CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021		Dec. 31, 2020		Dec. 31, 2019
OPERATING ACTIVITIES
Net income		$ 60.9		$ 309.5		$ 46.8
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization		80.6		85.2		78.8
Employee share-based compensation expense		11.2		8.9		9.0
Financing costs amortization		8.3		4.3		3.0
Interest accretion of convertible notes discount		0.0		8.0		7.6
Unrealized (gain) loss on investment in equity securities		(3.2)		(13.1)		0.1
Realized gain on investment in equity securities		(2.6)		0.0		0.0
Unrealized foreign currency transaction (gain) loss		(1.1)		2.3		0.6
Equity in earnings of unconsolidated affiliates, net		(0.3)		0.0		0.0
Deferred income tax (benefit) expense		(7.9)		1.0		(16.2)
Gain on sale of business		0.0		(249.4)		0.0
Asset impairments		0.0		16.0		0.0
Gain on bargain purchase		0.0		(5.0)		0.0
Other non-cash operating activities		(4.8)		1.5		0.8
Changes in assets and liabilities, net of acquisitions:
Accounts receivable		(31.2)		(10.1)		23.6
Inventory		(78.1)		(34.9)		9.4
Unbilled contract revenue and other assets		(71.2)		(5.0)		(1.6)
Accounts payable and other liabilities		(10.4)		62.8		(20.9)
Customer advances and billings in excess of contract revenue		28.5		(9.3)		(7.1)
Net Cash (Used In) Provided By Operating Activities		(21.3)		172.7		133.9
INVESTING ACTIVITIES
Proceeds from sale of businesses		0.0		317.5		0.0
Acquisition of businesses, net of cash acquired		(205.1)		(51.9)		(603.9)
Investments	[1]	(103.9)		(50.8)		(3.3)
Capital expenditures		(52.7)		(37.9)		(36.2)
Proceeds from sale of assets		0.0		7.9		0.0
Government grants		0.5		0.2		0.7
Net Cash (Used In) Provided By Investing Activities		(361.2)		185.0		(642.7)
FINANCING ACTIVITIES
Borrowings on revolving credit facilities		1,361.1		215.0		235.8
Repayments on revolving credit facilities		(873.6)		(223.1)		(451.1)
Borrowings on term loan		0.0		0.0		450.0
Repayments on term loan		(103.1)		(344.1)		(2.8)
Payments for debt issuance costs		(3.0)		(1.0)		(13.6)
Issuance of shares		0.0		0.0		295.8
Payments for equity issuance costs		0.0		0.0		(9.5)
Proceeds from exercise of stock options		6.9		11.0		9.4
Common stock repurchases from share-based compensation plans		(6.4)		(1.9)		(2.0)
Common stock repurchases	[2]	0.0		(19.3)		0.0
Dividend distribution to noncontrolling interests		0.0		0.0		(0.4)
Net Cash Provided By (Used in) Financing Activities		381.9		(363.4)		511.6
Effect of exchange rate changes on cash and cash equivalents		(3.1)		11.8		(1.9)
Net increase (decrease) in cash, cash equivalents, restricted cash, and restricted cash equivalents	[3]	(3.7)		6.1		0.9
Cash, cash equivalents, restricted cash, and restricted cash equivalents at beginning of period		126.1	[3]	120.0	[3]	119.1
CASH, CASH EQUIVALENTS, RESTRICTED CASH, AND RESTRICTED CASH EQUIVALENTS AT END OF PERIOD	[3]	$ 122.4		$ 126.1		$ 120.0

[1] Non-cash investing activities of $7.0 related to the conversion of a note receivable into an investment in equity securities in Stabilis Energy, Inc. during the year ended December 31, 2019.

[2] Includes $19.3 in shares repurchased through our share repurchase program. On March 11, 2021, the share repurchase program expired with no further repurchases. Refer to Note 2, “Significant Accounting Policies” for further information.

[3] Net (decrease) increase in cash, cash equivalents, restricted cash, and restricted cash equivalents represents cash flows of consolidated operations for all periods presented. For cash flows of discontinued operations, refer to Note 3, “Discontinued Operations.”