Financial Instruments - Fair Value of Outstanding Foreign Currency Derivative Contracts and Related Classification in Condensed Consolidated Balance Sheets (Detail) (Foreign exchange contract, USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Contracts qualifying for hedge accounting:
Derivative, fair value, net	$ (36.6)	$ 6.4
Designated as hedging instrument
Contracts qualifying for hedge accounting:
Other current assets	6.8	12.4
Other long-term assets	0.1	0.7
Other current liabilities	(38.5)	(6.5)
Other long-term liabilities	(6.1)	(0.1)
Derivative, fair value, net	(37.7)	6.5
Not designated as hedging instrument
Contracts qualifying for hedge accounting:
Other current assets	2.1	0.4
Other current liabilities	(1.0)	(0.5)
Derivative, fair value, net	$ 1.1	$ (0.1)

Financial Instruments - Fair Value of Outstanding Foreign Currency Derivative Contracts and Related Classification in Condensed Consolidated Balance Sheets (Detail) (Foreign exchange contract, USD $)
In Millions, unless otherwise specified

Dec. 31, 2014

Dec. 31, 2013

Contracts qualifying for hedge accounting:

Derivative, fair value, net

$ (36.6)

$ 6.4

Designated as hedging instrument

Contracts qualifying for hedge accounting:

Other current assets

6.8

12.4

Other long-term assets

0.1

0.7

Other current liabilities

(38.5)

(6.5)

Other long-term liabilities

(6.1)

(0.1)

Derivative, fair value, net

(37.7)

6.5

Not designated as hedging instrument

Contracts qualifying for hedge accounting:

Other current assets

2.1

0.4

Other current liabilities

(1.0)

(0.5)

Derivative, fair value, net

$ 1.1

$ (0.1)

- Definition

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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- Definition

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled after one year or the normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

+ References+ Details

- Definition

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

+ References+ Details

- Definition

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled after one year or the normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

+ References+ Details