Company's Liability Under Deferred Prosecution Agreement, Percentage of Company's Adjusted EBITDA

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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- Definition

Amount of loss contingency liability.

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Amount of loss contingency liability expected to be resolved within one year or the normal operating cycle, if longer.

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- Definition

Amount of damages paid to the plaintiff in the legal matter.

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The estimated maximum amount of possible loss from the contingency.

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The fair value, as of the date of each statement of financial position presented, of securities that are restricted as collateral under letter of credit agreements, and that are reclassified and separately reported in the statement of financial position because the transferee has the right by contract or custom to sell or re-pledge them.

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Contingencies - Litigation and Other Matters (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	1 Months Ended
	Dec. 31, 2014	Jan. 30, 2015	Sep. 30, 2014
Loss Contingencies [Line Items]
Company's liability under Deferred Prosecution Agreement (percent)	4.00%
Maximum liability under the DPA and other settlement agreements	$ 48.0
Portion of liability under DPA that has been paid as of balance sheet date	22.7us-gaap_LossContingencyDamagesPaidValue
Additional liability recorded as of end of period	2.7
Accrued amounts for litigation and other contingent liabilities	15.6		13.4
Performance Bonds
Loss Contingencies [Line Items]
Cash collateral in restricted accounts securing letters of credit	219.2
Letter of Credit
Loss Contingencies [Line Items]
Letters of credit secured using cash collateral	38.6		39.1
Subsequent Event
Loss Contingencies [Line Items]
Portion of liability under DPA that has been paid as of balance sheet date		$ 2.1