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Legal Actions (Details) (USD $)
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6 Months Ended |
|---|---|
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Jun. 30, 2013
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Medical Capital Corporation Litigation [Member]
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|
| Legal Actions (Textual) [Abstract] | |
| Amounts to be paid in connection with legal or regulatory matters | $ 105,000,000 |
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In re Order of Posting Litigation [Member]
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| Legal Actions (Textual) [Abstract] | |
| Amounts to be paid in connection with legal or regulatory matters | 203,000,000 |
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Liability for Contingent Litigation Losses [Member]
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| Legal Actions (Textual) [Abstract] | |
| Loss Contingency, Range of Possible Loss, Portion Not Accrued | $ 1,100,000,000 |