v3.24.1.1.u2
IMMATERIAL FINANCIAL RESTATEMENT AND RECLASSIFICATIONS TO PRIOR PERIOD FINANCIAL STATEMENTS - Statements of Operations (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Mar. 31, 2024
Sep. 30, 2023
Jun. 30, 2023
Mar. 31, 2023
Jun. 30, 2023
Sep. 30, 2023
Dec. 31, 2023
Dec. 31, 2022
Error Corrections and Prior Period Adjustments Restatement [Line Items]                
Revenues $ 662.1 $ 713.8 $ 725.1 $ 693.9 $ 1,419.0 $ 2,132.8 $ 2,842.5 $ 2,837.0
Costs and expenses:                
Direct costs, exclusive of depreciation and amortization 554.2 563.8 568.7 541.5 1,110.2 1,674.0 2,251.9 2,112.6
Selling, general and administrative expenses, exclusive of depreciation and amortization 120.1 106.8 97.8 116.8 214.6 321.4 448.1 416.1
Depreciation and amortization 21.9 22.8 23.4 20.9 44.3 67.1 89.3 85.5
Long-lived and goodwill asset impairments       0.0   0.0 0.0 9.8
Restructuring and other charges 3.3 10.1 3.6 0.6 4.2 14.3 21.2 25.9
Total costs and expenses 699.5 703.5 693.5 679.8 1,373.3 2,076.8 2,810.5 2,649.9
Operating income (loss) (37.4) 10.3 31.6 14.1 45.7 56.0 32.0 187.1
Other income (expense):                
Interest income (expense) (34.3) (34.6) (0.7) 0.1 (0.6) (35.2) (69.7) (0.2)
Foreign exchange gain (loss) (5.3) (1.2) 5.2 (5.2) 0.0 (1.2) 0.3 (2.0)
Other, net 1.3 3.6 0.5 0.5 1.0 4.6 6.9 2.1
Income (loss) from continuing operations before income taxes (75.7) (21.9) 36.6 9.5 46.1 24.2 (30.5) 187.0
Provision for income taxes 4.1 (5.8) 11.6 1.5 13.1 7.3 1.2 41.1
Income (loss) from continuing operations $ (79.8) $ (16.1) $ 25.0 $ 8.0 $ 33.0 $ 16.9 $ (31.7) $ 145.9
Earnings (loss) per common share                
Basic earnings (loss) per share continuing operations (in dollars per share) $ (0.89) $ (0.18) $ 0.28 $ 0.09 $ 0.37 $ 0.19 $ (0.36) $ 1.64
Basic earnings (loss) per share discontinued operations (in dollars per share) (0.24) 0.02 0.07 0.05 0.12 0.14 0.07 0.45
Basic earnings (loss) per share (in dollars per share) (1.13) (0.16) 0.35 0.14 0.49 0.33 (0.29) 2.09
Diluted earnings (loss) per share continuing operations (in dollars per share) (0.89) (0.18) 0.28 0.09 0.37 0.19 (0.36) 1.64
Diluted earnings (loss) per share discontinued operations (in dollars per share) (0.24) 0.02 0.07 0.05 0.12 0.14 0.07 0.45
Diluted earnings (loss) per share (in dollars per share) $ (1.13) $ (0.16) $ 0.35 $ 0.14 $ 0.49 $ 0.33 $ (0.29) $ 2.09
As Previously Reported                
Error Corrections and Prior Period Adjustments Restatement [Line Items]                
Revenues   $ 776.4 $ 793.0 $ 764.2 $ 1,557.2 $ 2,333.6 $ 3,109.0 $ 3,096.1
Costs and expenses:                
Direct costs, exclusive of depreciation and amortization   647.3 649.4 636.2 1,285.6 1,932.9 2,588.6 2,447.4
Selling, general and administrative expenses, exclusive of depreciation and amortization   78.9 80.8 78.0 158.8 237.7 336.6 279.8
Depreciation and amortization   24.6 25.1 22.8 47.9 72.5 96.4 92.7
Long-lived and goodwill asset impairments       0.0   0.0 0.0 9.8
Restructuring and other charges   11.6 3.9 1.2 5.1 16.7 24.3 30.5
Total costs and expenses   762.4 759.2 738.2 1,497.4 2,259.8 3,045.9 2,860.2
Operating income (loss)   14.0 33.8 26.0 59.8 73.8 63.1 235.9
Other income (expense):                
Interest income (expense)   (34.6) (0.7) 0.0 (0.7) (35.3) (69.8) (0.2)
Foreign exchange gain (loss)   (0.9) 5.4 (5.5) (0.1) (1.0) 0.9 (0.9)
Other, net   3.6 0.4 0.6 1.0 4.6 6.9 2.2
Income (loss) from continuing operations before income taxes   (17.9) 38.9 21.1 60.0 42.1 1.1 237.0
Provision for income taxes   (4.8) 10.6 3.7 14.3 9.5 4.5 44.1
Income (loss) from continuing operations   $ (13.1) $ 28.3 $ 17.4 $ 45.7 $ 32.6 $ (3.4) $ 192.9
Earnings (loss) per common share                
Basic earnings (loss) per share continuing operations (in dollars per share)   $ (0.15) $ 0.32 $ 0.20 $ 0.51 $ 0.37 $ (0.04) $ 2.17
Basic earnings (loss) per share discontinued operations (in dollars per share)   0 0 0 0 0 0 0
Basic earnings (loss) per share (in dollars per share)   (0.15) 0.32 0.20 0.51 0.37 (0.04) 2.17
Diluted earnings (loss) per share continuing operations (in dollars per share)   (0.15) 0.32 0.20 0.51 0.37 (0.04) 2.17
Diluted earnings (loss) per share discontinued operations (in dollars per share)   0 0 0 0 0 0 0
Diluted earnings (loss) per share (in dollars per share)   $ (0.15) $ 0.32 $ 0.20 $ 0.51 $ 0.37 $ (0.04) $ 2.17
Adjustments                
Error Corrections and Prior Period Adjustments Restatement [Line Items]                
Revenues   $ 0.8 $ (3.1) $ (0.5) $ (3.6) $ (2.8) $ (3.2) $ 0.0
Costs and expenses:                
Direct costs, exclusive of depreciation and amortization   1.4 (1.2) 0.0 (1.2) 0.2 0.9 5.0
Selling, general and administrative expenses, exclusive of depreciation and amortization   (0.1) (5.4) 5.2 (0.2) (0.3) 3.6 2.2
Depreciation and amortization   0.4 0.4 0.3 0.7 1.1 1.6 0.9
Long-lived and goodwill asset impairments       0.0   0.0 13.4 0.0
Restructuring and other charges   0.0 0.0 0.0 0.0 0.0 0.0 0.0
Total costs and expenses   1.7 (6.2) 5.5 (0.7) 1.0 19.5 8.1
Operating income (loss)   (0.9) 3.1 (6.0) (2.9) (3.8) (22.7) (8.1)
Other income (expense):                
Interest income (expense)   0.0 0.0 0.0 0.0 0.0 0.0 0.0
Foreign exchange gain (loss)   (0.2) (0.2) 0.0 (0.2) (0.4) (0.8) (0.7)
Other, net   0.0 0.0 0.0 0.0 0.0 0.0 0.0
Income (loss) from continuing operations before income taxes   (1.1) 2.9 (6.0) (3.1) (4.2) (23.5) (8.8)
Provision for income taxes   (0.2) 0.4 (1.1) (0.7) (0.9) (1.7) (2.1)
Income (loss) from continuing operations   (0.9) 2.5 (4.9) (2.4) (3.3) (21.8) (6.7)
As Restated                
Error Corrections and Prior Period Adjustments Restatement [Line Items]                
Revenues   777.2 789.9 763.7 1,553.6 2,330.8 3,105.8 3,096.1
Costs and expenses:                
Direct costs, exclusive of depreciation and amortization   648.7 648.2 636.2 1,284.4 1,933.1 2,589.5 2,452.4
Selling, general and administrative expenses, exclusive of depreciation and amortization   78.8 75.4 83.2 158.6 237.4 340.2 282.0
Depreciation and amortization   25.0 25.5 23.1 48.6 73.6 98.0 93.6
Long-lived and goodwill asset impairments             13.4 9.8
Restructuring and other charges   11.6 3.9 1.2 5.1 16.7 24.3 30.5
Total costs and expenses   764.1 753.0 743.7 1,496.7 2,260.8 3,065.4 2,868.3
Operating income (loss)   13.1 36.9 20.0 56.9 70.0 40.4 227.8
Other income (expense):                
Interest income (expense)   (34.6) (0.7) 0.0 (0.7) (35.3) (69.8) (0.2)
Foreign exchange gain (loss)   (1.1) 5.2 (5.5) (0.3) (1.4) 0.1 (1.6)
Other, net   3.6 0.4 0.6 1.0 4.6 6.9 2.2
Income (loss) from continuing operations before income taxes   (19.0) 41.8 15.1 56.9 37.9 (22.4) 228.2
Provision for income taxes   (5.0) 11.0 2.6 13.6 8.6 2.8 42.0
Income (loss) from continuing operations   $ (14.0) $ 30.8 $ 12.5 $ 43.3 $ 29.3 $ (25.2) $ 186.2
Earnings (loss) per common share                
Basic earnings (loss) per share continuing operations (in dollars per share)   $ (0.16) $ 0.35 $ 0.14 $ 0.49 $ 0.33 $ (0.29) $ 2.09
Basic earnings (loss) per share discontinued operations (in dollars per share)   0 0 0 0 0 0 0
Basic earnings (loss) per share (in dollars per share)   (0.16) 0.35 0.14 0.49 0.33 (0.29) 2.09
Diluted earnings (loss) per share continuing operations (in dollars per share)   (0.16) 0.35 0.14 0.49 0.33 (0.29) 2.09
Diluted earnings (loss) per share discontinued operations (in dollars per share)   0 0 0 0 0 0 0
Diluted earnings (loss) per share (in dollars per share)   $ (0.16) $ 0.35 $ 0.14 $ 0.49 $ 0.33 $ (0.29) $ 2.09
Reclassifications                
Costs and expenses:                
Direct costs, exclusive of depreciation and amortization       $ (45.3)        
Selling, general and administrative expenses, exclusive of depreciation and amortization       45.3        
Reclassifications | Discontinued Operations Reclassifications                
Error Corrections and Prior Period Adjustments Restatement [Line Items]                
Revenues   $ (63.4) $ (64.8) (69.8) $ (134.6) $ (198.0) $ (263.3) $ (259.1)
Costs and expenses:                
Direct costs, exclusive of depreciation and amortization   (44.8) (44.3) (46.1) (90.4) (135.2) (176.8) (155.5)
Selling, general and administrative expenses, exclusive of depreciation and amortization   (12.1) (12.8) (15.0) (27.8) (39.9) (52.9) (50.2)
Depreciation and amortization   (2.2) (2.1) (2.2) (4.3) (6.5) (8.7) (8.1)
Long-lived and goodwill asset impairments             (13.4) 0.0
Restructuring and other charges   (1.5) (0.3) (0.6) (0.9) (2.4) (3.1) (4.6)
Total costs and expenses   (60.6) (59.5) (63.9) (123.4) (184.0) (254.9) (218.4)
Operating income (loss)   (2.8) (5.3) (5.9) (11.2) (14.0) (8.4) (40.7)
Other income (expense):                
Interest income (expense)   0.0 0.0 0.0 0.0 0.0 0.0 0.0
Foreign exchange gain (loss)   (0.1) 0.0 0.3 0.3 0.2 0.2 (0.4)
Other, net   0.0 0.1 0.0 0.1 0.1 0.1 (0.1)
Income (loss) from continuing operations before income taxes   (2.9) (5.2) (5.6) (10.8) (13.7) (8.1) (41.2)
Provision for income taxes   (0.8) 0.6 (1.1) (0.5) (1.3) (1.6) (0.9)
Income (loss) from continuing operations   (2.1) (5.8) (4.5) (10.3) (12.4) (6.5) (40.3)
Reclassifications | Change in Basis of Presentation                
Error Corrections and Prior Period Adjustments Restatement [Line Items]                
Revenues   0.0 0.0 0.0 0.0 0.0 0.0 0.0
Costs and expenses:                
Direct costs, exclusive of depreciation and amortization   (40.1) (35.2) (48.6) (83.8) (123.9) (160.8) (184.3)
Selling, general and administrative expenses, exclusive of depreciation and amortization   40.1 35.2 48.6 83.8 123.9 160.8 184.3
Depreciation and amortization   0.0 0.0 0.0 0.0 0.0 0.0 0.0
Long-lived and goodwill asset impairments             0.0 0.0
Restructuring and other charges   0.0 0.0 0.0 0.0 0.0 0.0 0.0
Total costs and expenses   0.0 0.0 0.0 0.0 0.0 0.0 0.0
Operating income (loss)   0.0 0.0 0.0 0.0 0.0 0.0 0.0
Other income (expense):                
Interest income (expense)   0.0 0.0 0.1 0.1 0.1 0.1 0.0
Foreign exchange gain (loss)   0.0 0.0 0.0 0.0 0.0 0.0 0.0
Other, net   0.0 0.0 (0.1) (0.1) (0.1) (0.1) 0.0
Income (loss) from continuing operations before income taxes   0.0 0.0 0.0 0.0 0.0 0.0 0.0
Provision for income taxes   0.0 0.0 0.0 0.0 0.0 0.0 0.0
Income (loss) from continuing operations   $ 0.0 $ 0.0 $ 0.0 $ 0.0 $ 0.0 $ 0.0 $ 0.0