Supplemental Cash Flow Information (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Supplemental Cash Flow Information
Interest paid in cash	$ 123	$ 148
U.S. Income taxes paid in cash	1	1
Non-U.S. Income taxes paid in cash	71	63
Total income taxes paid in cash	72	64
Senior Notes 6.75%, due 2014
Debt Instrument
Interest paid note repurchase premiums		$ 16