Accounts Receivable (Details) (USD $)	9 Months Ended	12 Months Ended			0 Months Ended	3 Months Ended
	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2012	Apr. 02, 2011	Apr. 02, 2012 Predecessor	Mar. 31, 2011 Predecessor	Apr. 02, 2011 Acquisition of QCII, amounts attributable to Qwest CenturyLink, Inc.	Mar. 31, 2011 Acquisition of QCII, amounts attributable to Qwest CenturyLink, Inc.
Accounts receivable
Trade and purchased receivables		$ 697,000,000	$ 661,000,000
Earned and unbilled receivables		73,000,000	82,000,000
Other Receivables, Gross, Current		11,000,000	12,000,000
Total accounts receivable		781,000,000	755,000,000
Accounts receivable, allowance (in dollars)	(42,000,000)	(43,000,000)	(46,000,000)
Accounts receivable, less allowance		738,000,000	709,000,000
Changes in allowance for doubtful accounts
Balance at the beginning of the period				0		48,000,000	0	47,000,000
Charged to expense-net	44,000,000	65,000,000	74,000,000			17,000,000
Deductions	(2,000,000)	(68,000,000)	(70,000,000)			(18,000,000)
Fair value adjustment					(47,000,000)
Balance at the end of the period		$ 43,000,000		$ 0		$ 47,000,000	$ 0	$ 47,000,000