Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		9 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Operating cash flows:
Net income before non-controlling interests	$ 580	$ 344	$ 1,347	$ 1,071
Adjustments to reconcile net income to cash provided by operations:
Depreciation and amortization of fixed assets and capitalized software			188	159
Amortization of intangible assets			174	151
Non cash lease expense			165	151
Adjustments and payments related to contingent consideration liability			(30)	(9)
Charge for early extinguishment of debt	0	32	0	32
Provision for deferred income taxes			7	82
Loss (gain) on investments	31	(8)	33	(13)
Net loss on disposition of assets			5	21
Share-based compensation expense			147	117
Change in fair value of acquisition-related derivative contracts			0	8
Changes in assets and liabilities:
Net receivables			(389)	(437)
Other current assets			(81)	(4)
Other assets			140	(33)
Accounts payable and accrued liabilities			(129)	29
Accrued compensation and employee benefits			(848)	(670)
Accrued income taxes			204	6
Contributions to pension and other benefit plans in excess of current year credit			(165)	(172)
Other liabilities			(20)	36
Operating lease liabilities			(164)	(155)
Effect of exchange rate changes			(6)	(129)
Net cash provided by operations			578	241
Financing cash flows:
Purchase of treasury shares			0	(100)
Net increase in commercial paper			0	549
Net borrowings from term-loan and credit facilities			1,000	300
Proceeds from issuance of debt			737	6,459
Repayments of debt			(507)	(457)
Payments for early extinguishment of debt			0	(585)
Purchase of non-controlling interests			(3)	(50)
Acquisition-related derivative payments			0	(337)
Shares withheld for taxes on vested units – treasury shares			(115)	(87)
Issuance of common stock from treasury shares			66	108
Payments of deferred and contingent consideration for acquisitions			(69)	(39)
Distributions of non-controlling interests			(22)	(15)
Dividends paid			(466)	(422)
Net cash provided by financing activities			621	5,324
Investing cash flows:
Capital expenditures			(200)	(161)
Net sales of long-term investments			103	202
Purchase of equity investment			0	(91)	$ (79)
Proceeds from sales of fixed assets			1	2
Dispositions			93	165
Acquisitions			(562)	(5,500)
Other, net			1	(47)
Net cash used for investing activities			(564)	(5,430)
Effect of exchange rate changes on cash and cash equivalents			(79)	93
Increase in cash and cash equivalents			556	228
Cash and cash equivalents at beginning of period			1,155	1,066
Cash and cash equivalents at end of period	$ 1,711	$ 1,294	$ 1,711	$ 1,294	$ 1,155