Supplemental Disclosures to Consolidated Statements of Cash Flows (Tables)

12 Months Ended

Dec. 31, 2014

Supplemental Disclosures to Consolidated Statements of Cash Flow [Abstract]

Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]

	Years ended December 31,
	2014		2013	2012
	amounts in millions
Cash paid for acquisitions:
Fair value of assets acquired	$	—	7	13
Intangibles not subject to amortization		—	12	45
Intangibles subject to amortization		—	2	40
Net liabilities assumed		—	(7)	(19)
Deferred tax assets (liabilities)		—	10	(8)
Other		—	—	12
Cash paid for acquisitions, net of cash acquired	$	—	24	83
Cash paid for interest	$	362	362	411
Cash paid for income taxes	$	44	410	133