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Contingencies and Commitments (Tables)
3 Months Ended
Sep. 30, 2012
Contingencies And Commitments Tables [Abstract]  
Contingent Contractual Obligations
Contingent Contractual Obligations Amount Number of Agreements Maximum Exposure Range for Each Agreement
  (in millions)   (in millions)
Guarantees $ 550  19 <$1 - $222
Letters of credit under the senior secured credit facility   5  9 <$1 - $2
Cash collateralized letters of credit   234  8 <$1 - $209
Total $ 789  36  

Contingent Contractual Obligations Amount Number of Agreements Maximum Exposure Range for Each Agreement
  (in millions)   (in millions)
Guarantees $ 550  19 <$1 - $222
Letters of credit under the senior secured credit facility   5  9 <$1 - $2
Cash collateralized letters of credit   234  8 <$1 - $209
Total $ 789  36