Consolidated Statements Of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Operating cash flows:
Net income before non-controlling interests	$ 1,670	$ 1,512	$ 1,795
Adjustments to reconcile net income to cash provided by operations:
Depreciation and amortization of fixed assets and capitalized software	311	312	308
Amortization of intangible assets	183	169	130
Adjustments and payments related to contingent consideration liability	(4)	(24)	(33)
Loss (gain) on deconsolidation of entity	11	0	(11)
(Benefit) Provision for deferred income taxes	(39)	396	68
Loss (Gain) on investments	12	(15)	0
(Gain) Loss on disposition of assets	(48)	10	6
Share-based compensation expense	193	149	109
Change in fair value of acquisition-related derivative contracts	441	0	0
Changes in assets and liabilities:
Net receivables	(78)	(454)	(154)
Other current assets	26	(3)	(9)
Other assets	(37)	(199)	34
Accounts payable and accrued liabilities	23	87	55
Accrued compensation and employee benefits	68	63	2
Accrued income taxes	(40)	37	(21)
Contributions to pension and other benefit plans in excess of current year expense/credit	(291)	(457)	(279)
Other liabilities	9	406	(97)
Effect of exchange rate changes	18	(96)	104
Net cash provided by operations	2,428	1,893	2,007
Financing cash flows:
Purchase of treasury shares	(675)	(900)	(800)
Net increase in commercial paper	0	0	50
Proceeds from issuance of debt	591	987	347
Repayments of debt	(263)	(315)	(12)
Payment of bridge loan fees	(35)	0	0
Shares withheld for taxes on vested units – treasury shares	(67)	(49)	(39)
Issuance of common stock from treasury shares	93	166	188
Payments of deferred and contingent consideration for acquisitions	(117)	(136)	(98)
Distributions of non-controlling interests	(30)	(22)	(21)
Dividends paid	(807)	(740)	(682)
Net cash used for financing activities	(1,310)	(1,009)	(1,067)
Investing cash flows:
Capital expenditures	(314)	(302)	(253)
Net sales (purchases) of long-term investments	4	(13)	2
Proceeds from sales of fixed assets	3	8	4
Dispositions	110	0	0
Acquisitions	(884)	(655)	(813)
Other, net	(8)	6	4
Net cash used for investing activities	(1,089)	(956)	(1,056)
Effect of exchange rate changes on cash and cash equivalents	(168)	251	(232)
(Decrease) Increase in cash and cash equivalents	(139)	179	(348)
Cash and cash equivalents at beginning of year	1,205	1,026	1,374
Cash and cash equivalents at end of year	$ 1,066	$ 1,205	$ 1,026