Property, Plant And Equipment (Payments Due Under Operating And Capital Leases Net Of Sublease Amounts And Non-Cancellable Future Rentals) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012
Capital Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2013	$ 92
2014	40
2015	16
2016	3
2017	1
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2013	212
2014	192
2015	135
2016	111
2017	$ 94

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