, beginning of year — 661 4,363 — 5,024 Cash and cash equivalents, end of year $ — $ 1,206 $ 6,945 $ — $ 8,151 Condensed Consolidating Statement of Cash Flows For the year ended July 3, 2015 Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total (in millions) Cash flows from operating activities Net cash provided by operating activities $ 23 $ 150 $ 2,066 $ 3 $ 2,242 Cash flows from investing activities Purchases of property, plant and equipment — (189 ) (423 ) — (612 ) Acquisitions, net of cash acquired — (16 ) (241 ) — (257 ) Purchases of investments — (130 ) (727 ) — (857 ) Proceeds from sale of investments — 463 42 — 505 Proceeds from maturities of investments — 167 96 — 263 Strategic investments and other, net — 6 (1 ) — 5 Return of capital from subsidiaries — 255 — (255 ) — Intercompany loan to consolidated affiliates — (60 ) — 60 — Advances to (from) parent and consolidated affiliates 1,015 (114 ) 2 (903 ) — Net cash provided by (used in) investing activities 1,015 382 (1,252 ) (1,098 ) (953 ) Cash flows from financing activities Issuance of stock under employee stock plans 212 — — — 212 Taxes paid on vested stock awards under employee stock plans (64 ) — — — (64 ) Excess tax benefits from employee stock plans 19 — — — 19 Repurchases of common stock (970 ) — — — (970 ) Dividends paid to shareholders (396 ) — — — (396 ) Repayment of debt — (125 ) — — (125 ) Proceeds from debt — — 255 — 255 Return of capital to parent — — (255 ) 255 — Intercompany loan from parent — — 60 (60 ) — Change in investment in consolidated subsidiaries 161 (1,071 ) 10 900 — Net cash provided by (used in) financing activities (1,038 ) (1,196 ) 70 1,095 (1,069 ) Net increase (decrease) in cash and cash equivalents — (664 ) 884 — 220 Cash and cash equivalents, beginning of year — 1,325 3,479 — 4,804 Cash and cash equivalents, end of year $ — $ 661 $ 4,363 $ — $ 5,024 |