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Derivative Instruments (Tables)
 3 Months Ended
Mar. 31, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Gains And Losses On Derivatives Designated As Cash Flow Hedges
Gains and losses, net of tax, on derivatives designated as cash flow hedges included in our Condensed Consolidated Statements of Operations and comprehensive loss for the three month periods ended March 31, 2021 and 2020 were as follows (in millions):

Loss Recognized in
Other Comprehensive Loss
 ("OCI") on Derivatives
(Effective Portion)
Gain Reclassified from ("AOCI") into Income (Effective Portion)(1)
2021202020212020
Foreign currency forward contracts(2)
$— $(12.9)$(5.6)$(.1)
Total$— $(12.9)$(5.6)$(.1)

(1)Changes in the fair value of cash flow hedges are recorded in AOCI.  Amounts recorded in AOCI associated with cash flow hedges are subsequently reclassified into contract drilling, depreciation or interest expense as earnings are affected by the underlying hedged forecasted transaction.
(2)During the three months ended March 31, 2021, $5.6 million of gains were reclassified from AOCI into impairment expense in our Condensed Consolidated Statement of Operations in connection with the impairment of certain rigs. During the three months ended March 31, 2020, $0.9 million of losses were reclassified from AOCI into contract drilling expense and $1.0 million of gains were reclassified from AOCI into depreciation expense in our Condensed Consolidated Statement of Operations.