Commitments and Contingencies (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2013

Dec. 31, 2012

Schedule of Environmental Loss Contingencies by Site

The following table summarizes all probable environmental remediation, indemnification and restoration liabilities, including related legal expenses, at March 31, 2013 and December 31, 2012:

	Number of Sites				Liability				Range of Reasonably Possible Costs
Site Description	March 31, 2013		December 31, 2012		March 31, 2013		December 31, 2012		Low		High
Geismar, LA		1		1	$	16	$	17	$	10	$	24
Superfund and offsite landfills— allocated share:
Less than 1%		17		22		1		1		1		2
Equal to or greater than 1%		12		12		7		6		5		14
Currently-owned		13		13		7		7		5		13
Formerly-owned:
Remediation		11		11		5		2		5		15
Monitoring only		4		4		1		1		—		1
Total		58		63	$	37	$	34	$	26	$	69

The following table summarizes all probable environmental remediation, indemnification and restoration liabilities, including related legal expenses, at December 31, 2012 and 2011:

	Number of Sites				Liability				Range of Reasonably Possible Costs
Site Description	December 31, 2012		December 31, 2011		December 31, 2012		December 31, 2011		Low		High
Geismar, LA		1		1	$	17	$	17	$	10	$	24
Superfund and offsite landfills—allocated share:
Less than 1%		22		31		1		1		1		2
Equal to or greater than 1%		12		12		6		7		5		13
Currently-owned		13		12		7		5		5		13
Formerly-owned:
Remediation		11		10		2		1		2		15
Monitoring only		4		5		1		1		—		1
Total		63		71	$	34	$	32	$	23	$	68

Long-term Purchase Commitment

The Company is required to make minimum annual payments under these contracts as follows:

Year	Minimum Annual Purchase Commitments
2013	$	278
2014		92
2015		64
2016		49
2017		48
2018 and beyond		235
Total minimum payments		766
Less: Amount representing interest		(43	)
Present value of minimum payments	$	723