CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash flows from operating activities:
Net loss	$ (24)	$ (202)
Adjustments to reconcile net loss to cash provided by operating activities	179	309
Changes in working capital accounts, net of effects of acquisitions	6	(78)
Changes in deferred income taxes and other	6	1
Net cash provided by operating activities	167	30
Cash flows from investing activities:
Capital expenditures	(67)	(88)
Acquisitions of businesses and assets, net of cash acquired	0	(274)
Distributions of capital from equity investments	3	2
Net cash used in investing activities	(64)	(360)
Cash flows from financing activities:
Proceeds from Lines of Credit	40	0
Repayments under revolving credit facility	(175)	(295)
Proceeds from issuance of senior notes and term loans	1,100	2,512
Repayment of senior notes and term loans (inclusive of redemption premium)	0	(2,210)
Repayment of assumed NYX debt	0	(288)
Payments on long-term debt	(12)	(2)
Payment of Deferred Financing Costs	(14)	(39)
Payments on license obligations	(7)	(7)
Sale of future revenue	11	0
Net redemptions of common stock under stock-based compensation plans and other	(1)	(17)
Net cash provided by (used in) financing activities	942	(346)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	1	2
Increase in cash, cash equivalents and restricted cash	1,046	(674)
Cash, cash equivalents and restricted cash, beginning of period	220	834
Cash, cash equivalents and restricted cash, end of period	1,266	160
Supplemental cash flow information:
Cash paid for interest	80	161
Income taxes paid	10	7
Distributed earnings from equity investments	4	1
Supplemental non-cash transactions:
Non-cash rollover and refinancing of Term loans	0	3,275
Non-cash interest expense	7	6
NYX non-cash consideration transferred (inclusive of 2017 acquisition of ordinary shares)	$ 0	$ 93