XML 30 R43.htm IDEA: XBRL DOCUMENT v2.4.1.9
Debt (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Mar. 31, 2015
Mar. 31, 2014
Jun. 30, 2014
Debt Instrument [Line Items]          
Total $ 609.8us-gaap_LongTermDebt   $ 609.8us-gaap_LongTermDebt   $ 604.3us-gaap_LongTermDebt
Less: amounts due within one year 0us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths   0us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths   0us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
Long-term debt, net of current portion 609.8us-gaap_LongTermDebtNoncurrent   609.8us-gaap_LongTermDebtNoncurrent   604.3us-gaap_LongTermDebtNoncurrent
Interest costs 7.7us-gaap_InterestCostsIncurred 8.1us-gaap_InterestCostsIncurred 22.9us-gaap_InterestCostsIncurred 24.1us-gaap_InterestCostsIncurred  
Interest costs, capitalized 0.6us-gaap_InterestCostsCapitalized 5.4us-gaap_InterestCostsCapitalized 2.0us-gaap_InterestCostsCapitalized 13.3us-gaap_InterestCostsCapitalized  
4.45% Senior Unsecured Notes due 2023          
Debt Instrument [Line Items]          
Face amount 300.0us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= crs_SeniorUnsecuredNotes4.45PercentDueMarch2023Member
  300.0us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= crs_SeniorUnsecuredNotes4.45PercentDueMarch2023Member
  300.0us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= crs_SeniorUnsecuredNotes4.45PercentDueMarch2023Member
Interest rate (as a percent) 4.45%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= crs_SeniorUnsecuredNotes4.45PercentDueMarch2023Member
  4.45%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= crs_SeniorUnsecuredNotes4.45PercentDueMarch2023Member
  4.45%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= crs_SeniorUnsecuredNotes4.45PercentDueMarch2023Member
Total 299.6us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= crs_SeniorUnsecuredNotes4.45PercentDueMarch2023Member
  299.6us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= crs_SeniorUnsecuredNotes4.45PercentDueMarch2023Member
  299.6us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= crs_SeniorUnsecuredNotes4.45PercentDueMarch2023Member
Credit Agreement          
Debt Instrument [Line Items]          
Maximum borrowing capacity 500.0us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
  500.0us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
   
Letters of credit issued 8.2us-gaap_LettersOfCreditOutstandingAmount
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
  8.2us-gaap_LettersOfCreditOutstandingAmount
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
   
Credit Agreement available for future borrowings 491.8us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
  491.8us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
   
Credit Agreement | LIBOR          
Debt Instrument [Line Items]          
Variable rate basis     LIBOR    
Interest rate margin (as a percent)     1.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
/ us-gaap_VariableRateAxis
= us-gaap_LondonInterbankOfferedRateLIBORMember
   
Credit Agreement | LIBOR | Minimum          
Debt Instrument [Line Items]          
Interest rate margin (as a percent)     0.75%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_VariableRateAxis
= us-gaap_LondonInterbankOfferedRateLIBORMember
   
Credit Agreement | LIBOR | Maximum          
Debt Instrument [Line Items]          
Interest rate margin (as a percent)     1.90%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_VariableRateAxis
= us-gaap_LondonInterbankOfferedRateLIBORMember
   
Credit Agreement | Base Rate          
Debt Instrument [Line Items]          
Variable rate basis     Base Rate    
Interest rate margin (as a percent)     0.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
/ us-gaap_VariableRateAxis
= us-gaap_BaseRateMember
   
Credit Agreement | Base Rate | Minimum          
Debt Instrument [Line Items]          
Interest rate margin (as a percent)     0.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_VariableRateAxis
= us-gaap_BaseRateMember
   
Credit Agreement | Base Rate | Maximum          
Debt Instrument [Line Items]          
Interest rate margin (as a percent)     0.90%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_VariableRateAxis
= us-gaap_BaseRateMember
   
Letters of credit          
Debt Instrument [Line Items]          
Commitment fee rate (as a percent)     0.15%us-gaap_LineOfCreditFacilityCommitmentFeePercentage
/ us-gaap_DebtInstrumentAxis
= us-gaap_LetterOfCreditMember
   
Letter of credit fees (as a percent)     1.25%crs_LetterOfCreditFeesPercentage
/ us-gaap_DebtInstrumentAxis
= us-gaap_LetterOfCreditMember
   
Required interest coverage ratio     3.50crs_InterestCoverageRatio
/ us-gaap_DebtInstrumentAxis
= us-gaap_LetterOfCreditMember
   
Letters of credit | Minimum          
Debt Instrument [Line Items]          
Commitment fee rate (as a percent)     0.075%us-gaap_LineOfCreditFacilityCommitmentFeePercentage
/ us-gaap_DebtInstrumentAxis
= us-gaap_LetterOfCreditMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
   
Letter of credit fees (as a percent)     0.75%crs_LetterOfCreditFeesPercentage
/ us-gaap_DebtInstrumentAxis
= us-gaap_LetterOfCreditMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
   
Letters of credit | Maximum          
Debt Instrument [Line Items]          
Commitment fee rate (as a percent)     0.375%us-gaap_LineOfCreditFacilityCommitmentFeePercentage
/ us-gaap_DebtInstrumentAxis
= us-gaap_LetterOfCreditMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
   
Letter of credit fees (as a percent)     1.90%crs_LetterOfCreditFeesPercentage
/ us-gaap_DebtInstrumentAxis
= us-gaap_LetterOfCreditMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
   
Required debt to capital ratio (less than 55%) 0.55us-gaap_RatioOfIndebtednessToNetCapital1
/ us-gaap_DebtInstrumentAxis
= us-gaap_LetterOfCreditMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
  0.55us-gaap_RatioOfIndebtednessToNetCapital1
/ us-gaap_DebtInstrumentAxis
= us-gaap_LetterOfCreditMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
   
Senior unsecured notes, 5.20% due July 2021          
Debt Instrument [Line Items]          
Face amount 250.0us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= crs_SeniorUnsecuredNotes5.20PercentDueJuly2021Member
  250.0us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= crs_SeniorUnsecuredNotes5.20PercentDueJuly2021Member
  250.0us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= crs_SeniorUnsecuredNotes5.20PercentDueJuly2021Member
Interest rate (as a percent) 5.20%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= crs_SeniorUnsecuredNotes5.20PercentDueJuly2021Member
  5.20%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= crs_SeniorUnsecuredNotes5.20PercentDueJuly2021Member
  5.20%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= crs_SeniorUnsecuredNotes5.20PercentDueJuly2021Member
Total 255.2us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= crs_SeniorUnsecuredNotes5.20PercentDueJuly2021Member
  255.2us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= crs_SeniorUnsecuredNotes5.20PercentDueJuly2021Member
  249.7us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= crs_SeniorUnsecuredNotes5.20PercentDueJuly2021Member
Medium-term notes, Series B 6.97% to 7.10% due April 2018 To May 2018 Member          
Debt Instrument [Line Items]          
Face amount 55.0us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= crs_MediumTermNotesSeriesB6.97PercentTo7.10PercentDueApril2018ToMay2018Member
  55.0us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= crs_MediumTermNotesSeriesB6.97PercentTo7.10PercentDueApril2018ToMay2018Member
  55.0us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= crs_MediumTermNotesSeriesB6.97PercentTo7.10PercentDueApril2018ToMay2018Member
Total $ 55.0us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= crs_MediumTermNotesSeriesB6.97PercentTo7.10PercentDueApril2018ToMay2018Member
  $ 55.0us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= crs_MediumTermNotesSeriesB6.97PercentTo7.10PercentDueApril2018ToMay2018Member
  $ 55.0us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= crs_MediumTermNotesSeriesB6.97PercentTo7.10PercentDueApril2018ToMay2018Member
Medium-term notes, Series B 6.97% to 7.10% due April 2018 To May 2018 Member | Minimum          
Debt Instrument [Line Items]          
Interest rate (as a percent) 6.97%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= crs_MediumTermNotesSeriesB6.97PercentTo7.10PercentDueApril2018ToMay2018Member
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
  6.97%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= crs_MediumTermNotesSeriesB6.97PercentTo7.10PercentDueApril2018ToMay2018Member
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
  6.97%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= crs_MediumTermNotesSeriesB6.97PercentTo7.10PercentDueApril2018ToMay2018Member
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
Medium-term notes, Series B 6.97% to 7.10% due April 2018 To May 2018 Member | Maximum          
Debt Instrument [Line Items]          
Interest rate (as a percent) 7.10%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= crs_MediumTermNotesSeriesB6.97PercentTo7.10PercentDueApril2018ToMay2018Member
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
  7.10%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= crs_MediumTermNotesSeriesB6.97PercentTo7.10PercentDueApril2018ToMay2018Member
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
  7.10%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= crs_MediumTermNotesSeriesB6.97PercentTo7.10PercentDueApril2018ToMay2018Member
/ us-gaap_RangeAxis
= us-gaap_MaximumMember