Debt and Credit Facilities - Lines of Credit (Detail) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Debt Disclosure [Abstract]
Used lines of credit	$ 281.0	$ 241.9	[1]
Unused lines of credit	1,034.2	1,039.9
Total available lines of credit	$ 1,315.2	$ 1,281.8

[1] As of January 1, 2016, we have adopted ASU 2015-03 and ASU 2015-15 with retrospective application. This resulted in a reclassification from other non-current assets to long-term debt, less current portion for debt issuance costs. Refer to Note 2, “Recently Issued Accounting Standards” of the notes to the condensed consolidated financial statements for further details.