Note 15: Financial Instruments (Detail) - Derivatives in Cash Flow Hedging Relationships (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Gain (Loss) Recognized in OCI on Derivative (Effective Portion)	$ 6	$ 5	$ 6
Gain (Loss) Reclassified from Accumulated OCI Into Cost of Sales (Effective Portion)	(6)	14	10
Foreign Exchange Future [Member]
Gain (Loss) Recognized in OCI on Derivative (Effective Portion)			(2)
Gain (Loss) Reclassified from Accumulated OCI Into Cost of Sales (Effective Portion)			$ (2)