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Other (Income)/Deductions - Net - Impaired Intangible Assets (Detail) - Developed Technology Rights [Member]
$ in Millions
 9 Months Ended
Oct. 01, 2017
USD ($)
 [1]
Finite-Lived Intangible Assets [Line Items]  
Finite-lived intangible assets, fair value disclosure $ 50 [2]
Impairment of finite-lived intangible assets 127
Level 1 [Member]  
Finite-Lived Intangible Assets [Line Items]  
Finite-lived intangible assets, fair value disclosure 0 [2]
Level 2 [Member]  
Finite-Lived Intangible Assets [Line Items]  
Finite-lived intangible assets, fair value disclosure 0 [2]
Level 3 [Member]  
Finite-Lived Intangible Assets [Line Items]  
Finite-lived intangible assets, fair value disclosure $ 50 [2]
[1] Reflects intangible assets written down to fair value in the third quarter of 2017. Fair value was determined using the income approach, specifically the multi-period excess earnings method, also known as the discounted cash flow method. We started with a forecast of all the expected net cash flows associated with the asset and then applied an asset-specific discount rate to arrive at a net present value amount. Some of the more significant estimates and assumptions inherent in this approach include: the amount and timing of the projected net cash flows, which includes the expected impact of competitive, legal and/or regulatory forces on the product; the discount rate, which seeks to reflect the various risks inherent in the projected cash flows; and the tax rate, which seeks to incorporate the geographic diversity of the projected cash flows.
[2] The fair value amount is presented as of the date of impairment, as these assets are not measured at fair value on a recurring basis.