XML 91 R77.htm IDEA: XBRL DOCUMENT v3.24.0.1
Income Taxes (Narrative) (Details)
€ in Millions, $ in Millions, $ in Millions
 1 Months Ended 3 Months Ended 4 Months Ended 8 Months Ended 12 Months Ended
Feb. 29, 2024
EUR (€)
Dec. 31, 2023
USD ($)
Sep. 30, 2019
USD ($)
Sep. 30, 2019
AUD ($)
Apr. 30, 2021
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2023
EUR (€)
Dec. 31, 2022
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2019
AUD ($)
Dec. 31, 2023
EUR (€)
Dec. 31, 2020
USD ($)
Investments, Owned, Federal Income Tax Note [Line Items]                          
Income from continuing operations before income taxes in the U.S. countries         $ 373.1 $ 253.4 $ 30.7   $ 39.7        
Income from continuing operations before income taxes in the non-U.S. countries         (4,800.0) 240.6 (53.5)   (185.2)        
Deferred tax assets related to net operating loss carryforwards   $ 3,308.9         3,308.9   3,028.7        
Net operating loss carryforwards   14,200.0         14,200.0            
Operating Loss Carryforwards, Limitations on Use   123.4         123.4            
Operating loss carryforwards, Not subject to expiration   13,200.0         13,200.0            
Operating loss carryforwards, Subject to expiration   1,000.0         1,000.0            
Income Tax Expense (Benefit), Discrete Item         $ 2.2 $ 14.3 $ 42.0   $ 10.3        
Consilidated effective income tax rate excluding discrete items         (12.90%) 213.90% (872.30%) (872.30%) 73.60%        
Total unrecognized tax benefits   201.4     $ 235.4 $ 235.1 $ 201.4   $ 217.6       $ 237.7
Amount of unrecognized tax benefits affecting the consolidated effective income tax rate if recognized   171.2         171.2            
Income tax benefits, inclusive of interest and penalties due to lapses in statute of limitations   77.3     0.2 17.9 77.3   4.5        
Deferred Tax Assets, Gross   881.7         881.7   88.6        
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions         0.0 4.5 3.4   1.0        
Effective Income Tax Rate Reconciliation, Switzerland Tax Reform, Amount           15.4              
Income Tax Examination, Increase (Decrease) in Liability from Prior Year         21.5 29.7     17.2        
Income Tax Benefit, Fresh Start Accounting Adjustments         19.3                
Deferred Income Taxes and Tax Credits   799.5         802.9   9.8        
Deferred Tax Expense                 1.5        
Interest limitation carryforwards   123.4         123.4   193.4        
Total provision for income taxes         16.2 36.4 (782.6)   43.1        
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount             275.0            
Deferred Tax Assets, Valuation Allowance   4,192.4         4,192.4   4,720.3        
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued   224.0         224.0   275.0        
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense         $ 13.5 $ 20.3 35.4   12.5        
Undistributed Earnings of Foreign Subsidiaries   298.2         298.2            
Amount of accrued interest and penalties included in other liabilities   52.3         52.3   87.8        
Rowan Companies [Member] | LUXEMBOURG                          
Investments, Owned, Federal Income Tax Note [Line Items]                          
Net operating loss carryforwards   2,400.0         2,400.0            
Rowan Companies [Member] | United States [Member]                          
Investments, Owned, Federal Income Tax Note [Line Items]                          
Net operating loss carryforwards   607.5         607.5            
Rowan Companies [Member] | SWITZERLAND                          
Investments, Owned, Federal Income Tax Note [Line Items]                          
Net operating loss carryforwards   88.6         88.6            
Rowan Companies [Member] | United Kingdom [Member]                          
Investments, Owned, Federal Income Tax Note [Line Items]                          
Net operating loss carryforwards   78.0         $ 78.0            
Maximum                          
Investments, Owned, Federal Income Tax Note [Line Items]                          
Deferred Tax Assets, Foreign, Expiration Date             2026 2026          
Operating loss carryforwards tax credits expiration year             2040 2040          
Interest limitation carryforwards   0.5         $ 0.5            
Other Liabilities [Member]                          
Investments, Owned, Federal Income Tax Note [Line Items]                          
Total unrecognized tax benefits   171.7         171.7   187.2        
Other Noncurrent Assets [Member]                          
Investments, Owned, Federal Income Tax Note [Line Items]                          
Total unrecognized tax benefits                 0.2        
Other Current Assets [Member]                          
Investments, Owned, Federal Income Tax Note [Line Items]                          
Total unrecognized tax benefits   29.7         29.7   $ 30.2        
Australian Taxation Office [Member] | Rowan Companies [Member]                          
Investments, Owned, Federal Income Tax Note [Line Items]                          
Unrecognized tax benefit, maximum exposure     $ 29.0             $ 69.0      
Tax Assessment Liability   18.8         18.8            
Tax Assessment       $ 42             $ 101    
Luxembourg Taxation Office                          
Investments, Owned, Federal Income Tax Note [Line Items]                          
Unrecognized tax benefit, maximum exposure             127.0            
Tax Assessment Liability   $ 66.0         $ 66.0         € 60.0  
Tax Assessment | €               € 115.0          
Luxembourg Taxation Office | Forecast [Member]                          
Investments, Owned, Federal Income Tax Note [Line Items]                          
Income Tax Credits and Adjustments | € € 60.0                        
Revision of Tax Assessment | € € 55.0