Consolidated Statements Of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating cash flows:
Net income before non-controlling interests	$ 1,795	$ 1,636	$ 1,497
Adjustments to reconcile net income to cash provided by operations:
Depreciation and amortization of fixed assets and capitalized software	308	314	302
Amortization of intangible assets	130	109	86
Adjustments and payments related to contingent consideration liability	(33)	11	19
Gain on deconsolidation of entity	(11)	0	0
Cost of early extinguishment of debt	0	0	137
Provision for deferred income taxes	68	178	127
Gain on investments	0	(38)	(37)
(Gain) Loss on disposition of assets	6	(13)	(38)
Share-based compensation expense	109	88	93
Changes in assets and liabilities:
Net receivables	(154)	(52)	(58)
Other current assets	(9)	3	8
Other assets	34	(10)	13
Accounts payable and accrued liabilities	55	(125)	45
Accrued compensation and employee benefits	2	23	167
Accrued income taxes	(21)	(15)	33
Contributions to pension and other benefit plans in excess of current year expense/credit	(279)	(231)	(152)
Other liabilities	(97)	(60)	(196)
Effect of exchange rate changes	104	70	73
Net cash provided by operations	2,007	1,888	2,119
Financing cash flows:
Purchase of treasury shares	(800)	(1,400)	(800)
Net increase in commercial paper	50	0	0
Proceeds from debt	347	1,091	1,386
Repayments of debt	(12)	(61)	(331)
Payments for early extinguishment of debt	0	0	(765)
Shares withheld for taxes on vested units – treasury shares	(39)	(49)	(64)
Issuance of common stock from treasury shares	188	224	263
Payments of deferred and contingent consideration for acquisitions	(98)	(49)	(55)
Distributions of non-controlling interests	(21)	(30)	(20)
Dividends paid	(682)	(632)	(582)
Net cash used for financing activities	(1,067)	(906)	(968)
Investing cash flows:
Capital expenditures	(253)	(325)	(368)
Net (purchases) sales of long-term investments	2	(65)	6
Purchase of equity investment	0	0	(304)
Proceeds from sales of fixed assets	4	2	3
Dispositions	0	71	0
Acquisitions	(813)	(952)	(554)
Other, net	4	4	(5)
Net cash used for investing activities	(1,056)	(1,265)	(1,222)
Effect of exchange rate changes on cash and cash equivalents	(232)	(301)	(274)
Decrease in cash and cash equivalents	(348)	(584)	(345)
Cash and cash equivalents at beginning of year	1,374	1,958	2,303
Cash and cash equivalents at end of year	$ 1,026	$ 1,374	$ 1,958