v3.6.0.2

Fair Value of Financial Assets and Liabilities - Summary of Estimated Fair Value and Carrying Amount of Financial Instruments Measured on a Recurring Basis (Detail) - USD ($) $ in Millions | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Liabilities: |  |  |
Short-term debt |  | $ (421) | $ (556)
Long-term debt |  | (8,766) | (8,656)
Carrying Amount [Member] | Level III [Member] |  |  |
Assets: |  |  |
Notes hedges | [1] | 258 | 241
Liabilities: |  |  |
Notes Embedded Conversion Derivative | [1] | (258) | (241)
Carrying Amount [Member] | Level II [Member] |  |  |
Assets: |  |  |
Other financial assets |  | 40 | 47
Derivative instruments-assets |  | 3 | 2
Liabilities: |  |  |
Short-term debt |  | (15) | (22)
Other long-term debt |  | (1) | (15)
Warrants |  |  | (168)
Derivative instruments-liabilities |  | (6) | (4)
Carrying Amount [Member] | Level II [Member] | Notes Payable to Banks [Member] | USD Notes [Member] |  |  |
Liabilities: |  |  |
Short-term debt |  | (406) | (534)
Long-term debt |  | (7,752) | (7,669)
Carrying Amount [Member] | Level II [Member] | Convertible Debt [Member] | 2019 Cash Convertible Senior Notes [Member] |  |  |
Liabilities: |  |  |
Long-term debt |  | (1,014) | (972)
Estimated Fair Value [Member] | Level III [Member] |  |  |
Assets: |  |  |
Notes hedges | [1] | 258 | 241
Liabilities: |  |  |
Notes Embedded Conversion Derivative | [1] | (258) | (241)
Estimated Fair Value [Member] | Level II [Member] |  |  |
Assets: |  |  |
Other financial assets |  | 40 | 47
Derivative instruments-assets |  | 3 | 2
Liabilities: |  |  |
Short-term debt |  | (15) | (22)
Other long-term debt |  | (1) | (15)
Warrants |  |  | (168)
Derivative instruments-liabilities |  | (6) | (4)
Estimated Fair Value [Member] | Level II [Member] | Notes Payable to Banks [Member] | USD Notes [Member] |  |  |
Liabilities: |  |  |
Short-term debt |  | (406) | (535)
Long-term debt |  | (8,011) | (7,723)
Estimated Fair Value [Member] | Level II [Member] | Convertible Debt [Member] | 2019 Cash Convertible Senior Notes [Member] |  |  |
Liabilities: |  |  |
Long-term debt |  | $ (1,310) | $ (1,260)
[1] | During the fourth quarter of 2016, the Notes hedges and the Notes Embedded Conversion Derivative were transferred from level 2 to level 3 of the fair value hierarchy.

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