Retirement Benefits - Reconciliation of Changes in Benefit Obligations and Fair Value of Plan Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
CHANGE IN BENEFIT OBLIGATION
Actuarial loss (gain)	$ (9,700)
CHANGE IN PLAN ASSETS
Fair value of plan assets at January 1	142,100
Fair value of plan assets at December 31	63,100	$ 142,100
Funded status at December 31	10,200
COMPONENTS ON THE CONSOLIDATED BALANCE SHEETS
Other noncurrent liabilities	(82,200)	(99,400)
Pension Benefits
CHANGE IN BENEFIT OBLIGATION
Other	0
Pension Benefits | U.S.
CHANGE IN BENEFIT OBLIGATION
Obligation at January 1	94,000	95,900
Service cost	100	100	$ 600
Interest cost	300	1,300	2,800
Plan amendments	0	200
Benefits paid	(3,300)	(4,000)
Actuarial loss (gain)	(1,900)	6,500
Currency translation	0	0
Settlements	(78,600)	(6,000)
Curtailments	0	0
Other		0
Obligation at December 31	10,600	94,000	95,900
CHANGE IN PLAN ASSETS
Fair value of plan assets at January 1	100,000	93,400
Actual return on plan assets	(500)	16,200
Employer contributions	400	400
Benefits paid	(3,300)	(4,000)
Currency translation	0	0
Settlements	(78,600)	(6,000)
Acquisition/Divestiture	0	0
Other	(1,000)	0
Fair value of plan assets at December 31	17,000	100,000	93,400
Funded status at December 31	6,400	6,000
COMPONENTS ON THE CONSOLIDATED BALANCE SHEETS
Other current assets	10,200	0
Other current assets	0	10,700
Current liabilities	(800)	(500)
Other noncurrent liabilities	(3,000)	(4,200)
Net asset (liability) at December 31	6,400	6,000
Pension Benefits | Non-U.S.
CHANGE IN BENEFIT OBLIGATION
Obligation at January 1	115,700	102,000
Service cost	2,000	2,200	1,800
Interest cost	700	1,100	1,500
Plan amendments	(500)	0
Benefits paid	(3,000)	(2,600)
Actuarial loss (gain)	(5,300)	7,300
Currency translation	(6,000)	8,900
Settlements	0	(3,800)
Curtailments	0	0
Other	700	600
Obligation at December 31	104,300	115,700	102,000
CHANGE IN PLAN ASSETS
Fair value of plan assets at January 1	42,200	39,300
Actual return on plan assets	4,200	3,600
Employer contributions	2,900	2,400
Benefits paid	(3,000)	(2,600)
Currency translation	(900)	2,700
Settlements	0	(3,800)
Acquisition/Divestiture	0	0
Other	700	600
Fair value of plan assets at December 31	46,100	42,200	39,300
Funded status at December 31	(58,200)	(73,500)
COMPONENTS ON THE CONSOLIDATED BALANCE SHEETS
Other current assets	0	0
Other current assets	100	0
Current liabilities	(1,500)	(1,500)
Other noncurrent liabilities	(56,800)	(72,000)
Net asset (liability) at December 31	(58,200)	(73,500)
Other Benefits
CHANGE IN BENEFIT OBLIGATION
Obligation at January 1	24,200	23,300
Service cost	700	600
Interest cost	400	600
Plan amendments	0	(2,900)
Benefits paid	(700)	(700)
Actuarial loss (gain)	(800)	3,200
Currency translation	0	100
Settlements	0	0
Curtailments	(200)	0
Other	0	0
Obligation at December 31	23,600	24,200	23,300
CHANGE IN PLAN ASSETS
Fair value of plan assets at January 1	0	0
Actual return on plan assets	0	0
Employer contributions	700	700
Benefits paid	(700)	(700)
Currency translation	0	0
Settlements	0	0
Acquisition/Divestiture	0	0
Other	0	0
Fair value of plan assets at December 31	0	0	$ 0
Funded status at December 31	(23,600)	(24,200)
COMPONENTS ON THE CONSOLIDATED BALANCE SHEETS
Other current assets	0	0
Other current assets	0	0
Current liabilities	(1,200)	(1,000)
Other noncurrent liabilities	(22,400)	(23,200)
Net asset (liability) at December 31	$ (23,600)	$ (24,200)