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Debt outstanding (Detail) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Debt outstanding	$ 2,397.4	$ 2,375.6
Less short-term debt and current portion of long-term debt	(100.1)	(50.4)
Total long-term debt	2,297.3	2,325.2
Debt Issuance Costs, Noncurrent, Net	1.0	1.2
Senior Secured Term Loan B [Member]
Debt Instrument [Line Items]
Debt outstanding	$ 1,975.3	$ 1,984.6
Debt Instrument, Maturity Date	Apr. 09, 2023
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate	3.73%	3.52%
Debt Instrument, Unamortized Discount (Premium), Net	$ 6.9	$ 7.6
Debt Issuance Costs, Noncurrent, Net	4.1	4.4
Senior Secured Term Loan A [Member]
Debt Instrument [Line Items]
Debt outstanding	$ 365.8	$ 375.7
Debt Instrument, Maturity Date	Jun. 30, 2020
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate	3.23%	2.77%
Debt Instrument, Unamortized Discount (Premium), Net	$ 0.6	$ 0.7
Debt Issuance Costs, Noncurrent, Net	0.2	0.2
Senior Secured Revolving Line of Credit
Debt Instrument [Line Items]
Debt outstanding	45.0	0.0
Other notes payable
Debt Instrument [Line Items]
Debt outstanding	10.9	14.2
Capital lease obligations
Debt Instrument [Line Items]
Debt outstanding	$ 0.4	$ 1.1

X

- Definition

Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
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Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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Amount, after accumulated amortization, of debt discount (premium).

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

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a rate subject to change from time to time.

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