Summary of Significant Accounting Policies - New Accounting Pronouncements Adopted (Details) - USD ($) $ in Millions		Dec. 31, 2015	Dec. 31, 2014
New Accounting Pronouncement, Early Adoption [Line Items]
Debt issuance costs	[1]	$ 9.5	$ 10.9
Accounting Standard Update 2015-17 [Member]
New Accounting Pronouncement, Early Adoption [Line Items]
Current deferred tax liabilities			62.2
Accounting Standard Update 2015-03 [Member]
New Accounting Pronouncement, Early Adoption [Line Items]
Debt issuance costs			$ 10.9

[1] In April 2015, the FASB issued new guidance on the presentation of debt issuance costs. This guidance requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability. The Company early adopted this new guidance on a retrospective basis in the fourth quarter of fiscal year 2015.