CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Millions, except Per Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Net sales:
Product sales		$ 136.0		$ 421.3
Other income	0.1		0.3	0.4
Total	203.3	136.0	597.9	421.7
Cost of goods sold:
Materials, supplies and services	65.5	91.9	192.6	260.9
Gross margin	132.9	39.2	390.8	148.2
Other general and administrative expenses	0.8	0.3	1.9	1.1
Earnings from operations	128.4	35.4	378.2	136.1
Interest expense		0.3		0.4
Interest income		(0.1)		(0.1)
Net earnings	128.4	35.2	378.2	135.8
Allocation of net earnings:
General Partner	54.8	9.0	162.5	34.6
Net earnings	128.4	35.2	378.2	135.8
Net earnings per common unit (in dollars per unit)	$ 3.91	$ 1.40	$ 11.46	$ 5.40
Class B Common
Allocation of net earnings:
Common Units	1.2	0.3	3.6	1.3
Common
Allocation of net earnings:
Common Units	72.4	25.9	212.1	99.9
Affiliates
Net sales:
Product sales	203.1		597.1
Other income	0.1		0.5
Cost of goods sold:
Services	4.9	4.9	14.5	12.6
Selling, general and administrative services	$ 3.7	$ 3.5	$ 10.7	$ 11.0