CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Net sales:
Other income	$ 0.3	$ 0.3
Total	177.7	224.1
Cost of goods sold:
Materials, supplies and services	64.6	46.6
Gross margin	107.5	171.9
Other general and administrative expenses	0.7	1.3
Earnings from operations	102.9	166.8
Net earnings	102.9	166.8
Allocation of net earnings:
General Partner	41.5	73.0
Net earnings	102.9	166.8
Net earnings per common Unit (in dollars per unit)	$ 3.26	$ 4.98
Affiliates
Net sales:
Product sales	177.3	223.7
Other income	0.1	0.1
Cost of goods sold:
Services provided by the affiliates of the General Partner	5.6	5.6
Selling, general and administrative services provided by the affiliates of the General Partner	3.9	3.8
Class B Common
Allocation of net earnings:
Common Units	1.0	1.6
Common
Allocation of net earnings:
Common Units	$ 60.4	$ 92.2