Restructuring (Tables)

12 Months Ended

Dec. 31, 2018

Restructuring and Related Activities [Abstract]

Schedule of Initial Restructuring Charge Recorded and the Ending Reserve Balance

The initial restructuring charge recorded and the ending reserve balance as of December 31, 2018 by segment is as follows:

	2018 Restructuring Plan				2017 Restructuring Plan
(in millions)	Initial Charge Recorded		Ending Reserve Balance		Initial Charge Recorded		Ending Reserve Balance
Ratings	$	8	$	8	$	25	$	7
Market Intelligence	7		7		8		1
Platts	—		—		1		—
Indices	—		—		—		—
Corporate	10		9		10		2
Total	$	25	$	24	$	44	$	10