Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Operating cash flows:
Net income before non-controlling interests	$ 1,085	$ 970
Adjustments to reconcile net income to cash provided by operations:
Depreciation and amortization of fixed assets and capitalized software	156	154
Amortization of intangible assets	80	67
Adjustments and payments related to contingent consideration liability	(13)	(8)
Gain on deconsolidation of subsidiary	0	(12)
Provision for deferred income taxes	42	48
(Gain) loss on investments	(5)	2
Loss on disposition of assets	9	3
Share-based compensation expense	75	58
Changes in assets and liabilities:
Net receivables	(318)	(280)
Other current assets	(18)	(37)
Other assets	(34)	(1)
Accounts payable and accrued liabilities	52	(24)
Accrued compensation and employee benefits	(579)	(645)
Accrued income taxes	45	35
Contributions to pension and other benefit plans in excess of current year expense/credit	(214)	(139)
Other liabilities	9	(10)
Effect of exchange rate changes	(29)	48
Net cash provided by operations	343	229
Financing cash flows:
Purchase of treasury shares	(400)	(410)
Net increase in commercial paper	100	0
Proceeds from debt	987	347
Repayments of debt	(256)	(6)
Shares withheld for taxes on vested units – treasury shares	(48)	(38)
Issuance of common stock from treasury shares	94	131
Payments of deferred and contingent consideration for acquisitions	(97)	(63)
Distributions of non-controlling interests	(13)	(11)
Dividends paid	(351)	(326)
Net cash provided by (used for) financing activities	16	(376)
Investing cash flows:
Capital expenditures	(144)	(114)
Net sales (purchases) of long-term investments	12	(4)
Proceeds from sales of fixed assets	4	1
Acquisitions	(412)	(77)
Other, net	2	4
Net cash used for investing activities	(538)	(190)
Effect of exchange rate changes on cash and cash equivalents	119	(63)
Decrease in cash and cash equivalents	(60)	(400)
Cash and cash equivalents at beginning of period	1,026	1,374
Cash and cash equivalents at end of period	$ 966	$ 974