Summarized Financial Information of Unconsolidated Affiliate Level 4 (Details) - HAI Results of Operation (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
HAI Summarized Financial Information [Line Items]
Net sales	$ 45	$ 43	$ 144	$ 134
Gross Profit	11	10	36	30
Pre-tax income	7	7	25	20
Net Income	$ 7	$ 8	$ 24	$ 20