XML 100 R87.htm IDEA: XBRL DOCUMENT v3.22.0.1
Income Taxes, Deferred Tax Liabilities and Assets (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Mar. 05, 2020
Deferred tax liabilities:      
Attributable to investment in OTA $ 384.2 $ 356.6 $ 439.7
Attributable to property, plant and equipment 118.0 106.4  
Attributable to investments in other entities 5.2 4.1  
Other 13.5 0.0  
Total deferred tax liabilities 520.9 467.1  
Deferred tax assets:      
Net operating loss carryovers [1] 14.3 0.1  
Temporary differences related to Texas Margin Tax 2.8 2.3  
Total deferred tax assets 17.1 2.4  
Valuation allowance 14.2 0.0  
Total deferred tax assets, net of valuation allowance 2.9 2.4  
Total net deferred tax liabilities 518.0 $ 464.7  
Net operating loss carryover subject to expiration 0.1    
Net operating loss carryover not subject to expiration $ 14.2    
[1] Of the loss amount presented as of December 31, 2021, $0.1 million expires in various years between 2022 and 2037.  The remaining $14.2 million has an indefinite carryover period.  All losses are subject to limitations on their utilization.