Stock Repurchase Program, Increase In Authorized Amount

No definition available.

Name:	akam_StockRepurchaseProgramIncreaseInAuthorizedAmount
Namespace Prefix:	akam_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

Subsequent Event (Details) (USD $) In Millions, unless otherwise specified	0 Months Ended	1 Months Ended
	Apr. 26, 2012	Aug. 31, 2011	Apr. 30, 2011	Apr. 30, 2010
Subsequent Event [Line Items]
Increase in stock repurchase authorized amount	$ 150.0	$ 250.0	$ 150.0	$ 150.0
Repurchase of Equity [Member]
Subsequent Event [Line Items]
Increase in stock repurchase authorized amount	$ 150.0