Derivative Instruments and Hedging Activities (Details 1) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Derivative [Line Items]
Notional Amount	$ 251	$ 163
Other Non Current Assets [Member]
Derivative [Line Items]
Fair value of derivative instruments	12	8
Other Non Current Liabilities [Member]
Derivative [Line Items]
Fair value of derivative instruments	6	8
Foreign Exchange Contract [Member]
Derivative [Line Items]
Notional Amount	108	94
Foreign Exchange Contract [Member] | Other Non Current Assets [Member]
Derivative [Line Items]
Fair value of derivative instruments	8	0
Foreign Exchange Contract [Member] | Other Non Current Liabilities [Member]
Derivative [Line Items]
Fair value of derivative instruments	0	4
Foreign Forward [Member]
Derivative [Line Items]
Notional Amount	76	47
Foreign Forward [Member] | Other Non Current Assets [Member]
Derivative [Line Items]
Fair value of derivative instruments	1	0
Foreign Forward [Member] | Other Non Current Liabilities [Member]
Derivative [Line Items]
Fair value of derivative instruments	2	3
Metal Contract [Member]
Derivative [Line Items]
Notional Amount	67	22
Metal Contract [Member] | Other Non Current Assets [Member]
Derivative [Line Items]
Fair value of derivative instruments	2	8
Metal Contract [Member] | Other Non Current Liabilities [Member]
Derivative [Line Items]
Fair value of derivative instruments	$ 4	$ 1