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Summary of Allocation of Purchase Price to Net Assets of optionsXpress (Detail) (OptionsXpress Holdings, Inc., USD $)
In Millions, unless otherwise specified |
Dec. 31, 2012
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Sep. 01, 2011
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OptionsXpress Holdings, Inc.
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| Business Acquisition [Line Items] | |||||
| Fair value of common stock issued | $ 710 | $ 710 | |||
| Fair value of equity awards assumed | 4 | 4 | |||
| Total consideration paid | 714 | [1] | 714 | ||
| Fair value of net assets acquired | 203 | 203 | |||
| Acquisition-related goodwill | $ 511 | $ 511 | |||
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| X | ||||||||||
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- Definition
The fair value of assets acquired and liabilities assumed, net, in the acquisition of optionsXpress. This amount does not include goodwill arising from the business combination. No definition available.
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| X | ||||||||||
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- Definition
The acquisition-date fair value of the equity interests of the acquirer, including the number of instruments or interests issued or issuable in consideration for the business combination. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Fair value of noncash consideration given by the acquirer to acquire the entity. Does not include cash paid, the fair value of debt and securities issued and liabilities incurred to acquire the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Amount of goodwill arising from a business combination, which is the excess of the cost of the acquired entity over the amounts assigned to assets acquired and liabilities assumed. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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