Major Classes of Assets and Liabilities of Local Exchange and Related Landline Activities in California, Florida and Texas (Detail) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Assets held for sale:
Total current assets held for sale	$ 893	$ 552
Goodwill (Note 3)	1,328
Total non-current assets held for sale	9,580
Liabilities related to assets held for sale:
Total current liabilities related to assets held for sale	572
Long-term debt	594
Total non-current liabilities related to assets held for sale	943
Acquisitions
Assets held for sale:
Accounts receivable	496
Prepaid expense and other	60
Total current assets held for sale	556
Plant, property and equipment, net	8,198
Goodwill (Note 3)	1,328
Other assets	54
Total non-current assets held for sale	9,580
Total assets held for sale	10,136
Liabilities related to assets held for sale:
Accounts payable and accrued liabilities	277
Other current liabilities	295
Total current liabilities related to assets held for sale	572
Long-term debt	594
Employee benefit obligations	215
Other liabilities	134
Total non-current liabilities related to assets held for sale	943
Total liabilities related to assets held for sale	$ 1,515

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