CONSOLIDATED BALANCE SHEETS (USD $) In Millions, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 78.4	$ 86.9
Due from affiliates of the General Partner	25.3	29.0
Accounts receivable	1.0	1.0
Inventories, net	7.6	5.9
Prepaid expenses and other current assets	3.8	7.8
Total current assets	116.1	130.6
Property, plant and equipment, net	237.9	214.1
Other assets	7.9	5.1
Total assets	361.9	349.8
Current liabilities:
Accounts payable and accrued expenses	23.1	27.9
Due to affiliates of the General Partner	7.8	3.7
Other current liabilities	0.7	8.0
Total current liabilities	31.6	39.6
Noncurrent liabilities	1.0	1.2
Partners' capital:
General partner's interest	48.4	43.0
Total partners' capital	329.3	309.0
Total liabilities and partners' capital	361.9	349.8
Common
Partners' capital:
Limited partners' interests	279.2	264.5
Class B Common
Partners' capital:
Limited partners' interests	$ 1.7	$ 1.5