Acquisition by CenturyLink (Preliminary Allocation of the Purchase Price Based on Currently Available Information) (Details) (USD $) In Millions	Apr. 02, 2011
Cash, accounts receivable and other current assets	$ 2,036
Property, plant and equipment	9,525
Capitalized software	1,702
Other non-current assets	373
Current liabilities, excluding the current portion of long-term debt	(2,424)
Current portion of long-term debt	(2,422)
Long-term debt	(10,253)
Deferred credits and other liabilities	(4,260)
Goodwill	10,005
Aggregate consideration	12,273
Identifiable Intangible Assets [Member]
Customer relationships	7,625
Other	$ 366

Business Acquisition Purchase Price Allocation Current Liabilities Excluding The Current Portion Of Long Term Debt

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Business Acquisition Purchase Price Allocation Customer Relationship

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Business Acquisition Purchase Price Allocation Other Current Assets

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Business Acquisition Purchase Price Allocation Software

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The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition.

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The amount of acquisition cost of a business combination allocated to current assets.

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The amount of acquisition cost of a business combination allocated to the current portion of long-term debt of the acquired entity.

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Amount of goodwill arising from a business combination, which is the excess of the cost of the acquired entity over the amounts assigned to assets acquired and liabilities assumed.

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The amount of acquisition cost of a business combination allocated to the noncurrent portion of the long-term debt assumed from the acquired entity.

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The amount of acquisition cost of a business combination allocated to noncurrent assets of the acquired entity, except for property plant and equipment, intangible assets, and goodwill.

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The amount of acquisition cost of a business combination allocated to other noncurrent liabilities of the acquired entity.

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The amount of acquisition cost of a business combination allocated to property, plant and equipment to be used in ongoing operations.

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