Retirement and Post-Retirement Benefit Plans (Details 6) - USD ($) $ in Millions | 12 Months Ended |
Oct. 31, 2015 | Oct. 31, 2014 |
U.S. Defined Benefit Plans | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | $ 11,979 | $ 10,866 |
Actual return on plan assets: | | |
Fair value - end of year | $ 11,077 | $ 11,979 |
Plan assets target allocation (as a percent) | 100.00% | |
Plan asset actual allocations (as a percent) | 100.00% | 100.00% |
Future benefits payable for the retirement and post-retirement plans | | |
2,016 | $ 879 | |
2,017 | 636 | |
2,018 | 645 | |
2,019 | 670 | |
2,020 | 705 | |
Next five fiscal years to October 31, 2025 | 3,785 | |
U.S. Defined Benefit Plans | Fair Value Measured Using Level 3 | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | 1,557 | $ 1,365 |
Actual return on plan assets: | | |
Relating to assets still held at the reporting date | (28) | 103 |
Relating to assets sold during the period | 144 | 169 |
Purchases, sales, and settlements (net) | (212) | (80) |
Fair value - end of year | $ 1,461 | $ 1,557 |
U.S. Defined Benefit Plans | Marketable equity securities | | |
Actual return on plan assets: | | |
Plan assets target allocation (as a percent) | 53.50% | |
Plan asset actual allocations (as a percent) | 48.90% | 47.70% |
U.S. Defined Benefit Plans | U.S, equity securities | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | $ 1,787 | |
Actual return on plan assets: | | |
Fair value - end of year | 1,880 | $ 1,787 |
U.S. Defined Benefit Plans | Non-U.S, equity securities | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | 1,268 | |
Actual return on plan assets: | | |
Fair value - end of year | $ 1,335 | $ 1,268 |
U.S. Defined Benefit Plans | Debt securities: | | |
Actual return on plan assets: | | |
Plan assets target allocation (as a percent) | 46.10% | |
Plan asset actual allocations (as a percent) | 47.50% | 49.20% |
U.S. Defined Benefit Plans | Corporate debt securities | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | $ 3,290 | |
Actual return on plan assets: | | |
Fair value - end of year | 3,269 | $ 3,290 |
U.S. Defined Benefit Plans | Corporate debt securities | Fair Value Measured Using Level 3 | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | 7 | |
Actual return on plan assets: | | |
Purchases, sales, and settlements (net) | 24 | 7 |
Fair value - end of year | 31 | 7 |
U.S. Defined Benefit Plans | Government debt securities | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | 2,204 | |
Actual return on plan assets: | | |
Fair value - end of year | 1,756 | 2,204 |
U.S. Defined Benefit Plans | Private Equity, Alternative Investments | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | 1,284 | |
Actual return on plan assets: | | |
Fair value - end of year | $ 1,170 | $ 1,284 |
Plan asset actual allocations (as a percent) | 16.40% | 15.80% |
U.S. Defined Benefit Plans | Private Equity, Alternative Investments | Fair Value Measured Using Level 3 | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | $ 1,284 | $ 1,250 |
Actual return on plan assets: | | |
Relating to assets still held at the reporting date | (25) | 92 |
Relating to assets sold during the period | 145 | 169 |
Purchases, sales, and settlements (net) | (234) | (227) |
Fair value - end of year | 1,170 | 1,284 |
U.S. Defined Benefit Plans | Hybrids, Alternative Investments | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | 3 | |
Actual return on plan assets: | | |
Fair value - end of year | | 3 |
U.S. Defined Benefit Plans | Hybrids, Alternative Investments | Fair Value Measured Using Level 3 | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | 3 | 2 |
Actual return on plan assets: | | |
Relating to assets still held at the reporting date | | 1 |
Relating to assets sold during the period | (1) | |
Purchases, sales, and settlements (net) | (2) | |
Fair value - end of year | | 3 |
U.S. Defined Benefit Plans | Hedge Funds, Alternative Investments | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | 609 | |
Actual return on plan assets: | | |
Fair value - end of year | 648 | 609 |
U.S. Defined Benefit Plans | Hedge Funds, Alternative Investments | Fair Value Measured Using Level 3 | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | 263 | 113 |
Actual return on plan assets: | | |
Relating to assets still held at the reporting date | (3) | 10 |
Purchases, sales, and settlements (net) | | 140 |
Fair value - end of year | $ 260 | $ 263 |
U.S. Defined Benefit Plans | Equity securities in public companies | | |
Actual return on plan assets: | | |
Plan asset actual allocations (as a percent) | 34.20% | 31.30% |
U.S. Defined Benefit Plans | Real Estate Funds | | |
Actual return on plan assets: | | |
Plan asset actual allocations (as a percent) | (1.70%) | 0.60% |
U.S. Defined Benefit Plans | Cash and Cash Equivalents | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | $ 227 | |
Actual return on plan assets: | | |
Fair value - end of year | $ 241 | $ 227 |
Plan assets target allocation (as a percent) | 0.40% | |
Plan asset actual allocations (as a percent) | 3.60% | 3.10% |
U.S. Defined Benefit Plans | Other | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | $ 71 | |
Actual return on plan assets: | | |
Fair value - end of year | (192) | $ 71 |
U.S. non-qualified plan participants | | |
Future Contributions and Funding Policy | | |
Expected contribution to defined benefit plans in fiscal 2015 | 36 | |
Non-U.S. Defined Benefit Plans | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | 12,472 | 11,307 |
Actual return on plan assets: | | |
Transfer from (to) Hewlett Packard Enterprise | (442) | 41 |
Fair value - end of year | $ 853 | $ 12,472 |
Plan assets target allocation (as a percent) | 100.00% | |
Plan asset actual allocations (as a percent) | 100.00% | 100.00% |
Future Contributions and Funding Policy | | |
Expected contribution to defined benefit plans in fiscal 2015 | $ 18 | |
Future benefits payable for the retirement and post-retirement plans | | |
2,016 | 22 | |
2,017 | 24 | |
2,018 | 26 | |
2,019 | 28 | |
2,020 | 29 | |
Next five fiscal years to October 31, 2025 | 188 | |
Non-U.S. Defined Benefit Plans | Fair Value Measured Using Level 3 | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | 714 | $ 502 |
Actual return on plan assets: | | |
Relating to assets still held at the reporting date | (33) | 33 |
Relating to assets sold during the period | (20) | 1 |
Purchases, sales, and settlements (net) | 12 | 113 |
Transfers in and/or out of Level 3 | (197) | 24 |
Fair value - end of year | $ 34 | $ 714 |
Non-U.S. Defined Benefit Plans | Marketable equity securities | | |
Actual return on plan assets: | | |
Plan assets target allocation (as a percent) | 51.40% | |
Plan asset actual allocations (as a percent) | 51.90% | 64.50% |
Non-U.S. Defined Benefit Plans | U.S, equity securities | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | $ 2,016 | |
Actual return on plan assets: | | |
Fair value - end of year | 135 | $ 2,016 |
Non-U.S. Defined Benefit Plans | Non-U.S, equity securities | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | 3,610 | |
Actual return on plan assets: | | |
Transfer from (to) Hewlett Packard Enterprise | (81) | |
Fair value - end of year | 236 | 3,610 |
Non-U.S. Defined Benefit Plans | Non-U.S, equity securities | Fair Value Measured Using Level 3 | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | 80 | 77 |
Actual return on plan assets: | | |
Relating to assets still held at the reporting date | (5) | 3 |
Relating to assets sold during the period | 0 | |
Transfers in and/or out of Level 3 | 21 | |
Fair value - end of year | $ 15 | $ 80 |
Non-U.S. Defined Benefit Plans | Debt securities: | | |
Actual return on plan assets: | | |
Plan assets target allocation (as a percent) | 48.00% | |
Plan asset actual allocations (as a percent) | 44.20% | 32.70% |
Non-U.S. Defined Benefit Plans | Corporate debt securities | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | $ 2,349 | |
Actual return on plan assets: | | |
Fair value - end of year | 282 | $ 2,349 |
Non-U.S. Defined Benefit Plans | Government debt securities | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | 1,615 | |
Actual return on plan assets: | | |
Fair value - end of year | 85 | 1,615 |
Non-U.S. Defined Benefit Plans | Private Equity, Alternative Investments | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | 25 | |
Actual return on plan assets: | | |
Transfer from (to) Hewlett Packard Enterprise | (19) | |
Fair value - end of year | $ 2 | $ 25 |
Plan asset actual allocations (as a percent) | 1.30% | 10.20% |
Non-U.S. Defined Benefit Plans | Private Equity, Alternative Investments | Fair Value Measured Using Level 3 | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | $ 23 | $ 30 |
Actual return on plan assets: | | |
Relating to assets still held at the reporting date | | 2 |
Relating to assets sold during the period | 2 | 2 |
Purchases, sales, and settlements (net) | 3 | (11) |
Transfers in and/or out of Level 3 | (7) | |
Fair value - end of year | 2 | 23 |
Non-U.S. Defined Benefit Plans | Hybrids, Alternative Investments | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | 1,245 | |
Actual return on plan assets: | | |
Transfer from (to) Hewlett Packard Enterprise | (25) | |
Fair value - end of year | 9 | 1,245 |
Non-U.S. Defined Benefit Plans | Hybrids, Alternative Investments | Fair Value Measured Using Level 3 | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | 43 | |
Actual return on plan assets: | | |
Relating to assets still held at the reporting date | (3) | |
Relating to assets sold during the period | (22) | |
Purchases, sales, and settlements (net) | | 43 |
Transfers in and/or out of Level 3 | 9 | |
Fair value - end of year | 2 | 43 |
Non-U.S. Defined Benefit Plans | Hedge Funds, Alternative Investments | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | 311 | |
Actual return on plan assets: | | |
Transfer from (to) Hewlett Packard Enterprise | (202) | 6 |
Fair value - end of year | 13 | 311 |
Non-U.S. Defined Benefit Plans | Hedge Funds, Alternative Investments | Fair Value Measured Using Level 3 | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | 285 | 194 |
Actual return on plan assets: | | |
Relating to assets still held at the reporting date | (7) | 14 |
Relating to assets sold during the period | | (1) |
Purchases, sales, and settlements (net) | 12 | 72 |
Transfers in and/or out of Level 3 | (84) | |
Fair value - end of year | $ 4 | $ 285 |
Non-U.S. Defined Benefit Plans | Equity securities in public companies | | |
Actual return on plan assets: | | |
Plan asset actual allocations (as a percent) | 45.00% | 47.60% |
Non-U.S. Defined Benefit Plans | Real Estate Funds | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | $ 704 | |
Actual return on plan assets: | | |
Transfer from (to) Hewlett Packard Enterprise | (23) | |
Fair value - end of year | $ 33 | $ 704 |
Plan asset actual allocations (as a percent) | 5.60% | 6.70% |
Non-U.S. Defined Benefit Plans | Real Estate Funds | Fair Value Measured Using Level 3 | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | $ 207 | $ 159 |
Actual return on plan assets: | | |
Relating to assets still held at the reporting date | (10) | 21 |
Purchases, sales, and settlements (net) | (1) | 11 |
Transfers in and/or out of Level 3 | (173) | 16 |
Fair value - end of year | | 207 |
Non-U.S. Defined Benefit Plans | Insurance Group Annuity Contracts | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | 118 | |
Actual return on plan assets: | | |
Transfer from (to) Hewlett Packard Enterprise | (58) | 35 |
Fair value - end of year | 2 | 118 |
Non-U.S. Defined Benefit Plans | Insurance Group Annuity Contracts | Fair Value Measured Using Level 3 | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | 74 | 40 |
Actual return on plan assets: | | |
Relating to assets still held at the reporting date | (10) | (7) |
Purchases, sales, and settlements (net) | (2) | (2) |
Transfers in and/or out of Level 3 | | 8 |
Fair value - end of year | 4 | 74 |
Non-U.S. Defined Benefit Plans | Cash and Cash Equivalents | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | 349 | |
Actual return on plan assets: | | |
Fair value - end of year | $ 33 | $ 349 |
Plan assets target allocation (as a percent) | 0.60% | |
Plan asset actual allocations (as a percent) | 3.90% | 2.80% |
Non-U.S. Defined Benefit Plans | Other | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | $ 130 | |
Actual return on plan assets: | | |
Transfer from (to) Hewlett Packard Enterprise | (34) | |
Fair value - end of year | 15 | $ 130 |
Non-U.S. Defined Benefit Plans | Other | Fair Value Measured Using Level 3 | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | 2 | 2 |
Actual return on plan assets: | | |
Relating to assets still held at the reporting date | 2 | |
Transfers in and/or out of Level 3 | 37 | |
Fair value - end of year | 7 | 2 |
Post-Retirement Benefit Plans | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | 458 | 396 |
Actual return on plan assets: | | |
Fair value - end of year | $ 434 | $ 458 |
Plan assets target allocation (as a percent) | 100.00% | |
Plan asset actual allocations (as a percent) | 100.00% | 100.00% |
Future Contributions and Funding Policy | | |
Expected contribution to defined benefit plans in fiscal 2015 | $ 43 | |
Future benefits payable for the retirement and post-retirement plans | | |
2,016 | 82 | |
2,017 | 71 | |
2,018 | 58 | |
2,019 | 54 | |
2,020 | 51 | |
Next five fiscal years to October 31, 2025 | 197 | |
Post-Retirement Benefit Plans | Fair Value Measured Using Level 3 | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | 272 | $ 235 |
Actual return on plan assets: | | |
Relating to assets still held at the reporting date | (2) | 51 |
Relating to assets sold during the period | 46 | 21 |
Purchases, sales, and settlements (net) | (63) | (35) |
Fair value - end of year | $ 253 | $ 272 |
Post-Retirement Benefit Plans | Marketable equity securities | | |
Actual return on plan assets: | | |
Plan assets target allocation (as a percent) | 66.10% | |
Plan asset actual allocations (as a percent) | 68.00% | 68.80% |
Post-Retirement Benefit Plans | U.S, equity securities | | |
Actual return on plan assets: | | |
Fair value - end of year | $ 1 | |
Post-Retirement Benefit Plans | Debt securities: | | |
Actual return on plan assets: | | |
Plan assets target allocation (as a percent) | 32.00% | |
Plan asset actual allocations (as a percent) | 27.30% | 27.50% |
Post-Retirement Benefit Plans | Corporate debt securities | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | $ 20 | |
Actual return on plan assets: | | |
Fair value - end of year | 28 | $ 20 |
Post-Retirement Benefit Plans | Government debt securities | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | 22 | |
Actual return on plan assets: | | |
Fair value - end of year | 39 | 22 |
Post-Retirement Benefit Plans | Private Equity, Alternative Investments | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | 271 | |
Actual return on plan assets: | | |
Fair value - end of year | $ 253 | $ 271 |
Plan asset actual allocations (as a percent) | 58.30% | 58.60% |
Post-Retirement Benefit Plans | Private Equity, Alternative Investments | Fair Value Measured Using Level 3 | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | $ 271 | $ 234 |
Actual return on plan assets: | | |
Relating to assets still held at the reporting date | (2) | 51 |
Relating to assets sold during the period | 46 | 21 |
Purchases, sales, and settlements (net) | (62) | (35) |
Fair value - end of year | 253 | 271 |
Post-Retirement Benefit Plans | Hybrids, Alternative Investments | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | 1 | |
Actual return on plan assets: | | |
Fair value - end of year | | 1 |
Post-Retirement Benefit Plans | Hybrids, Alternative Investments | Fair Value Measured Using Level 3 | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | 1 | 1 |
Actual return on plan assets: | | |
Purchases, sales, and settlements (net) | $ (1) | |
Fair value - end of year | | $ 1 |
Post-Retirement Benefit Plans | Equity securities in public companies | | |
Actual return on plan assets: | | |
Plan asset actual allocations (as a percent) | 11.60% | 10.20% |
Post-Retirement Benefit Plans | Real Estate Funds | | |
Actual return on plan assets: | | |
Plan asset actual allocations (as a percent) | (1.90%) | |
Post-Retirement Benefit Plans | Cash and Cash Equivalents | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | $ 6 | |
Actual return on plan assets: | | |
Fair value - end of year | $ 7 | $ 6 |
Plan assets target allocation (as a percent) | 1.90% | |
Plan asset actual allocations (as a percent) | 4.70% | 3.70% |
Post-Retirement Benefit Plans | Other | | |
Changes in fair value measurements of Level 3 investments | | |
Fair value - beginning of year | $ (4) | |
Actual return on plan assets: | | |
Fair value - end of year | $ (8) | $ (4) |