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Employee Benefits (Details 3) (401(k) Plan, USD $) In Millions, unless otherwise specified | 9 Months Ended | 12 Months Ended | 3 Months Ended
--- | --- | --- | ---
Dec. 31, 2011 CenturyLink, Inc. | Dec. 31, 2013 CenturyLink, Inc. | Dec. 31, 2012 CenturyLink, Inc. | Mar. 31, 2011 Predecessor QCII
401(k) Plan |  |  |  |
Expenses related to the 401(k) Plan | $ 36 | $ 49 | $ 46 | $ 12

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- Definition The amount of the cost recognized during the period for defined contribution plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6414718&loc=d3e28014-114942 + Details
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