Supplemental Financial Information (Tables)

12 Months Ended

Dec. 31, 2012

Balance Sheet Related Disclosures [Abstract]

Schedule of Supplemental Balance Sheet Disclosure [Text Block]

	December 31,
	2012			2011
	(in millions)
Accounts and notes receivable, net
Trade	$	3,239		$	3,099
Unbilled trade and other	602			326
Less allowance for doubtful accounts	(183		)	(219		)
	$	3,658		$	3,206
Prepaid expenses and other current assets
Prepaid expenses	$	370		$	321
Deferred charges and other	330			170
	$	700		$	491
Accounts payable(1)
Trade	$	2,521		$	1,887
Accrued interconnection costs	393			369
Capital expenditures and other	573			92
	$	3,487		$	2,348
Accrued expenses and other current liabilities
Deferred revenues	$	1,540		$	1,770
Accrued taxes	303			334
Payroll and related	512			418
Accrued interest	328			331
Accrued capital expenditures	1,149			147
Other	1,176			1,143
	$	5,008		$	4,143
Other liabilities
Deferred rental income-communications towers	$	700		$	740
Deferred rent	1,431			1,347
Accrued taxes-unrecognized tax benefits	72			112
Deferred revenue	298			255
Post-retirement benefits and other non-current employee related liabilities	1,141			881
Other	958			870
	$	4,600		$	4,205

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(1) Includes liabilities in the amounts of $117 million and $121 million as of December 31, 2012 and 2011, respectively, for checks issued in excess of associated bank balances but not yet presented for collection.