Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Operating Activities
Net income	$ 190.2	$ 172.4
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	81.2	70.8
Impairment charges	0.7	0.0
Loss on sale of assets	(1.6)	0.9
Deferred income tax provision	1.8	0.1
Stock-based compensation expense	14.9	17.8
Pension and other postretirement expense	5.8	1.6
Pension contributions and other postretirement benefit payments	8.9	8.8
Operating Lease, Expense	18.7	0.0
Operating Lease, Payments	(17.7)	0.0
Changes in operating assets and liabilities:
Accounts receivable	(35.9)	(86.4)
Increase (Decrease) in Unbilled Receivables	(36.6)	(27.8)
Inventories	16.6	(79.9)
Accounts payable, trade	(13.4)	8.4
Other accrued expenses	45.1	2.4
Income taxes	(0.6)	3.8
Other, net	11.8	11.7
Net Cash Provided by Operating Activities	209.9	57.8
Investing Activities
Capital expenditures	39.2	39.6
Acquisitions, net of cash received	83.0	0.0
Other	(2.4)	(3.6)
Net Cash Used by Investing Activities	(119.8)	(36.0)
Financing Activities
Cash dividends paid to shareholders	(42.6)	(42.7)
Purchase of treasury shares	(23.6)	(49.6)
Net proceeds from common share activity	8.9	10.6
Payments Related to Tax Withholding for Share-based Compensation	8.1	5.0
Proceeds from Accounts Receivable Securitization	25.0	52.1
Repayments of Accounts Receivable Securitization	0.0	18.6
Proceeds from Issuance of Long-term Debt	292.0	130.0
Payments on long-term debt	(310.4)	(94.2)
Payments of Financing Costs	1.9	0.0
Short-term debt activity, net	3.8	26.3
Proceeds from (Payments for) Other Financing Activities	0.0	(1.0)
Net Cash Used by Financing Activities	(56.9)	7.9
Effect of exchange rate changes on cash	1.1	(8.5)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	34.3	21.2
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 167.4	$ 146.6