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Long-Term Debt - Long-Term Debt (Detail) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Total long-term debt	$ 1,612	$ 1,801
Less current portion	(191)	(202)
Total long-term debt, less current portion	1,421	1,599
0.30% due 2015, floating interest rate at Libor + 0.026% [Member]
Debt Instrument [Line Items]
Funding program loans from European Investment Bank		9
0.38% due 2016, floating interest rate at Libor + 0.052% [Member]
Debt Instrument [Line Items]
Funding program loans from European Investment Bank	19	39
1.08% due 2016, floating interest rate at Libor + 0.477% [Member]
Debt Instrument [Line Items]
Funding program loans from European Investment Bank	26	52
0.71% due 2016, floating interest rate at Libor + 0.373% [Member]
Debt Instrument [Line Items]
Funding program loans from European Investment Bank	29	57
1.52% due 2020, floating interest rate at Libor + 1.199% [Member]
Debt Instrument [Line Items]
Funding program loans from European Investment Bank	63	75
1.51% due 2020, floating interest rate at Libor + 1.056% [Member]
Debt Instrument [Line Items]
Funding program loans from European Investment Bank	138	165
0.86% due 2020, floating interest rate at Euribor + 0.917% [Member]
Debt Instrument [Line Items]
Funding program loans from European Investment Bank	68	91
1.06% due 2021, floating interest rate at Libor + 0.525% [Member]
Debt Instrument [Line Items]
Funding program loans from European Investment Bank	180	210
1.22% due 2021, floating interest rate at Libor + 0.572% [Member]
Debt Instrument [Line Items]
Funding program loans from European Investment Bank	173	202
Zero Coupon due 2019 (Tranche A) [Member] | Senior Unsecured Convertible Bonds [Member]
Debt Instrument [Line Items]
Senior unsecured convertible bonds	550	537
1.0% due 2021 (Tranche B) [Member] | Senior Unsecured Convertible Bonds [Member]
Debt Instrument [Line Items]
Senior unsecured convertible bonds	354	347
0.41% (weighted average), due 2015-2023, fixed interest rate [Member]
Debt Instrument [Line Items]
Other Loans Payable	4	6
1.95% (weighted average), due 2017, fixed interest rate [Member]
Debt Instrument [Line Items]
Other Loans Payable	4	6
0.75% (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	3
6.04% (weighted average), due 2015-2017, fixed interest rate [Member]
Debt Instrument [Line Items]
Capital Lease	$ 1	$ 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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