Basis Of Presentation (Narrative) (Details) (TruePosition [Member], USD $) In Millions |
3 Months Ended |
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Mar. 31, 2011 | |
TruePosition [Member] |
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Revenue recognized | $ 538 |
Deferred costs | $ 167 |
X | ||||||||||
- Definition The amount of amortization of deferred charges applied against earnings during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Definition Amount of previously reported deferred or unearned revenue that was recognized as revenue during the period. Deferred revenue is a liability related to a revenue producing activity for which revenue has not yet been recognized. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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