2.2.0.25truefalse147 - Disclosure - Roll-forward of Common Stock, Additional Paid-in Capital, and Retained Earnings Accounts (Detail)truefalseIn Millionsfalse1falsefalseUSDfalsefalse1/1/2011 - 3/31/2011
USD ($)
USD ($) / shares
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USD ($)
USD ($) / shares
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-Publisher SEC
-Name Regulation S-X (SX)
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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
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-Name Regulation S-X (SX)
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-Name Regulation S-X (SX)
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-Name Emerging Issues Task Force (EITF)
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-Name Statement of Financial Accounting Standard (FAS)
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-Number 210
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