CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Operating Activities:
Net earnings	$ 104.5	$ 165.2
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	30.0	29.9
Unrealized loss (gain) on derivatives	9.7	(21.7)
Loss on disposal of property, plant and equipment	0.0	0.1
Changes in operating assets and liabilities:
Accounts receivable	0.2	0.3
Inventories	2.6	0.6
Accounts payable and accrued expenses	(2.5)	1.7
Due to/from affiliates of the General Partner	(13.5)	1.6
Other assets and liabilities	(0.3)	(2.1)
Net cash provided by operating activities	130.7	175.6
Investing Activities:
Additions to property, plant and equipment	(18.6)	(24.8)
Net cash used in investing activities	(18.6)	(24.8)
Financing Activities:
Partnership distributions paid	(90.8)	(208.5)
Net cash used in financing activities	(90.8)	(208.5)
Increase (decrease) in cash and cash equivalents	21.3	(57.7)
Cash and cash equivalents at beginning of period	39.5	106.4
Cash and cash equivalents at end of period	$ 60.8	$ 48.7