Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

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+ Details

- Definition

Loss recognized during the period that results from the write-down of goodwill after comparing the implied fair value of reporting unit goodwill with the carrying amount of that goodwill. Goodwill is assessed at least annually for impairment.

+ References

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+ Details

Goodwill (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			9 Months Ended
	Sep. 30, 2013	Mar. 31, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Jan. 03, 2013	Dec. 31, 2012
Goodwill
Prior Period Reclassification Adjustment		$ 170
Impairment of goodwill (Note 2)	(1,100)		0	(1,100)	0
Goodwill	20,637			20,637		21,732	21,732
Consumer
Goodwill
Goodwill	10,379			10,379		10,379
Business
Goodwill
Goodwill	6,413			6,413		6,413
Wholesale
Goodwill
Goodwill	3,283			3,283		3,283
Data hosting
Goodwill
Goodwill	$ 562			$ 562		$ 1,657