Supplemental Cash Flow Information (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended		3 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Jun. 30, 2011 Senior Notes 6.75%, due 2014
Supplemental Cash Flow Information
Interest paid in cash	$ 187	$ 233
U.S. Income taxes paid in cash	2
Non-U.S. Income taxes paid in cash	102	91
Total income taxes paid in cash	104	91
Cash received for deferred recognition of gain	42
Debt Instrument
Interest rate, stated percentage			6.75%
Interest paid note repurchase premiums			$ 16