Condensed Consolidating Financial Statements (Statement of Income) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Condensed Income Statements, Captions [Line Items]
Revenue	$ 1,324	$ 1,263	$ 3,938	$ 3,761
Expenses:
Operating-related expenses	407	402	1,218	1,205
Selling and general expenses	470	462	1,134	1,186
Depreciation	20	21	64	64
Amortization of intangibles	17	12	40	36
Total expenses	914	897	2,456	2,491
Other (income) loss	0	0	(11)	9
Operating profit	410	366	1,493	1,261
Interest expense, net	30	12	62	40
Non-operating intercompany transactions	0	0	0	0
Income from continuing operations before taxes on income	380	354	1,431	1,221
Provision for taxes on income	99	139	439	428
Equity in net income (loss) income of subsidiaries	0	0	0	0
Income from continuing operations	281	215	992	793
Income from discontinued operations, net of tax	0	2	0	15
Net income	281	217	992	808
Less: net income from continuing operations attributable to noncontrolling interests	(29)	(27)	(83)	(77)
Net income	252	190	909	731
Comprehensive income	240	150	953	723
Eliminations
Condensed Income Statements, Captions [Line Items]
Revenue	(29)	(28)	(85)	(86)
Expenses:
Operating-related expenses	(29)	(28)	(85)	(86)
Selling and general expenses	0	0	0	0
Depreciation	0	0	0	0
Amortization of intangibles	0	0	0	0
Total expenses	(29)	(28)	(85)	(86)
Other (income) loss			0	0
Operating profit	0	0	0	0
Interest expense, net	0	0	0	0
Non-operating intercompany transactions	0	0	0	0
Income from continuing operations before taxes on income	0	0	0	0
Provision for taxes on income	0	0	0	0
Equity in net income (loss) income of subsidiaries	(1,386)	(349)	(1,385)	(972)
Income from continuing operations		(349)		(972)
Income from discontinued operations, net of tax		0		0
Net income	(1,386)	(349)	(1,385)	(972)
Less: net income from continuing operations attributable to noncontrolling interests	(29)	(27)	(83)	(77)
Net income	(1,415)	(376)	(1,468)	(1,049)
Comprehensive income	(1,386)	(353)	(1,390)	(981)
McGraw Hill Financial, Inc.
Condensed Income Statements, Captions [Line Items]
Revenue	165	149	481	443
Expenses:
Operating-related expenses	20	19	64	59
Selling and general expenses	206	147	282	241
Depreciation	9	10	29	30
Amortization of intangibles	0	1	0	2
Total expenses	235	177	375	332
Other (income) loss			0	3
Operating profit	(70)	(28)	106	108
Interest expense, net	32	15	69	46
Non-operating intercompany transactions	51	56	180	130
Income from continuing operations before taxes on income	(153)	(99)	(143)	(68)
Provision for taxes on income	(74)	(5)	(57)	8
Equity in net income (loss) income of subsidiaries	1,180	286	1,180	786
Income from continuing operations		192		710
Income from discontinued operations, net of tax		2		15
Net income	1,101	194	1,094	725
Less: net income from continuing operations attributable to noncontrolling interests	0	0	0	0
Net income	1,101	194	1,094	725
Comprehensive income	1,095	186	1,102	701
Standard & Poor's Financial Services, LLC
Condensed Income Statements, Captions [Line Items]
Revenue	523	507	1,640	1,535
Expenses:
Operating-related expenses	99	142	396	450
Selling and general expenses	69	150	243	394
Depreciation	4	4	14	13
Amortization of intangibles	0	0	0	0
Total expenses	172	296	653	857
Other (income) loss			0	0
Operating profit	351	211	987	678
Interest expense, net	0	0	0	0
Non-operating intercompany transactions	48	13	139	27
Income from continuing operations before taxes on income	303	198	848	651
Provision for taxes on income	100	53	291	225
Equity in net income (loss) income of subsidiaries	206	63	205	186
Income from continuing operations		208		612
Income from discontinued operations, net of tax		0		0
Net income	409	208	762	612
Less: net income from continuing operations attributable to noncontrolling interests	0	0	0	0
Net income	409	208	762	612
Comprehensive income	408	208	761	588
Non-Guarantor Subsidiaries
Condensed Income Statements, Captions [Line Items]
Revenue	665	635	1,902	1,869
Expenses:
Operating-related expenses	317	269	843	782
Selling and general expenses	195	165	609	551
Depreciation	7	7	21	21
Amortization of intangibles	17	11	40	34
Total expenses	536	452	1,513	1,388
Other (income) loss			(11)	6
Operating profit	129	183	400	475
Interest expense, net	(2)	(3)	(7)	(6)
Non-operating intercompany transactions	(99)	(69)	(319)	(157)
Income from continuing operations before taxes on income	230	255	726	638
Provision for taxes on income	73	91	205	195
Equity in net income (loss) income of subsidiaries	0	0	0	0
Income from continuing operations		164		443
Income from discontinued operations, net of tax		0		0
Net income	157	164	521	443
Less: net income from continuing operations attributable to noncontrolling interests	0	0	0	0
Net income	157	164	521	443
Comprehensive income	$ 123	$ 109	$ 480	$ 415