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BASIS OF PRESENTATION - Additional Information (Detail) (New TRICARE South Region Contract, USD $)
In Millions, unless otherwise specified |
3 Months Ended |
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Jun. 30, 2012
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New TRICARE South Region Contract
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| Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] | |
| TRICARE Health care cost payments | $ 515 |
| TRICARE Health care cost reimbursements | 459 |
| Difference between TRICARE health care costs payments and reimbursements | $ 56 |