CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Operating activities
Net income	$ 53.2us-gaap_ProfitLoss	$ 33.6us-gaap_ProfitLoss
Adjustments to reconcile net income to net cash provided by (used in) operating activities
Depreciation and amortization	50.0	46.9
Deferred income taxes	3.9	(0.7)
Stock-based compensation	3.6us-gaap_ShareBasedCompensation	2.0us-gaap_ShareBasedCompensation
Pensions and other postretirement benefits, net of contributions	(0.7)	(0.1)
Gain on disposal of property, plant and equipment, net	0	(4.0)
Changes in operating assets and liabilities
Accounts receivable	(140.6)	(194.2)
Inventories	7.2us-gaap_IncreaseDecreaseInInventories	5.2us-gaap_IncreaseDecreaseInInventories
Accounts payable and accrued expenses	52.5	25.0
Deferred revenue	(4.5)	35.7
Other assets and liabilities	(18.2)	(4.9)
Net cash provided by (used in) operating activities	6.4	(55.5)
Investing activities
Purchases of property, plant and equipment	(43.6)	(47.9)
Proceeds from sale of property, plant and equipment	0.1	7.9
Net cash used in investing activities	(43.5)	(40.0)
Financing Activities
Net short-term borrowings under credit facilities	0	29.0
Payments of long-term debt and capital lease obligations	(2.2)us-gaap_RepaymentsOfLongTermDebt	(11.5)us-gaap_RepaymentsOfLongTermDebt
Proceeds from issuance of long-term debt	1.0	3.1
Debt issuance costs	0us-gaap_PaymentsOfDebtIssuanceCosts	(0.2)us-gaap_PaymentsOfDebtIssuanceCosts
Purchase of treasury stock	(0.3)	(0.3)
Employee stock option exercises	0.4	0.6
Net cash provided by (used in) financing activities	(1.1)	20.7
Effect of exchange rate changes on cash	(5.3)	0.4
Net decrease in cash and cash equivalents	(43.5)	(74.4)
Cash and cash equivalents at beginning of period	249.2	154.0
Cash and cash equivalents at end of period	205.7	79.6
Supplemental cash flow information
Interest paid	19.3us-gaap_InterestPaidNet	14.1us-gaap_InterestPaidNet
Income taxes paid, net of refunds	$ 5.5us-gaap_IncomeTaxesPaidNet	$ 4.5us-gaap_IncomeTaxesPaidNet

The amount of pension and other (such as medical, dental and life insurance) postretirement benefit costs recognized during the period for defined benefit plans (periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss) on assets, prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments), net of contributions made to defined benefit plans during the period.

No definition available.