Equity-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2019

Share-based Payment Arrangement [Abstract]

Schedule of Shares Awarded

The following table presents the cumulative total number of shares that was awarded under the 2017 Plan and the 2006 Plan for the periods indicated:

	As of December 31,
(In millions)	2019	2018	2017
Total number of shares awarded under the 2006 Plan	68.9	68.9	68.9
Total number of shares awarded under the 2017 Plan	7.6	3.9	0.4

Schedule of Deferred Stock Awards

	Shares (In thousands)		Weighted-Average Grant Date Fair Value
Deferred Stock Awards:
Outstanding as of December 31, 2017	6,848		$	65.44
Granted	2,500		101.25
Vested	(3,235	)	70.98
Forfeited	(138	)	80.60
Outstanding as of December 31, 2018	5,975		77.07
Granted	3,168		66.68
Vested	(3,089	)	71.20
Forfeited	(220	)	75.85
Outstanding as of December 31, 2019	5,834		74.33

Schedule of Performance Awards

	Shares (In thousands)		Weighted-Average Grant Date Fair Value
Performance Awards:
Outstanding as of December 31, 2017	1,548		$	66.09
Granted	1,067		74.68
Forfeited	(1	)	101.26
Paid out	(457	)	70.58
Outstanding as of December 31, 2018	2,157		69.36
Granted	510		66.04
Forfeited	(96	)	74.82
Paid out	(432	)	51.01
Outstanding as of December 31, 2019	2,139		71.82