Acquisitions - Additional Information (Detail) - USD ($)		12 Months Ended
Mar. 17, 2015	Sep. 30, 2015
Business Acquisition [Line Items]
Restructuring charges		$ 271,000,000
Care Fusion Corporation
Business Acquisition [Line Items]
Percentage of interest acquired	100.00%
Cash consideration per share (USD per share)	$ 49.00
Conversion factor	0.0777
Acquisition-date fair value of consideration transferred net of in cash acquired	$ 12,538,000,000
Product recall accrual	36,000,000
Portion of goodwill currently expected to be deductible for tax purposes	$ 0
Business combination interest and financing costs		107,000,000
Acquisition-related costs		59,000,000
Business combination, integration related costs		95,000,000
Restructuring charges		271,000,000
Business combination, pro forma information, revenue of acquiree since acquisition date,		2,000,000,000
Business combination, pro forma information, loss of acquiree since acquisition date		$ 242,000,000
Care Fusion Corporation \| Customer relationships
Business Acquisition [Line Items]
Risk-adjusted discount rate	11.00%
Weighted average useful life	15 years
Care Fusion Corporation \| Developed technology
Business Acquisition [Line Items]
Risk-adjusted discount rate	11.00%
Weighted average useful life	12 years
Care Fusion Corporation \| Trademarks
Business Acquisition [Line Items]
Risk-adjusted discount rate	11.00%
Weighted average useful life	22 years
Care Fusion Corporation \| In Process Research and Development
Business Acquisition [Line Items]
Risk-adjusted discount rate	12.00%
Acquired in-process research and development	$ 110,000,000
Care Fusion Corporation \| In Process Research and Development \| Minimum
Business Acquisition [Line Items]
Technological and commercial risk	80.00%
Care Fusion Corporation \| In Process Research and Development \| Maximum
Business Acquisition [Line Items]
Technological and commercial risk	85.00%

Cash to be paid/paid, per share acquired, to acquiree's shareholders.

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Number of acquirer's shares to be received/received by acquiree's shareholders per each share of acquiree.

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Business Combination Interest And Financing Costs

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The probability of success, based upon the applicable technological and commercial risk, assumed relative to in-process research and development assets acquired.

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Product Recall Accrual

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Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.

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This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Costs incurred to effect a business combination which have been expensed during the period. Such costs could include business integration costs, systems integration and conversion costs, and severance and other employee-related costs.

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This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

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This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

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Amount of assets, excluding financial assets and goodwill, that lack physical substance, having a projected indefinite period of benefit, acquired at the acquisition date.

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Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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