Investments (Tables)

3 Months Ended

Mar. 31, 2013

Investments [Abstract]

Schedule of investments in marketable equity securities and other

The components of investments were as follows:

	March 31, 2013		December 31, 2012
	(in millions)
Marketable equity securities	$	45	$	45
Equity method and other investments	821		1,008
	$	866	$	1,053

Investee summarized income statement information

Summarized financial information for Clearwire is as follows:

	Three Months Ended
	March 31,
	2013			2012
	(in millions)
Revenues	$	318		$	323
Operating expenses	(622		)	(745		)
Operating loss	$	(304	)	$	(422	)
Net loss from continuing operations before non-controlling interests	$	(462	)	$	(561	)
Net income from discontinued operations before non-controlling interests	$	—		$	1