Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Operating Activities:
Net income	$ 1,531	$ 1,055
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation	39	41
Amortization of intangibles	61	63
Provision for losses on accounts receivable	14	12
Deferred income taxes	3	30
Stock-based compensation	22	33
Gain on disposition	(8)	0
Pension settlement charges, net of taxes	2	85
Other	27	38
Changes in operating assets and liabilities, net of effect of acquisitions and dispositions:
Accounts receivable	30	(95)
Prepaid and other current assets	(48)	(42)
Accounts payable and accrued expenses	(192)	(74)
Unearned revenue	(56)	0
Accrued legal settlements	0	(1)
Other current liabilities	(16)	(83)
Net change in prepaid/accrued income taxes	247	15
Net change in other assets and liabilities	(39)	(67)
Cash provided by operating activities	1,617	1,010
Investing Activities:
Capital expenditures	(18)	(46)
Acquisitions, net of cash acquired	(185)	(4)
Changes in short-term investments	15	(3)
Cash used for investing activities	(186)	(53)
Financing Activities:
Dividends paid to shareholders	(323)	(281)
Distributions to noncontrolling interest holders, net	(92)	(59)
Repurchase of treasury shares	(1,153)	(644)
Exercise of stock options	12	31
Employee withholding tax on share-based payments and other	(54)	(55)
Cash used for financing activities	(1,610)	(1,008)
Effect of exchange rate changes on cash	(23)	13
Net change in cash, cash equivalents, and restricted cash	(202)	(38)
Cash, cash equivalents, and restricted cash at beginning of period	2,886	1,958
Cash, cash equivalents, and restricted cash at end of period	$ 2,684	$ 1,920