Consolidated Statements Of Partners' Capital (USD $) In Millions, unless otherwise specified	Total	General Partner's Interests	Common Units Units	Class B Common Units Units
Partners' capital at Dec. 31, 2011	$ 269.3us-gaap_PartnersCapital	$ 33.4	$ 234.8	$ 1.1
Increase (Decrease) in Partners' Capital
Common Units			315.6	5.5
General Partner		239.7
Net earnings	560.8us-gaap_IncomeLossAttributableToParent
Distributions	(558.3)	(240.8)	(312.1)	(5.4)
Partners' capital at Dec. 31, 2012	271.8us-gaap_PartnersCapital	32.3	238.3	1.2
Increase (Decrease) in Partners' Capital
Common Units			291.8	4.9
General Partner		205.7
Net earnings	502.4us-gaap_IncomeLossAttributableToParent
Distributions	(465.2)	(195.0)	(265.6)	(4.6)
Partners' capital at Dec. 31, 2013	309.0us-gaap_PartnersCapital	43.0	264.5	1.5
Increase (Decrease) in Partners' Capital
Common Units			223.3	3.6
General Partner		143.1
Net earnings	370.0us-gaap_IncomeLossAttributableToParent
Distributions	(304.1)	(116.1)	(185.1)	(2.9)
Partners' capital at Dec. 31, 2014	$ 374.9us-gaap_PartnersCapital	$ 70.0	$ 302.7	$ 2.2

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

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

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