Long-Term Debt and Credit Facilities Long-Term Debt and Credit Facilities (Details 3) (CenturyLink, Inc., Senior notes, Notes, 5.625 percent due 2025 [Member])	0 Months Ended
	Mar. 19, 2015
Debt instrument, redemption, period one
Debt Instrument, Redemption [Line Items]
Debt Instrument, redemption, description	greater of 100% of the principal amount of the Notes or the sum of the present value of the remaining scheduled payments of principal and interest on the Notes, discounted to the redemption date in the manner described in the Notes
Debt instrument, redemption, period two
Debt Instrument, Redemption [Line Items]
Debt Instrument, redemption, description	redeem the Notes at par
Debt instrument, redemption, period three
Debt Instrument, Redemption [Line Items]
Debt instrument, redemption price, percentage of principal amount (percent)	35.00%
Debt instrument, redemption price, percentage (percent)	105.625%
Debt instrument, redemption, period four
Debt Instrument, Redemption [Line Items]
Debt instrument, redemption price, percentage (percent)	101.00%