CONSOLIDATED BALANCE SHEETS (USD $) In Millions, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 160.1	$ 179.8
Demand deposits with affiliates of the General Partner		8.6
Accounts receivable, net	0.6	0.6
Inventories, net	13.3	17.3
Prepaid expenses and other current assets	0.3
Total current assets	174.3	206.3
Property, plant and equipment, net	104.7	87.8
Other assets	7.2	6.6
Total assets	286.2	300.7
Current liabilities:
Accounts payable and accrued expenses	21.1	18.4
Due to affiliates of the General Partner	3.0
Other current liabilities	2.6	12.0
Total current liabilities	26.7	30.4
Noncurrent liabilities	1.5	1.0
Partners' capital:
General partner's interest	27.7	33.4
Total partners' capital	258.0	269.3
Total liabilities and partners' capital	286.2	300.7
Common
Partners' capital:
Limited partners' interests	229.3	234.8
Class B Common
Partners' capital:
Limited partners' interests	$ 1.0	$ 1.1