Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating Activities:
Net income	$ 2,303	$ 2,121	$ 1,638
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation	82	84	82
Amortization of intangibles	122	122	98
Provision for losses on accounts receivable	18	21	16
Deferred income taxes	46	81	0
Stock-based compensation	78	94	99
Gain on dispositions	(49)	0	0
Accrued legal settlements	0	1	55
Pension settlement charge, net of taxes	85	0	0
Other	93	52	96
Changes in operating assets and liabilities, net of effect of acquisitions and dispositions:
Accounts receivable	(135)	(164)	(196)
Prepaid and other current assets	(81)	(1)	10
Accounts payable and accrued expenses	73	(106)	75
Unearned revenue	256	70	85
Accrued legal settlements	(1)	(108)	(4)
Other current liabilities	(56)	(67)	(85)
Net change in prepaid/accrued income taxes	(41)	(7)	32
Net change in other assets and liabilities	(17)	(129)	15
Cash provided by operating activities	2,776	2,064	2,016
Investing Activities:
Capital expenditures	(115)	(113)	(123)
Acquisitions, net of cash acquired	(91)	(401)	(83)
Proceeds from dispositions	85	6	2
Changes in short-term investments	(10)	(5)	(5)
Cash used for investing activities	(131)	(513)	(209)
Financing Activities:
Proceeds from issuance of senior notes, net	1,086	489	0
Payments on senior notes	(868)	(403)	0
Dividends paid to shareholders	(560)	(503)	(421)
Distributions to noncontrolling interest holders, net	(143)	(154)	(111)
Repurchase of treasury shares	(1,240)	(1,660)	(1,001)
Exercise of stock options	40	34	75
Purchase of additional CRISIL shares	0	(25)	0
Employee withholding tax on share-based payments and other	(66)	(66)	(49)
Cash used for financing activities	(1,751)	(2,288)	(1,507)
Effect of exchange rate changes on cash	34	(84)	87
Net change in cash, cash equivalents, and restricted cash	928	(821)	387
Cash, cash equivalents, and restricted cash at beginning of year	1,958	2,779	2,392
Cash, cash equivalents, and restricted cash at end of year	2,886	1,958	2,779
Cash paid during the year for:
Interest	162	151	139
Income taxes	$ 659	$ 558	$ 709