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Debt and Credit Facilities - Total Debt Outstanding (Parenthetical) (Detail) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015		Dec. 31, 2014	Jan. 01, 2016	Jun. 30, 2015
Debt Instrument [Line Items]
Short-term borrowings	$ 353.1	$ 241.9	[1]
Short-term Debt, Weighted Average Interest Rate	3.50%	3.40%
Long-term Debt, Weighted Average Interest Rate	4.60%	4.60%
Unamortized discounts/issuance costs	$ 35.0	$ 36.0
Unamortized debt issuance costs					$ 36.0
U.S. Accounts Receivable Securitization Program [Member]
Debt Instrument [Line Items]
Short-term borrowings	70.0	67.0
European Accounts Receivable Securitization Program [Member]
Debt Instrument [Line Items]
Short-term borrowings	82.0	77.0
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Short-term borrowings	92.0
Line of Credit [Member]
Debt Instrument [Line Items]
Short-term borrowings	$ 109.0	$ 98.0
Term Loan A Due July 2017 [Member]
Debt Instrument [Line Items]
Debt maturity month and year, Term loan	2017-07	2017-07
Term Loan A Due July 2019 [Member]
Debt Instrument [Line Items]
Debt maturity month and year, Term loan	2019-07	2019-07
Term loan facilities, prepayment due year	2016
6.50% Senior Notes Due December 2020 [Member]
Debt Instrument [Line Items]
Debt interest rate	6.50%	6.50%
Debt maturity month and year, Senior notes	2020-12	2020-12
4.875% Senior Notes due December 2022 [Member]
Debt Instrument [Line Items]
Debt interest rate	4.875%	4.875%
Debt maturity month and year, Senior notes	2022-12	2022-12
5.25% Senior Notes Due April 2023 [Member]
Debt Instrument [Line Items]
Debt interest rate	5.25%	5.25%
Debt maturity month and year, Senior notes	2023-04	2023-04
4.50% Senior Notes due September 2023 [Member]
Debt Instrument [Line Items]
Debt interest rate	4.50%	4.50%				4.50%
Debt maturity month and year, Senior notes	2023-09	2023-09
5.125% Senior Notes due December 2024 [Member]
Debt Instrument [Line Items]
Debt interest rate	5.125%	5.125%
Debt maturity month and year, Senior notes	2024-12	2024-12
5.50% Senior Notes due September 2025 [Member]
Debt Instrument [Line Items]
Debt interest rate	5.50%	5.50%				5.50%
Debt maturity month and year, Senior notes	2025-09	2025-09
6.875% Senior Notes Due July 2033 [Member]
Debt Instrument [Line Items]
Debt interest rate	6.875%	6.875%
Debt maturity month and year, Senior notes	2033-07			2033-07
[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.

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