Property, Plant and Equipment, Net (Schedule of Assets Under Capital Leases) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Capital Leased Assets [Line Items]
Accumulated depreciation	$ (96)	$ (74)
Assets under capital leases, net	211	212
Buildings [Member]
Capital Leased Assets [Line Items]
Gross capital leased asset value	33	23
Machinery and Equipment [Member]
Capital Leased Assets [Line Items]
Gross capital leased asset value	$ 274	$ 263