Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Cash flows from operating activities:
Net income	$ 29.0	$ 19.7
Loss from discontinued operations, net of taxes	0.0	0.0
Income from continuing operations	29.0	19.7
Adjustments to reconcile income from continuing operations to cash provided by continuing operating activities:
Depreciation and amortization	17.5	14.7
Stock-based compensation	2.5	2.6
Other	1.9	1.3
Changes in operating assets and liabilities:
Trade receivables, net and contract assets	14.7	27.8
Inventories	(2.8)	(14.1)
Accounts payable, trade and other	(36.3)	(37.4)
Advance and progress payments	(0.8)	3.8
Accrued pension and other postretirement benefits, net	(0.2)	(0.2)
Other assets and liabilities, net	(11.7)	(16.2)
Cash provided by continuing operating activities	13.8	2.0
Cash required by discontinued operating activities	0.0	(0.1)
Cash provided by operating activities	13.8	1.9
Cash flows from investing activities:
Acquisitions, net of cash acquired	0.0	(47.3)	$ (382.9)
Capital expenditures	(9.2)	(7.6)
Proceeds from disposal of assets	0.8	0.0
Cash required by investing activities	(8.4)	(54.9)
Cash flows from financing activities:
Net payments on short-term debt	(0.6)	(0.5)
Net proceeds from domestic credit facilities	38.1	61.0
Deferred acquisition payments	0.0	(3.6)
Dividends	(3.2)	(3.2)
Cash provided by financing activities	34.3	53.7
Effect of foreign exchange rate changes on cash and cash equivalents	(3.8)	0.2
Increase in cash and cash equivalents	35.9	0.9
Cash and cash equivalents, beginning of period	39.5	43.0	43.0
Cash and cash equivalents, end of period	$ 75.4	$ 43.9	$ 39.5