Supplemental Cash Flow Information (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 6.875% senior notes due 2017	Mar. 31, 2013 6.875% senior notes due 2017	Sep. 30, 2013 Senior Notes 3.00%, Exchangeable, due 2015
Supplemental Cash Flow Information
Interest paid in cash	$ 180	$ 187
U.S. income taxes paid in cash	1	2
Non-U.S. Income taxes paid in cash	96	102
Total income taxes paid in cash	97	104
Debt Instrument
Interest paid note repurchase premiums			$ 10
Interest rate, stated percentage			6.875%	6.875%	3.00%