Quarterly Financial Data (Unaudited) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended	12 Months Ended
Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Quarterly Financial Data (Unaudited)
Net sales	$ 168.3	$ 128.4	$ 215.4	$ 224.1	$ 206.5	$ 181.1	$ 195.6	$ 196.9	$ 736.2	$ 780.1	$ 798.9
Gross margin	117.4	76.8	153.7	171.9	153.8	136.0	158.8	129.2	519.8	577.8	524.5
Net earnings	$ 113.6	$ 72.7	$ 149.3	$ 166.8	$ 150.0	$ 131.8	$ 154.8	$ 124.2	$ 502.4	$ 560.8	$ 508.0
Net earnings per Common Unit (in dollars per unit)	$ 3.73	$ 2.52	$ 4.54	$ 4.98	$ 4.61	$ 4.00	$ 4.67	$ 3.78	$ 15.77	$ 17.06	$ 15.33

Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

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- Definition

The portion of profit or loss for the period which is attributable to the parent.

+ References

+ Details

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- Definition

Per unit of ownership amount after tax of income (loss) available to outstanding limited partnership (LP) unit-holder.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187171-122770

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 4

-Section F

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- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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