Stock Compensation Plans (Tables)

6 Months Ended

Jun. 30, 2016

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of stock-based compensation expense recognized in the consolidated statements of operations

Total stock-based compensation expense recognized in "Cost of services" and “Selling, general, and administrative” on the consolidated statements of operations resulting from stock options, non-vested restricted stock awards, and non-vested restricted stock units was as follows for the periods presented:

	Three months ended June 30,				Six months ended June 30,
(in millions)	2016		2015		2016		2015
Cost of services	$	23	$	—	$	72	$	—
Selling, general, and administrative	33		16		99		23
Total	$	56	$	16	$	171	$	23