Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

Composition of Stock-Based Compensation Expense
	Three Months Ended March 31,
(In millions)	2015		2014
Corporate expense	$	14	$	7
Property, general, administrative, and other	14		19
Total stock-based compensation expense	$	28	$	26

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

Options and Restricted Stock Units Granted
	Three Months Ended March 31,
	2015			2014
	Shares	Wtd Avg Fair Value		Shares	Wtd Avg Fair Value
Stock options	1,000,000	$	5.01	—	$	—
Restricted stock units	1,827,219	13.01		1,104	23.03

Options and Restricted Stock Units Outstanding
	March 31, 2015			December 31, 2014
	Shares	Wtd Avg Fair Value		Shares	Wtd Avg Fair Value
Stock options	10,110,589	$	3.34	9,379,885	$	3.35
Restricted stock units	3,545,446	15.53		2,156,727	17.45

Schedule of Share-based Compensation, CIE Stock Options, Activity [Table Text Block]

Options and Restricted Stock Units Granted
	Three Months Ended March 31,
	2015			2014
	Shares	Wtd Avg Fair Value		Shares	Wtd Avg Fair Value
Stock options	1,029	$	4,770.92	340	$	4,250.00
Restricted stock units	536	12,630.00		388	8,500.00

Options and Restricted Stock Units Outstanding
	March 31, 2015			December 31, 2014
	Shares	Wtd Avg Fair Value		Shares	Wtd Avg Fair Value
Stock options	13,527	$	1,852.62	13,279	$	1,616.01
Restricted stock units	5,418	6,972.40		5,096	6,494.71