CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Net sales:
Other income		$ 0.2	$ 0.3	$ 0.2
Total	195.6	198.6	392.5	394.6
Cost of goods sold:
Materials, supplies and services	31.1	61.3	93.9	127.1
Gross margin	158.8	132.8	288.0	257.9
Other general and administrative expenses	0.2	0.4	1.5	1.1
Earnings from operations	154.8	128.9	279.0	249.8
Net earnings	154.8	128.9	279.0	249.8
Allocation of net earnings:
General Partner	66.8	54.5	119.9	107.7
Net earnings	154.8	128.9	279.0	249.8
Net earnings per common unit	$ 4.67	$ 3.95	$ 8.45	$ 7.55
Affiliates
Net sales:
Product sales	195.4	198.2	391.9	394.0
Other income	0.2	0.2	0.3	0.4
Cost of goods sold:
Services	5.7	4.5	10.6	9.6
Selling, general and administrative services	3.8	3.5	7.5	7.0
Class B Common
Allocation of net earnings:
Common Units	1.5	1.3	2.7	2.4
Common
Allocation of net earnings:
Common Units	$ 86.5	$ 73.1	$ 156.4	$ 139.7