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

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Contractual interest rate for funds borrowed, under the debt agreement.

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Long-Term Debt (Details) £ in Millions, AUD in Millions, $ in Millions		1 Months Ended		6 Months Ended
	Apr. 02, 2014 USD ($)	Nov. 30, 2014 USD ($)	Aug. 31, 2012 USD ($)	Jun. 30, 2015 GBP (£)	Jun. 30, 2015 AUD	Jun. 30, 2015 GBP (£)	Jun. 30, 2015 USD ($)	May. 01, 2015 USD ($)	Apr. 30, 2015 GBP (£)	Dec. 31, 2014 USD ($)	Dec. 31, 2012 GBP (£)
Long Term Debt
Total long-term debt							$ 1,162.0			$ 1,352.6
Less: current portion							(31.2)			(36.6)
Net long-term debt							1,130.8			1,316.0
U.S. Credit Agreement Revolving Credit Line
Long Term Debt
Total long-term debt							78.0
Initial borrowing capacity	$ 450.0
Revolving loans solely for future U.S. acquisitions								$ 250.0
Maximum credit available							700.0	$ 700.0
Base rate of interest on loans	LIBOR			LIBOR
Line of credit basis spread on variable rate (as a percent)	2.00%			2.00%
Incremental interest rate for uncollateralized borrowings in excess of maximum limit (as a percent)	1.50%			1.50%
Balance outstanding under credit agreement							78.0
U.S. Credit Agreement Term Loan
Long Term Debt
Total long-term debt										88.0
U.K. Credit Agreement Revolving Credit Line and Overdraft Line Of Credit
Long Term Debt
Balance outstanding under credit agreement						£ 14.1	22.1
U.K. Credit Agreement Revolving Credit Line
Long Term Debt
Total long-term debt							17.3			121.5
Maximum credit available \| £						150.0			£ 100.0
Base rate of interest on loans				LIBOR
U.K. Credit Agreement Revolving Credit Line \| Minimum
Long Term Debt
Line of credit basis spread on variable rate (as a percent)				1.35%
U.K. Credit Agreement Revolving Credit Line \| Maximum
Long Term Debt
Line of credit basis spread on variable rate (as a percent)				3.00%
U.K. Agreement Term Loan
Long Term Debt
Total long-term debt							14.1			18.7
Maximum credit available \| £											£ 30.0
Balance outstanding under credit agreement						9.0	14.1
Repayment of term loan, quarterly installments \| £				£ 1.5
Frequency of principal repayments				Quarterly
Final payment due December 31, 2015 \| £						£ 7.5
U.K. Agreement Term Loan \| Minimum
Long Term Debt
Low end of interest rate, depending on UK subsidiaries ratios (as a percent)				2.675%
U.K. Agreement Term Loan \| Maximum
Long Term Debt
High end of interest rate, depending on UK subsidiaries ratios (as a percent)				4.325%
U.K. Credit Agreement Overdraft Line of Credit
Long Term Debt
Total long-term debt							4.8			5.7
Base rate of interest on loans				Bank of England Base Rate
Line of credit basis spread on variable rate (as a percent)				1.75%
5.375% senior subordinated notes due 2024
Long Term Debt
Total long-term debt							$ 300.0			$ 300.0
Interest rate (as a percent)		5.375%			5.375%	5.375%	5.375%			5.375%
Debt issued		$ 300.0
Change of control, redemption price as a percentage of principal		101.00%
Sale of assets, redemption price as percentage of principal		100.00%
Domestic Subsidiaries ownership guaranteeing obligations (as a percent)					100.00%	100.00%	100.00%
5.375% senior subordinated notes due 2024 \| Maximum \| Debt redemption prior to December 1, 2017
Long Term Debt
Specified equity offerings, percentage of debt which may be redeemed		40.00%
5.75% senior subordinated notes due 2022
Long Term Debt
Total long-term debt							$ 550.0			$ 550.0
Interest rate (as a percent)			5.75%		5.75%	5.75%	5.75%			5.75%
Debt issued			$ 550.0
Change of control, redemption price as a percentage of principal			101.00%
Sale of assets, redemption price as percentage of principal			100.00%
Domestic Subsidiaries ownership guaranteeing obligations (as a percent)					100.00%	100.00%	100.00%
5.75% senior subordinated notes due 2022 \| Maximum \| Debt redemption prior to October 1, 2015
Long Term Debt
Specified equity offerings, percentage of debt which may be redeemed			40.00%
U.S. Commercial Truck Capital Loan
Long Term Debt
Total long-term debt										$ 60.5
Balance outstanding under credit agreement										60.5
Australia working capital loan agreement
Long Term Debt
Maximum credit available					AUD 28.0		$ 21.6
Base rate of interest on loans				30-day Bill Rate
Line of credit basis spread on variable rate (as a percent)				2.35%
Balance outstanding under credit agreement							0.0
Mortgage facilities
Long Term Debt
Total long-term debt							169.4			169.7
Balance outstanding under credit agreement							169.4
Other Debt Securities
Long Term Debt
Total long-term debt							$ 28.4			$ 38.5