CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities
Net Income	$ 996	$ 685
Reconciliation of net income to net cash provided by operating activities:
Depreciation and amortization	107	102
Stock-based compensation	72	70
Deferred income taxes	46	(3)
ROU Asset impairment & other non-cash restructuring/impairment charges	0	29
Loss pursuant to the divestiture of MAKS	9	9
Changes in assets and liabilities:
Accounts receivable	11	30
Other current assets	(45)	(58)
Other assets	(39)	(33)
Accounts payable and accrued liabilities	(37)	(96)
Deferred revenue	(60)	(8)
Unrecognized tax benefits and other non-current tax liabilities	(13)	(15)
Other liabilities	(70)	43
Net cash provided by operating activities	977	755
Cash flows from investing activities
Capital additions	(62)	(39)
Purchases of investments	(108)	(70)
Sales and maturities of investments	45	93
Cash paid for acquisitions, net of cash acquired	(698)	(37)
Net cash used in investing activities	(823)	(53)
Cash flows from financing activities
Issuance of notes	995	0
Repayment of notes	(300)	(450)
Issuance of commercial paper	789	942
Repayment of commercial paper	(792)	(815)
Proceeds from stock-based compensation plans	29	29
Repurchase of shares related to stock-based compensation	(100)	(75)
Treasury shares	(253)	(615)
Dividends	(210)	(189)
Debt issuance costs, extinguishment costs and related fees	(17)	0
Dividends to noncontrolling interest	(1)	(1)
Payment to acquire noncontrolling interests	(17)	(12)
Net cash provided by (used in) financing activities	123	(1,186)
Reclassification of cash to assets held for sale	0	(8)
Effect of exchange rate changes on cash and cash equivalents	(10)	3
Increase (decrease) in cash and cash equivalents	267	(489)
Cash and cash equivalents, beginning of period	1,832	1,685
Cash and cash equivalents, end of period	$ 2,099	$ 1,196