CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Operating Activities
Net earnings	$ 388.8	$ 410.8
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	13.0	16.5
Unrealized loss (gain) on derivatives	0.7	(9.6)
Changes in operating assets and liabilities:
Accounts receivable	(0.6)	(0.1)
Inventories	0.8	0.2
Accounts payable and accrued expenses	9.9	2.7
Due to/from affiliates of the General Partner	(14.6)	3.0
Other assets and liabilities	2.0	(0.2)
Net cash provided by operating activities	400.0	423.3
Investing Activities
Additions to property, plant and equipment, net	(77.5)	(29.5)
Changes in demand deposits with affiliates of the General Partner	5.4	8.6
Net cash used in investing activities	(72.1)	(20.9)
Financing Activities
Partnership distributions paid	(406.8)	(422.1)
Net cash used in financing activities	(406.8)	(422.1)
Decrease in cash and cash equivalents	(78.9)	(19.7)
Cash and cash equivalents at beginning of period	149.4	179.8
Cash and cash equivalents at end of period	$ 70.5	$ 160.1