Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	9 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Operating activities:
Net income (loss)	$ 51.0	$ 37.5
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Loss (income) from discontinued operations	(0.1)	0.5
Depreciation and amortization	194.1	191.3
Amortization of loan costs	6.7	4.8
Accretion of principal on notes	3.2	6.2
Acquisition related expenses	0.2	13.8
Stock compensation	5.5	6.5
Deferred income taxes	12.8	15.4
Debt extinguishment costs	1.3	38.9
Other	1.6	(0.9)
Changes in operating assets and liabilities	(186.4)	(303.1)
Net cash provided by (used in) operating activities	90.0	10.4
Investing activities:
Acquisitions and related expenses, net of cash acquired	(7.2)	(213.7)
Capital expenditures	(289.4)	(196.1)
Proceeds from sale of investments in securities	76.2	77.8
Purchases of investments in securities	(79.1)	(66.0)
Net reimbursements from restricted cash and escrow fund	0.3	(40.6)
Other investing activities	(0.4)	2.4
Net cash used in investing activities	(299.6)	(436.2)
Financing activities:
Payments of long-term debt and capital lease obligations	(19.1)	(547.7)
Proceeds from debt borrowings	300.0	452.2
Payments of debt issuance costs	(2.6)	(7.5)
Proceeds from issuance of common stock	0	67.5
Payments of IPO related costs	0	(6.9)
Payments of tender premiums on note redemption	(0.5)	(27.6)
Other financing activities	(0.9)	(3.2)
Net cash provided by (used in) financing activities	276.9	(73.2)
Net increase (decrease) in cash and cash equivalents	67.3	(499.0)
Cash and cash equivalents, beginning of period	455.5	936.6
Cash and cash equivalents, end of period	522.8	437.6
Supplemental cash flow information:
Net cash paid for interest	187.4	143.8
Net cash paid for income taxes	$ 18.9	$ 0.9