Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2017

Schedule of stock-based compensation expense

	Three months ended
	March 31,
	2017		2016
	amounts in millions
Operating costs and expenses:
Operating expense	$	5	—
Selling and marketing		18	—
Technology and content		22	—
General and administrative		32	(1)
	$	77	(1)

Common Series A

Schedule of share based compensation activity

				Weighted
				average		Aggregate
				remaining		intrinsic
	Series A	WAEP		contractual life		value
	(in thousands)					(in millions)
Outstanding at January 1, 2017	1,317	$	24.46
Granted	—	$	—
Exercised	(210)	$	18.44
Forfeited/Cancelled	(7)	$	40.51
Outstanding at March 31, 2017	1,100	$	25.51	3.3	years	$	22
Exercisable at March 31, 2017	839	$	20.74	2.5	years	$	21

Common Series B

Schedule of share based compensation activity

				Weighted
				average		Aggregate
				remaining		intrinsic
	Series B	WAEP		contractual life		value
	(in thousands)					(in millions)
Outstanding at January 1, 2017	659	$	38.48
Granted	—	$	—
Exercised	—	$	—
Forfeited/Cancelled	—	$	—
Outstanding at March 31, 2017	659	$	38.48	4.9	years	$	2
Exercisable at March 31, 2017	123	$	40.46	5.7	years	$	—