CONSOLIDATED BALANCE SHEETS (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 172.7	$ 179.8
Demand deposits with affiliates of the General Partner	2.3	8.6
Accounts receivable, net	0.7	0.6
Inventories, net	20.0	17.3
Prepaid expenses and other current assets	0.1
Total current assets	195.8	206.3
Property, plant and equipment, net	90.4	87.8
Other assets	6.5	6.6
Total assets	292.7	300.7
Current liabilities:
Accounts payable and accrued expenses	16.2	18.4
Other current liabilities	9.5	12.0
Total current liabilities	25.7	30.4
Noncurrent liabilities	1.4	1.0
Partners' capital:
General partner's interest	31.1	33.4
Total partners' capital	265.6	269.3
Total liabilities and partners' capital	292.7	300.7
Common
Partners' capital:
Limited partners' interests	233.4	234.8
Class B Common
Partners' capital:
Limited partners' interests	$ 1.1	$ 1.1