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 to the condensed consolidated financial statements. Condensed Consolidating Balance Sheet As of March 31, 2017 Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total (in millions) ASSETS Current assets: Cash and cash equivalents $ 270 $ 856 $ 4,526 $ — $ 5,652 Short-term investments — — 25 — 25 Accounts receivable, net — 1,212 736 — 1,948 Intercompany receivable 1,143 1,997 2,923 (6,063 ) — Inventories — 1,067 1,458 (271 ) 2,254 Other current assets 5 216 223 (10 ) 434 Total current assets 1,418 5,348 9,891 (6,344 ) 10,313 Property, plant and equipment, net — 1,170 1,929 — 3,099 Notes receivable and investments in Flash Ventures — — 1,291 — 1,291 Goodwill — 325 9,687 — 10,012 Other intangible assets, net — 15 4,129 — 4,144 Investments in consolidated subsidiaries 18,344 18,199 — (36,543 ) — Loans due from consolidated affiliates 5,005 313 — (5,318 ) — Other non-current assets 46 89 478 (24 ) 589 Total assets $ 24,813 $ 25,459 $ 27,405 $ (48,229 ) $ 29,448 LIABILITIES AND SHAREHOLDERS’ EQUITY Current liabilities: Accounts payable $ — $ 264 $ 1,921 $ — $ 2,185 Intercompany payable 171 5,233 659 (6,063 ) — Accounts payable to related parties — — 194 — 194 Accrued expenses 254 473 353 (7 ) 1,073 Accrued compensation — 291 189 — 480 Accrued warranty — 4 192 — 196 Current portion of long-term debt 181 — — — 181 Total current liabilities 606 6,265 3,508 (6,070 ) 4,309 Long-term debt 12,878 — 29 — 12,907 Loans due to consolidated affiliates 298 34 4,986 (5,318 ) — Other liabilities — 619 609 (27 ) 1,201 Total liabilities 13,782 6,918 9,132 (11,415 ) 18,417 Shareholders’ equity 11,031 18,541 18,273 (36,814 ) 11,031 Total liabilities and shareholders’ equity $ 24,813 $ 25,459 $ 27,405 $ (48,229 ) $ 29,448 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 related parties — — 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 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 three months ended March 31, 2017 Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total (in millions) Revenue, net $ — $ 3,406 $ 4,333 $ (3,090 ) $ 4,649 Cost of revenue — 2,791 3,403 (3,068 ) 3,126 Gross profit — 615 930 (22 ) 1,523 Operating expenses: Research and development — 413 200 — 613 Selling, general, and administrative 1 240 105 — 346 Intercompany operating expense (income) — (282 ) 282 — — Employee termination, asset impairment, and other charges — 30 9 — 39 Total operating expenses 1 401 596 — 998 Operating income (loss) (1 ) 214 334 (22 ) 525 Interest and other income (expense): Interest income 88 8 6 (95 ) 7 Interest expense (211 ) — (89 ) 95 (205 ) Other expense, net (9 ) (6 ) (8 ) — (23 ) Total interest and other income (expense), net (132 ) 2 (91 ) — (221 ) Income (loss) before taxes (133 ) 216 243 (22 ) 304 Income tax expense (benefit) (26 ) 56 26 — 56 Equity in earnings from subsidiaries 355 229 — (584 ) — Net income $ 248 $ 389 $ 217 $ (606 ) $ 248 Condensed Consolidating Statement of Operations For the nine months ended March 31, 2017 Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total (in millions) Revenue, net $ — $ 10,890 $ 12,871 $ (9,510 ) $ 14,251 Cost of revenue — 8,941 10,451 (9,532 ) 9,860 Gross profit — 1,949 2,420 22 4,391 Operating expenses: Research and development — 1,226 611 — 1,837 Selling, general, and administrative 5 766 329 — 1,100 Intercompany operating expense (income) — (851 ) 851 — — Employee termination, asset impairment, and other charges — 88 64 — 152 Total operating expenses 5 1,229 1,855 — 3,089 Operating income (loss) (5 ) 720 565 22 1,302 Interest and other income (expense): Interest income 268 9 15 (275 ) 17 Interest expense (642 ) (5 ) (274 ) 275 (646 ) Other expense, net (283 ) (10 ) (26 ) — (319 ) Total interest and other expense, net (657 ) (6 ) (285 ) — (948 ) Income (loss) before taxes (662 ) 714 280 22 354 Income tax expense (benefit) (207 ) 177 267 — 237 Equity in earnings from subsidiaries 572 21 — (593 ) — Net income $ 117 $ 558 $ 13 $ (571 ) $ 117 Condensed Consolidating Statement of Operations For the three months ended April 1, 2016 Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total (in millions) Revenue, net $ — $ 2,959 $ 2,895 $ (3,032 ) $ 2,822 Cost of revenue — 2,780 2,310 (3,021 ) 2,069 Gross profit — 179 585 (11 ) 753 Operating expenses: Research and development — 252 107 — 359 Selling, general, and administrative 1 134 31 — 166 Intercompany operating expense (income) — (255 ) 255 — — Employee termination, asset impairment, and other charges — 9 131 — 140 Total operating expenses 1 140 524 — 665 Operating income (loss) (1 ) 39 61 (11 ) 88 Interest and other income (expense): Interest income — — 6 — 6 Interest expense — (13 ) (1 ) — (14 ) Total interest and other income (expense), net — (13 ) 5 — (8 ) Income (loss) before taxes (1 ) 26 66 (11 ) 80 Income tax expense (benefit) (1 ) 4 3 — 6 Equity in earnings from subsidiaries 74 60 — (134 ) — Net income $ 74 $ 82 $ 63 $ (145 ) $ 74 Condensed Consolidating Statement of Operations For the nine months ended April 1, 2016 Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total (in millions) Revenue, net $ — $ 9,796 $ 9,919 $ (10,216 ) $ 9,499 Cost of revenue — 9,190 7,888 (10,193 ) 6,885 Gross profit — 606 2,031 (23 ) 2,614 Operating expenses: Research and development — 831 302 — 1,133 Selling, general, and administrative 3 443 151 — 597 Intercompany operating expense (income) — (845 ) 845 — — Employee termination, asset impairment, and other charges — 79 144 — 223 Total operating expenses 3 508 1,442 — 1,953 Operating income (loss) (3 ) 98 589 (23 ) 661 Interest and other income (expense): Interest income — 1 14 — 15 Interest expense — (35 ) (5 ) — (40 ) Other income, net — — 2 — 2 Total interest and other income (expense), net — (34 ) 11 — (23 ) Income (loss) before taxes (3 ) 64 600 (23 ) 638 Income tax expense (benefit) (1 ) 56 (25 ) — 30 Equity in earnings from subsidiaries 610 622 — (1,232 ) — Net income $ 608 $ 630 $ 625 $ (1,255 ) $ 608 Condensed Consolidating Statement of Comprehensive Income (Loss) For the three months ended March 31, 2017 Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total (in millions) Net income $ 248 $ 389 $ 217 $ (606 ) $ 248 Other comprehensive income, before tax: Actuarial pension gain 1 1 1 (2 ) 1 Foreign currency translation adjustment 58 58 58 (116 ) 58 Net unrealized gain on foreign exchange contracts 45 42 41 (83 ) 45 Total other comprehensive income, before tax 104 101 100 (201 ) 104 Income tax expense related to items of other comprehensive income (3 ) (3 ) (2 ) 5 (3 ) Other comprehensive income, net of tax 101 98 98 (196 ) 101 Total comprehensive income $ 349 $ 487 $ 315 $ (802 ) $ 349 Condensed Consolidating Statement of Comprehensive Income (Loss) For the nine months ended March 31, 2017 Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total (in millions) Net income $ 117 $ 558 $ 13 $ (571 ) $ 117 Other comprehensive loss, before tax: Actuarial pension gain 7 7 7 (14 ) 7 Foreign currency translation adjustment (111 ) (111 ) (134 ) 245 (111 ) Net unrealized loss on foreign exchange contracts (95 ) (98 ) (95 ) 193 (95 ) Total other comprehensive loss, before tax (199 ) (202 ) (222 ) 424 (199 ) Income tax benefit (expense) related to items of other comprehensive loss — — (1 ) 1 — Other comprehensive loss, net of tax (199 ) (202 ) (223 ) 425 (199 ) Total comprehensive income (loss) $ (82 ) $ 356 $ (210 ) $ (146 ) $ (82 ) Condensed Consolidating Statement of Comprehensive Income (Loss) For the three months ended April 1, 2016 Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total (in millions) Net income $ 74 $ 82 $ 63 $ (145 ) $ 74 Other comprehensive income, before tax: Net unrealized gain on foreign exchange contracts 40 40 34 (75 ) 39 Net unrealized gain on available-for-sale securities — 1 1 (2 ) — Total other comprehensive income, before tax 40 41 35 (77 ) 39 Income tax benefit related to items of other comprehensive income — — — — — Other comprehensive income, net of tax 40 41 35 (77 ) 39 Total comprehensive income $ 114 $ 123 $ 98 $ (222 ) $ 113 Condensed Consolidating Statement of Comprehensive Income (Loss) For the nine months ended April 1, 2016 Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total (in millions) Net income $ 608 $ 630 $ 625 $ (1,255 ) $ 608 Other comprehensive income, before tax: Net unrealized gain on foreign exchange contracts 53 53 46 (100 ) 52 Net unrealized gain (loss) on available-for-sale securities (1 ) (1 ) (1 ) 3 — Total other comprehensive income, before tax 52 52 45 (97 ) 52 Income tax benefit related to items of other comprehensive income — — — — — Other comprehensive income, net of tax 52 52 45 (97 ) 52 Total comprehensive income $ 660 $ 682 $ 670 $ (1,352 ) $ 660 Condensed Consolidating Statement of Cash Flows For the nine months ended March 31, 2017 Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total (in millions) Cash flows from operating activities Net cash provided by (used in) operating activities $ (443 ) $ 617 $ 2,177 $ 147 $ 2,498 Cash flows from investing activities Purchases of property, plant and equipment — (185 ) (268 ) — (453 ) Proceeds from the sale of equipment — — 21 — 21 Purchases of investments — — (274 ) — (274 ) Proceeds from sale of investments — — 75 — 75 Proceeds from maturities of investments — — 430 — 430 Investments in Flash Ventures — — (20 ) — (20 ) Notes receivable issuances to Flash Ventures — — (480 ) — (480 ) Notes receivable proceeds from Flash Ventures — — 276 — 276 Strategic investments and other, net — — (21 ) — (21 ) Intercompany loans from (to) consolidated affiliates 995 (258 ) — (737 ) — Advances from (to) consolidated affiliates 244 (236 ) — (8 ) — Net cash provided by (used in) investing activities 1,239 (679 ) (261 ) (745 ) (446 ) Cash flows from financing activities Issuance of stock under employee stock plans 123 — — — 123 Taxes paid on vested stock awards under employee stock plans (111 ) — — — (111 ) Excess tax benefits from employee stock plans 90 — — — 90 Proceeds from acquired call option — — 61 — 61 Dividends paid to shareholders (428 ) — — — (428 ) Repayment of debt (8,692 ) (2,995 ) (492 ) — (12,179 ) Proceeds from debt 7,908 — — — 7,908 Debt issuance costs (10 ) — — — (10 ) Intercompany loans from (to) consolidated affiliates 298 (5,966 ) 4,931 737 — Change in investment in consolidated subsidiaries 296 8,673 (8,830 ) (139 ) — Net cash used in financing activities (526 ) (288 ) (4,330 ) 598 (4,546 ) Effect of exchange rate changes on cash — — (5 ) — (5 ) Net increase (decrease) in cash and cash equivalents 270 (350 ) (2,419 ) — (2,499 ) Cash and cash equivalents, beginning of year — 1,206 6,945 — 8,151 Cash and cash equivalents, end of period $ 270 $ 856 $ 4,526 $ — $ 5,652 Condensed Consolidating Statement of Cash Flows For the nine months ended April 1, 2016 Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Total (in millions) Cash flows from operating activities Net cash provided by operating activities $ 21 $ 322 $ 1,289 $ (4 ) $ 1,628 Cash flows from investing activities Purchases of property, plant and equipment — (168 ) (265 ) — (433 ) Purchases of investments — — (462 ) — (462 ) Proceeds from sale of investments — — 604 — 604 Proceeds from maturities of investments — — 303 — 303 Strategic investments and other, net — — (23 ) — (23 ) Advances from (to) consolidated affiliates 269 (269 ) — — — Net cash provided by (used in) investing activities 269 (437 ) 157 — (11 ) Cash flows from financing activities Issuance of stock under employee stock plans 64 — — — 64 Taxes paid on vested stock awards under employee stock plans (45 ) — — — (45 ) Excess tax benefits from employee stock plans (2 ) — — — (2 ) Repurchases of common stock (60 ) — — — (60 ) Dividends paid to shareholders (347 ) — — — (347 ) Repayment of debt — (109 ) (255 ) — (364 ) Change in investment in consolidated subsidiaries 100 (65 ) (39 ) 4 — Net cash used in financing activities (290 ) (174 ) (294 ) 4 (754 ) Net increase (decrease) in cash and cash equivalents — (289 ) 1,152 — 863 Cash and cash equivalents, beginning of year — 661 4,363 — 5,024 Cash and cash equivalents, end of period $ — $ 372 $ 5,515 $ — $ 5,887 |