New Accounting Standards - Additional Information (Detail) $ in Millions	Jun. 30, 2015 USD ($)
Adjustments for New Accounting Principle, Early Adoption [Member]
New Accounting Pronouncement, Early Adoption [Line Items]
Deferred taxes reclassification from current assets	$ 120.2
Deferred taxes reclassification from current liabilities	49.4
New Accounting Pronouncement, Early Adoption, Effect [Member]
New Accounting Pronouncement, Early Adoption [Line Items]
Reduction in assets and liabilites due to jurisdictional netting of non-current deferred tax assets and liabilities	$ 63.9