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Acquisitions and Divestitures - 2015 Acquisitions - Additional Information (Detail) € in Millions |  |  | 1 Months Ended | 3 Months Ended | 4 Months Ended | 9 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jul. 29, 2016 HydroelectricPowerDevelopments | Apr. 30, 2016 USD ($) | Apr. 30, 2016 USD ($) | Mar. 31, 2015 USD ($) Employees | Mar. 31, 2015 EUR (€) Employees | Sep. 30, 2016 USD ($) | Mar. 31, 2016 USD ($) | Sep. 30, 2015 USD ($) | Apr. 29, 2016 USD ($) Employees | Sep. 30, 2016 USD ($) Employees | Sep. 30, 2015 USD ($) | Dec. 31, 2015 USD ($) | Jul. 31, 2015 USD ($) | Mar. 31, 2015 EUR (€)
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain from sale of Remmele Medical business |  | $ 0 | $ 0 |  |  |  |  |  |  |  |  |  |  |
Sale generated in last annual period prior to divestiture |  |  |  |  |  | $ 5,213,000,000 |  | $ 5,573,000,000 |  | $ 15,455,000,000 | $ 17,289,000,000 |  |  |
Number of employees | Employees |  |  |  |  |  |  |  |  |  | 33 |  |  |  |
No of hydroelectric power developments held by Yadkin | HydroelectricPowerDevelopments | 4 |  |  |  |  |  |  |  |  |  |  |  |  |
Sale generated by Yadkin |  |  |  |  |  |  |  |  |  |  |  | $ 20,000,000 |  |
Goodwill |  |  |  |  |  | 5,384,000,000 |  |  |  | $ 5,384,000,000 |  | 5,401,000,000 |  |
Income tax expense |  |  |  |  |  | 147,000,000 |  | $ 100,000,000 |  | $ 329,000,000 | $ 401,000,000 |  |  |
Weighted average amortization period of intangible asset |  |  |  |  |  |  |  |  |  | 20 years |  |  |  |
Goodwill [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase (decrease) intangible assets |  | $ (44,000,000) |  |  |  |  |  |  |  |  |  |  |  |
LISI MEDICAL [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash received on sale of operations |  |  | 102,000,000 |  |  |  |  |  |  |  |  |  |  |
Sale of Remmele Medical business, net of transaction costs |  |  | $ 99,000,000 |  |  |  |  |  |  |  |  |  |  |
RTI [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale generated in last annual period prior to divestiture |  |  |  |  |  |  |  |  | $ 20,000,000 |  |  |  |  |
Number of employees | Employees |  |  |  |  |  |  |  |  | 330 |  |  |  |  |
Goodwill |  |  |  |  |  | 298,000,000 |  |  |  | $ 298,000,000 |  |  |  |
Common stock conversion transaction value |  |  |  |  |  |  |  |  |  |  |  |  | $ 870,000,000 |
Goodwill deductible for income tax purpose |  |  |  |  |  | 0 |  |  |  | 0 |  |  |  |
Yadkin [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Carrying value of net assets to be sold |  |  |  |  |  | 127,000,000 |  |  |  | 127,000,000 |  | $ 127,000,000 |  |
TITAL [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of employees | Employees |  |  |  | 650 | 650 |  |  |  |  |  |  |  |  |
Cash paid for business acquisition |  |  |  | $ 204,000,000 | € 188 |  |  |  |  |  |  |  |  |
Business acquisition transaction cost |  |  |  | 1,000,000 |  |  |  |  |  |  |  |  |  | € 1
Goodwill |  |  |  | $ 118,000,000 |  | 117,000,000 |  |  |  | 117,000,000 |  |  |  |
Income tax expense |  |  |  |  |  |  |  |  |  | 0 |  |  |  |
Other intangible assets |  |  |  |  |  | $ 0 |  |  |  | $ 0 |  |  |  |
TITAL [Member] | Goodwill [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase (decrease) intangible assets |  |  |  |  |  |  | $ 1,000,000 |  |  |  |  |  |  |

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