CONSOLIDATED STATEMENTS OF INCOME (LOSS) - USD ($)		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenue:
Total revenue		$ 3,673,561,000	$ 3,554,075,000	$ 3,205,125,000
Costs and expenses:
Selling, general and administrative		924,163,000	963,323,000	1,003,989,000
Research and development		46,777,000	38,384,000	51,258,000
Restructuring charges and asset impairments		19,003,000	20,712,000	69,606,000
Goodwill impairment		0	198,169,000	0
Interest expense, net		96,886,000	105,753,000	110,910,000
Other components of net pension and postretirement cost (income)		1,010,000	(1,708,000)	(4,225,000)
Other expense, net		41,574,000	8,151,000	24,306,000
Total costs and expenses		3,680,976,000	3,737,444,000	3,178,393,000
(Loss) income from continuing operations before income taxes		(7,415,000)	(183,369,000)	26,732,000
(Benefit) provision for income taxes		(10,922,000)	7,122,000	(13,127,000)
Income (loss) from continuing operations		3,507,000	(190,491,000)	39,859,000
(Loss) income from discontinued operations, net of tax		(4,858,000)	10,115,000	154,460,000
Net (loss) income		$ (1,351,000)	$ (180,376,000)	$ 194,319,000
Basic earnings per share attributable to common stockholders:
Continuing operations (in dollars per share)	[1]	$ 0.02	$ (1.11)	$ 0.23
Discontinued operations (in dollars per share)	[1]	(0.03)	0.06	0.88
Net income (in dollars per share)	[1]	(0.01)	(1.05)	1.10
Diluted earnings per share attributable to common stockholders:
Continuing operations (in dollars per share)	[1]	0.02	(1.11)	0.22
Discontinued operations (in dollars per share)	[1]	(0.03)	0.06	0.87
Net income (in dollars per share)	[1]	$ (0.01)	$ (1.05)	$ 1.10
Business services
Revenue:
Total revenue		$ 2,334,674,000	$ 2,191,306,000	$ 1,710,801,000
Costs and expenses:
Cost of products and sales		2,034,477,000	1,904,078,000	1,389,569,000
Support services
Revenue:
Total revenue		460,888,000	473,292,000	506,187,000
Costs and expenses:
Cost of products and sales		149,706,000	149,988,000	162,300,000
Financing
Revenue:
Total revenue		294,418,000	341,034,000	368,090,000
Costs and expenses:
Cost of products and sales		47,059,000	48,162,000	44,648,000
Equipment sales
Revenue:
Total revenue		350,138,000	314,882,000	352,104,000
Costs and expenses:
Cost of equipment sales		251,914,000	235,153,000	244,620,000
Supplies
Revenue:
Total revenue		159,438,000	159,282,000	187,287,000
Costs and expenses:
Cost of products and sales		43,980,000	41,679,000	49,882,000
Rentals
Revenue:
Total revenue		74,005,000	74,279,000	80,656,000
Costs and expenses:
Cost of products and sales		$ 24,427,000	$ 25,600,000	$ 31,530,000

[1] The sum of the earnings per share amounts may not equal the totals due to rounding.