Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Operating Activities:
Net income	$ 1,035	$ 887
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation	40	39
Amortization of intangibles	57	49
Provision for losses on accounts receivable	10	13
Stock-based compensation	46	41
Other	102	26
Changes in operating assets and liabilities, net of effect of acquisitions and dispositions:
Accounts receivable	19	(49)
Prepaid and other current assets	(19)	(13)
Accounts payable and accrued expenses	(217)	(139)
Unearned revenue	41	(17)
Accrued legal settlements	(29)	(4)
Other current liabilities	(69)	(85)
Net change in prepaid/accrued income taxes	24	(45)
Net change in other assets and liabilities	(137)	(29)
Cash provided by operating activities	903	674
Investing Activities:
Capital expenditures	(60)	(56)
Acquisitions, net of cash acquired	(246)	(70)
Proceeds from dispositions	0	2
Changes in short-term investments	1	0
Cash used for investing activities	(305)	(124)
Financing Activities:
Proceeds from issuance of senior notes, net	489	0
Payments on senior notes	(403)	0
Dividends paid to shareholders	(253)	(212)
Distributions to noncontrolling interest holders	(78)	(54)
Purchase of CRISIL shares	(25)	0
Repurchase of treasury shares	(1,100)	(346)
Exercise of stock options	16	38
Employee withholding tax on share-based payments	(50)	(44)
Cash used for financing activities	(1,404)	(618)
Effect of exchange rate changes on cash from continuing operations	(38)	60
Net change in cash, cash equivalents, and restricted cash	(844)	(8)
Cash, cash equivalents, and restricted cash at beginning of period	2,779	2,392
Cash, cash equivalents, and restricted cash at end of period	$ 1,935	$ 2,384