Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (USD $) | Sep. 30, 2014 | Jun. 30, 2014 |
In Millions, unless otherwise specified |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | $96,874 | | $92,164 | |
Gross | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 97,179 | | 92,319 | |
Gross | Derivatives and other | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Liabilities | 482 | | 284 | |
Gross | Mutual funds | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 623 | | 590 | |
Gross | Commercial paper | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 110 | | 189 | |
Gross | Certificates of deposit | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 544 | | 1,197 | |
Gross | U.S. government and agency securities | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 70,376 | | 67,033 | |
Gross | Foreign government bonds | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 4,491 | | 3,349 | |
Gross | Mortgage-backed securities | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 1,097 | | 1,015 | |
Gross | Corporate notes and bonds | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 7,127 | | 6,863 | |
Gross | Municipal securities | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 331 | | 332 | |
Gross | Common and preferred stock | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 11,497 | | 11,391 | |
Gross | Derivatives | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 983 | | 360 | |
Gross | Level 1 | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 79,886 | | 76,574 | |
Gross | Level 1 | Derivatives and other | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Liabilities | 3 | | 5 | |
Gross | Level 1 | Mutual funds | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 623 | | 590 | |
Gross | Level 1 | Commercial paper | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 0 | | 0 | |
Gross | Level 1 | Certificates of deposit | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 0 | | 0 | |
Gross | Level 1 | U.S. government and agency securities | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 69,739 | | 66,288 | |
Gross | Level 1 | Foreign government bonds | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 133 | | 139 | |
Gross | Level 1 | Mortgage-backed securities | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 0 | | 0 | |
Gross | Level 1 | Corporate notes and bonds | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 0 | | 0 | |
Gross | Level 1 | Municipal securities | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 0 | | 0 | |
Gross | Level 1 | Common and preferred stock | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 9,374 | | 9,552 | |
Gross | Level 1 | Derivatives | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 17 | | 5 | |
Gross | Level 2 | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 17,252 | | 15,724 | |
Gross | Level 2 | Derivatives and other | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Liabilities | 304 | | 153 | |
Gross | Level 2 | Mutual funds | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 0 | | 0 | |
Gross | Level 2 | Commercial paper | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 110 | | 189 | |
Gross | Level 2 | Certificates of deposit | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 544 | | 1,197 | |
Gross | Level 2 | U.S. government and agency securities | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 637 | | 745 | |
Gross | Level 2 | Foreign government bonds | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 4,358 | | 3,210 | |
Gross | Level 2 | Mortgage-backed securities | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 1,097 | | 1,015 | |
Gross | Level 2 | Corporate notes and bonds | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 7,127 | | 6,863 | |
Gross | Level 2 | Municipal securities | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 331 | | 332 | |
Gross | Level 2 | Common and preferred stock | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 2,109 | | 1,825 | |
Gross | Level 2 | Derivatives | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 939 | | 348 | |
Gross | Level 3 | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 41 | | 21 | |
Gross | Level 3 | Derivatives and other | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Liabilities | 175 | | 126 | |
Gross | Level 3 | Mutual funds | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 0 | | 0 | |
Gross | Level 3 | Commercial paper | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 0 | | 0 | |
Gross | Level 3 | Certificates of deposit | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 0 | | 0 | |
Gross | Level 3 | U.S. government and agency securities | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 0 | | 0 | |
Gross | Level 3 | Foreign government bonds | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 0 | | 0 | |
Gross | Level 3 | Mortgage-backed securities | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 0 | | 0 | |
Gross | Level 3 | Corporate notes and bonds | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 0 | | 0 | |
Gross | Level 3 | Municipal securities | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 0 | | 0 | |
Gross | Level 3 | Common and preferred stock | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 14 | | 14 | |
Gross | Level 3 | Derivatives | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 27 | | 7 | |
Netting | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | -305 | [1] | -155 | [1] |
Netting | Derivatives and other | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Liabilities | -305 | [1] | -155 | [1] |
Netting | Mutual funds | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 0 | [1] | 0 | [1] |
Netting | Commercial paper | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 0 | [1] | 0 | [1] |
Netting | Certificates of deposit | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 0 | [1] | 0 | [1] |
Netting | U.S. government and agency securities | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 0 | [1] | 0 | [1] |
Netting | Foreign government bonds | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 0 | [1] | 0 | [1] |
Netting | Mortgage-backed securities | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 0 | [1] | 0 | [1] |
Netting | Corporate notes and bonds | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 0 | [1] | 0 | [1] |
Netting | Municipal securities | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 0 | [1] | 0 | [1] |
Netting | Common and preferred stock | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 0 | [1] | 0 | [1] |
Netting | Derivatives | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | -305 | [1] | -155 | [1] |
Net | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 96,874 | | 92,164 | |
Net | Derivatives and other | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Liabilities | 177 | | 129 | |
Net | Mutual funds | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 623 | | 590 | |
Net | Commercial paper | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 110 | | 189 | |
Net | Certificates of deposit | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 544 | | 1,197 | |
Net | U.S. government and agency securities | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 70,376 | | 67,033 | |
Net | Foreign government bonds | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 4,491 | | 3,349 | |
Net | Mortgage-backed securities | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 1,097 | | 1,015 | |
Net | Corporate notes and bonds | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 7,127 | | 6,863 | |
Net | Municipal securities | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 331 | | 332 | |
Net | Common and preferred stock | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | 11,497 | | 11,391 | |
Net | Derivatives | ' | | ' | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | |
Assets | $678 | | $205 | |
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[1] | These amounts represent the impact of netting derivative assets and derivative liabilities when a legally enforceable master netting agreement exists and fair value adjustments related to our own credit risk and counterparty credit risk. |