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Long-Term Debt - Long-Term Debt (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Total long-term debt	$ 1,451	$ 1,612
Less current portion	(117)	(191)
Total long-term debt, less current portion	1,334	1,421
0.38% due 2016, floating interest rate at Libor + 0.052% [Member]
Debt Instrument [Line Items]
Funding program loans from European Investment Bank		19
1.10% due 2016, floating interest rate at Libor + 0.477% [Member]
Debt Instrument [Line Items]
Funding program loans from European Investment Bank		26
1.01% due 2016, floating interest rate at Libor + 0.373% [Member]
Debt Instrument [Line Items]
Funding program loans from European Investment Bank		29
2.08% due 2020, floating interest rate at Libor + 1.199% [Member]
Debt Instrument [Line Items]
Funding program loans from European Investment Bank	50	63
2.00% due 2020, floating interest rate at Libor + 1.056% [Member]
Debt Instrument [Line Items]
Funding program loans from European Investment Bank	110	138
0.60% due 2020, floating interest rate at Euribor + 0.917% [Member]
Debt Instrument [Line Items]
Funding program loans from European Investment Bank	53	68
1.79% due 2021, floating interest rate at Libor + 0.525% [Member]
Debt Instrument [Line Items]
Funding program loans from European Investment Bank	150	180
1.86% due 2021, floating interest rate at Libor + 0.572% [Member]
Debt Instrument [Line Items]
Funding program loans from European Investment Bank	144	173
Zero Coupon due 2019 (Tranche A) [Member] | Senior Unsecured Convertible Bonds [Member]
Debt Instrument [Line Items]
Senior unsecured convertible bonds	564	550
1.0% due 2021 (Tranche B) [Member] | Senior Unsecured Convertible Bonds [Member]
Debt Instrument [Line Items]
Senior unsecured convertible bonds	362	354
0.32% (weighted average), due 2017-2023, fixed interest rate [Member]
Debt Instrument [Line Items]
Other Loans Payable	14	4
1.95% (weighted average), due 2017, fixed interest rate [Member]
Debt Instrument [Line Items]
Other Loans Payable	1	4
0.82% (weighted average), due 2018, fixed interest rate [Member]
Debt Instrument [Line Items]
Other Loans Payable	1	1
0.87% (weighted average), due 2020, fixed interest rate [Member]
Debt Instrument [Line Items]
Other Loans Payable	2	2
20.80% (weighted average), due 2020, fixed interest rate [Member]
Debt Instrument [Line Items]
Capital Lease	$ 0	$ 1

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Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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