CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Net sales:
Other income	$ 0.8	$ 0.1	$ 1.0	$ 0.3
Total	181.1	203.3	573.6	597.9
Cost of goods sold:
Materials, supplies and services	39.6	65.5	133.5	192.6
Gross margin	136.0	132.9	424.0	390.8
Other general and administrative expenses	0.4	0.8	1.9	1.9
Earnings from operations	131.8	128.4	410.8	378.2
Net earnings	131.8	128.4	410.8	378.2
Allocation of net earnings:
General Partner	56.6	54.8	176.5	162.5
Net earnings	131.8	128.4	410.8	378.2
Net earnings per common unit	$ 4.00	$ 3.91	$ 12.45	$ 11.46
Affiliates
Net sales:
Product sales	180.2	203.1	572.1	597.1
Other income	0.1	0.1	0.5	0.5
Cost of goods sold:
Services	5.5	4.9	16.1	14.5
Selling, general and administrative services	3.8	3.7	11.3	10.7
Class B Common
Allocation of net earnings:
Common Units	1.3	1.2	4.0	3.6
Common
Allocation of net earnings:
Common Units	$ 73.9	$ 72.4	$ 230.3	$ 212.1