Summarized Financial Information of Unconsolidated Affiliate Level 4 (Details) - HAI Results of Operation (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
HAI Summarized Financial Information [Line Items]
Net sales	$ 49	$ 48	$ 99	$ 91
Gross Profit	12	11	25	20
Pre-tax income	9	7	18	13
Net Income	$ 8	$ 7	$ 17	$ 12