Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Face (par) amount of debt instrument at time of issuance.

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Amount, after accumulated amortization, of debt discount.

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Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Fixed interest rate related to the interest rate derivative.

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Floor rate on an interest rate derivative such as an interest rate floor or collar. If market rates falls below the floor rate, a payment or receipt is triggered on the contract.

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Amount of unrealized gain (loss) related to the fair value of interest rate derivatives designated as fair value hedging instruments, as offset by the gain (loss) on the hedged item to the extent that the fair value hedge is determined to be effective.

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Fair value as of the balance sheet date of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as liabilities.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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Debt instrument covenant leverage ratio.

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Debt instrument issuance at premium price percentage.

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Additional proceeds from the amended line of credit facility during the year.

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Percentage of excess cash flows committed to debt payments.

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Redemption Premium and Accrued Interest

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Long-Term Debt (Narrative) (Details) - USD ($) $ in Millions					3 Months Ended
	Jul. 22, 2016	Apr. 14, 2016	Jan. 15, 2016	May 06, 2015	Sep. 30, 2016	Jun. 30, 2016	Sep. 30, 2015	Aug. 13, 2012
Debt Instrument [Line Items]
Redemption of debt							$ 4.1
Loss on extinguishment of debt						$ 11.4
Secured debt ratio					4.50
Debt issuance costs					$ 52.1	53.8
Accumulated amortization					38.0	35.8
Interest expense associated with the amortization of debt issuance costs					2.2		2.5
Fair value of interest rate swaps					2.3	$ 3.0
Interest Rate Swap [Member]
Debt Instrument [Line Items]
Derivative, notional amount								$ 750.0
Derivative, fixed interest rate								1.67%
Derivative, floor rate								1.25%
Change in fair value of interest rate swap					$ (0.7)		$ 0.4
Secured Debt [Member] \| Revolver [Member]
Debt Instrument [Line Items]
Line of credit facility maximum borrowing capacity				$ 450.0
Weighted average interest rate (including margins)					3.60%	3.40%
Outstanding letters of credit					$ 0.0	$ 0.0
Remaining borrowing capacity					$ 442.1
Percentage of excess revolver committed to debt payments					35.00%
Secured debt ratio					5.25
Secured Debt [Member] \| Letter Of Credit [Member]
Debt Instrument [Line Items]
Line of credit facility maximum borrowing capacity				$ 50.0
Unused commitment, percentage				0.25%
Outstanding letters of credit					$ 7.9
Term Loan Facility due 2021 [Member]
Debt Instrument [Line Items]
Payment towards principal				$ 5.1
Percentage of excess cash flows committed to debt payments				50.00%
Discount on debt					$ 18.0	$ 19.0
Weighted average interest rate (including margins)					3.75%	3.90%
Redemption of debt		$ 196.0
Loss on extinguishment of debt		2.1
Incremental Term Loan [Member]
Debt Instrument [Line Items]
Line of credit facility increase to borrowing capacity			$ 400.0
Priced percent of additional line of credit			99.00%
Discount on debt			$ 4.8
Credit Agreement
Debt Instrument [Line Items]
Debt issuance costs					$ 90.1
Minimum \| Secured Debt [Member] \| Revolver [Member]
Debt Instrument [Line Items]
Unused commitment, percentage				0.25%
Maximum
Debt Instrument [Line Items]
Total indebtedness ratio					6.00
Maximum \| Secured Debt [Member] \| Revolver [Member]
Debt Instrument [Line Items]
Unused commitment, percentage				0.375%
6.00% Senior Notes due 2023 [Member]
Debt Instrument [Line Items]
Interest rate of debt redeemed					6.00%
6.375% Senior Notes due 2025 [Member]
Debt Instrument [Line Items]
Interest rate of debt redeemed					6.375%
6.375% Senior Notes due 2025 [Member] \| Unsecured Debt [Member]
Debt Instrument [Line Items]
Discount on debt					$ 15.3	$ 15.6
6.375% New Senior Notes due 2025 [Member] \| Unsecured Debt [Member]
Debt Instrument [Line Items]
Discount on debt		15.9
Debt instrument, face amount		$ 550.0
Priced percent of new debt		97.10%
10.125% Senior Notes due 2020 [Member] \| Unsecured Debt [Member]
Debt Instrument [Line Items]
Redemption of debt		$ 325.6
Interest rate of debt redeemed		10.125%
Redemption premium and accrued interest included in redemption amount		$ 20.3
LIBOR \| Term Loan Facility due 2021 [Member]
Debt Instrument [Line Items]
Interest rate decrease				0.25%
Spread on interest rate				(2.75%)	2.75%
LIBOR \| Incremental Term Loan [Member]
Debt Instrument [Line Items]
Interest rate decrease	0.75%
Spread on interest rate	2.75%		3.50%
LIBOR \| Minimum \| Secured Debt [Member] \| Letter Of Credit [Member]
Debt Instrument [Line Items]
Spread on interest rate				2.00%
LIBOR \| Minimum \| Term Loan Facility due 2021 [Member]
Debt Instrument [Line Items]
Spread on interest rate				1.00%
LIBOR \| Minimum \| Incremental Term Loan [Member]
Debt Instrument [Line Items]
Spread on interest rate	1.00%		1.00%
LIBOR \| Maximum \| Secured Debt [Member] \| Letter Of Credit [Member]
Debt Instrument [Line Items]
Spread on interest rate				3.00%