CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash flows from operating activities
Net Income	$ 1,313	$ 996
Reconciliation of net income to net cash provided by operating activities:
Depreciation and amortization	119	107
Stock-based compensation	86	72
Deferred income taxes	59	46
Loss pursuant to the divestiture of MAKS	0	9
Settlement of treasury rate lock	0	(68)
Changes in assets and liabilities:
Accounts receivable	(29)	11
Other current assets	17	(45)
Other assets	(23)	(39)
Accounts payable and accrued liabilities	(182)	31
Deferred revenue	49	(60)
Unrecognized tax benefits and other non-current tax liabilities	(75)	(13)
Other liabilities	(64)	(70)
Net cash provided by operating activities	1,270	977
Cash flows from investing activities
Capital additions	(44)	(62)
Purchases of investments	(109)	(108)
Sales and maturities of investments	85	45
Cash paid for acquisitions, net of cash acquired	(138)	(698)
Receipts from settlements of net investment hedges	2	0
Payments for settlements of net investment hedges	(47)	0
Net cash used in investing activities	(251)	(823)
Cash flows from financing activities
Issuance of notes	0	995
Repayment of notes	0	(300)
Issuance of commercial paper	0	789
Repayment of commercial paper	0	(792)
Proceeds from stock-based compensation plans	23	29
Repurchase of shares related to stock-based compensation	(79)	(100)
Treasury shares	(503)	(253)
Dividends	(232)	(210)
Debt issuance costs, extinguishment costs and related fees	0	(17)
Dividends to noncontrolling interest	(1)	(1)
Payment to acquire noncontrolling interests	0	(17)
Net cash (used in) provided by financing activities	(792)	123
Effect of exchange rate changes on cash and cash equivalents	(15)	(10)
Increase in cash and cash equivalents	212	267
Cash and cash equivalents, beginning of period	2,597	1,832
Cash and cash equivalents, end of period	$ 2,809	$ 2,099