XML 24 R46.htm IDEA: XBRL DOCUMENT v2.4.1.9
Fair Value Measurements (Schedule Of Carrying Values And Estimated Fair Values Of Debt Instruments) (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
4.70% Senior notes due 2021 [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Debt instrument, interest rate, stated percentage 4.70%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= esv_FourPointSevenZeroPercentSeniorNotesDueTwoThousandTwentyOneMember
 
Debt instrument maturity period 2021  
6.875% Senior notes due 2020 [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Debt instrument, interest rate, stated percentage 6.875%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= esv_SixPointEightSevenFivePercentSeniorNotesDueTwoThousandTwentyMember
 
Debt instrument maturity period 2020  
3.25% Senior notes due 2016 [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Debt instrument, interest rate, stated percentage 3.25%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= esv_ThreePointTwoFivePercentSeniorNotesDueTwoThousandSixteenMember
 
Debt instrument maturity period 2016  
Four Point Five Percent Senior Notes Member [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Debt instrument, interest rate, stated percentage 4.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= esv_FourPointFivePercentSeniorNotesMemberMember
 
Debt instrument maturity period 2024  
Five Point Seven Five Percent Senior Notes [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Debt instrument, interest rate, stated percentage 5.75%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= esv_FivePointSevenFivePercentSeniorNotesMember
 
Debt instrument maturity period 2044  
8.50% Senior notes due 2019 [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Debt instrument, interest rate, stated percentage 8.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= esv_EightPointFiveZeroPercentSeniorNotesDueTwoThousandNineteenMember
 
Debt instrument maturity period 2019  
7.875% Senior notes due 2040 [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Debt instrument, interest rate, stated percentage 7.875%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= esv_SevenPointEightSevenFivePercentSeniorNotesDueTwoThousandFortyMember
 
Debt instrument maturity period 2040  
7.20% Debentures due 2027 [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Debt instrument, interest rate, stated percentage 7.20%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= esv_SevenPointTwoZeroPercentDebenturesDueTwoThousandTwentySevenMember
 
Debt instrument maturity period 2027  
4.33% MARAD bonds, including current maturities, due 2016 [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Debt instrument, interest rate, stated percentage 4.33%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= esv_FourPointThreeThreePercentNotesDueTwoThousandSixteenMember
 
Debt instrument maturity period 2016  
6.36% MARAD bonds, including current maturities, due 2015 [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Debt instrument, interest rate, stated percentage 6.36%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= esv_SixPointThreeSixPercentBondsDueTwoThousandFifteenMember
 
Debt instrument maturity period 2015  
4.65% MARAD bonds, including current maturities, due 2020 [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Debt instrument, interest rate, stated percentage 4.65%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= esv_FourPointSixFivePercentBondsDueTwoThousandTwentyMember
 
Debt instrument maturity period 2020  
Carrying Value [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Debt instrument 5,920.4us-gaap_DebtInstrumentFairValue
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
$ 4,766.4us-gaap_DebtInstrumentFairValue
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
Carrying Value [Member] | 4.70% Senior notes due 2021 [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Debt instrument 1,479.9us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_FourPointSevenZeroPercentSeniorNotesDueTwoThousandTwentyOneMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
1,477.2us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_FourPointSevenZeroPercentSeniorNotesDueTwoThousandTwentyOneMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
Carrying Value [Member] | 6.875% Senior notes due 2020 [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Debt instrument 1,008.2us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_SixPointEightSevenFivePercentSeniorNotesDueTwoThousandTwentyMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
1,024.8us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_SixPointEightSevenFivePercentSeniorNotesDueTwoThousandTwentyMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
Carrying Value [Member] | 3.25% Senior notes due 2016 [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Debt instrument 998.0us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_ThreePointTwoFivePercentSeniorNotesDueTwoThousandSixteenMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
996.5us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_ThreePointTwoFivePercentSeniorNotesDueTwoThousandSixteenMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
Carrying Value [Member] | Four Point Five Percent Senior Notes Member [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Debt instrument 624.2us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_FourPointFivePercentSeniorNotesMemberMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
0us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_FourPointFivePercentSeniorNotesMemberMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
Carrying Value [Member] | Five Point Seven Five Percent Senior Notes [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Debt instrument 622.3us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_FivePointSevenFivePercentSeniorNotesMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
0us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_FivePointSevenFivePercentSeniorNotesMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
Carrying Value [Member] | 8.50% Senior notes due 2019 [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Debt instrument 583.8us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_EightPointFiveZeroPercentSeniorNotesDueTwoThousandNineteenMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
600.5us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_EightPointFiveZeroPercentSeniorNotesDueTwoThousandNineteenMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
Carrying Value [Member] | 7.875% Senior notes due 2040 [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Debt instrument 381.2us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_SevenPointEightSevenFivePercentSeniorNotesDueTwoThousandFortyMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
382.6us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_SevenPointEightSevenFivePercentSeniorNotesDueTwoThousandFortyMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
Carrying Value [Member] | 7.20% Debentures due 2027 [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Debt instrument 149.2us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_SevenPointTwoZeroPercentDebenturesDueTwoThousandTwentySevenMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
149.1us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_SevenPointTwoZeroPercentDebenturesDueTwoThousandTwentySevenMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
Carrying Value [Member] | 4.33% MARAD bonds, including current maturities, due 2016 [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Debt instrument 46.6us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_FourPointThreeThreePercentNotesDueTwoThousandSixteenMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
78.9us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_FourPointThreeThreePercentNotesDueTwoThousandSixteenMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
Carrying Value [Member] | 6.36% MARAD bonds, including current maturities, due 2015 [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Debt instrument 0us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_SixPointThreeSixPercentBondsDueTwoThousandFifteenMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
25.3us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_SixPointThreeSixPercentBondsDueTwoThousandFifteenMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
Carrying Value [Member] | 4.65% MARAD bonds, including current maturities, due 2020 [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Debt instrument 27.0us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_FourPointSixFivePercentBondsDueTwoThousandTwentyMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
31.5us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_FourPointSixFivePercentBondsDueTwoThousandTwentyMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
Estimated Fair Value [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Debt instrument 5,973.4us-gaap_DebtInstrumentFairValue
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
5,096.3us-gaap_DebtInstrumentFairValue
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
Estimated Fair Value [Member] | 4.70% Senior notes due 2021 [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Debt instrument 1,505.3us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_FourPointSevenZeroPercentSeniorNotesDueTwoThousandTwentyOneMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
1,596.9us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_FourPointSevenZeroPercentSeniorNotesDueTwoThousandTwentyOneMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
Estimated Fair Value [Member] | 6.875% Senior notes due 2020 [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Debt instrument 1,008.5us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_SixPointEightSevenFivePercentSeniorNotesDueTwoThousandTwentyMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
1,086.7us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_SixPointEightSevenFivePercentSeniorNotesDueTwoThousandTwentyMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
Estimated Fair Value [Member] | 3.25% Senior notes due 2016 [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Debt instrument 1,018.3us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_ThreePointTwoFivePercentSeniorNotesDueTwoThousandSixteenMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
1,045.8us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_ThreePointTwoFivePercentSeniorNotesDueTwoThousandSixteenMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
Estimated Fair Value [Member] | Four Point Five Percent Senior Notes Member [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Debt instrument 602.0us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_FourPointFivePercentSeniorNotesMemberMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
0us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_FourPointFivePercentSeniorNotesMemberMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
Estimated Fair Value [Member] | Five Point Seven Five Percent Senior Notes [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Debt instrument 615.8us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_FivePointSevenFivePercentSeniorNotesMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
0us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_FivePointSevenFivePercentSeniorNotesMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
Estimated Fair Value [Member] | 8.50% Senior notes due 2019 [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Debt instrument 611.8us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_EightPointFiveZeroPercentSeniorNotesDueTwoThousandNineteenMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
635.8us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_EightPointFiveZeroPercentSeniorNotesDueTwoThousandNineteenMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
Estimated Fair Value [Member] | 7.875% Senior notes due 2040 [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Debt instrument 363.8us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_SevenPointEightSevenFivePercentSeniorNotesDueTwoThousandFortyMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
410.5us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_SevenPointEightSevenFivePercentSeniorNotesDueTwoThousandFortyMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
Estimated Fair Value [Member] | 7.20% Debentures due 2027 [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Debt instrument 171.4us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_SevenPointTwoZeroPercentDebenturesDueTwoThousandTwentySevenMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
178.6us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_SevenPointTwoZeroPercentDebenturesDueTwoThousandTwentySevenMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
Estimated Fair Value [Member] | 4.33% MARAD bonds, including current maturities, due 2016 [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Debt instrument 46.8us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_FourPointThreeThreePercentNotesDueTwoThousandSixteenMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
79.7us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_FourPointThreeThreePercentNotesDueTwoThousandSixteenMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
Estimated Fair Value [Member] | 6.36% MARAD bonds, including current maturities, due 2015 [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Debt instrument 0us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_SixPointThreeSixPercentBondsDueTwoThousandFifteenMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
27.1us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_SixPointThreeSixPercentBondsDueTwoThousandFifteenMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
Estimated Fair Value [Member] | 4.65% MARAD bonds, including current maturities, due 2020 [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Debt instrument 29.7us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_FourPointSixFivePercentBondsDueTwoThousandTwentyMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
$ 35.2us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= esv_FourPointSixFivePercentBondsDueTwoThousandTwentyMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember