Summarized Financial Information of Unconsolidated Affiliate Level 4 (Details) - HAI Results of Operation (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
HAI Summarized Financial Information [Line Items]
Net sales	$ 45	$ 50
Gross Profit	11	13
Pre-tax income	7	9
Net Income	$ 7	$ 9