Unaudited Quarterly Financial Data (Tables)

12 Months Ended

Dec. 31, 2014

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Information

The following table presents quarterly data for the periods presented on the consolidated statement of operations:

	Year Ended December 31, 2014
	First  Quarter			Second Quarter			Third Quarter			Fourth Quarter
Revenues	$	2,202		$	2,259		$	2,287		$	2,360
Income from operations	$	240		$	236		$	218		$	277
Net loss	$	(37	)	$	(45	)	$	(53	)	$	(48	)
Loss per common share, basic and diluted	$	(0.35	)	$	(0.42	)	$	(0.49	)	$	(0.44	)
Weighted average common shares outstanding, basic and diluted	106,439,198			107,975,937			108,792,605			110,242,507

	Year Ended December 31, 2013
	First  Quarter			Second Quarter			Third Quarter			Fourth Quarter
Revenues	$	1,917		$	1,972		$	2,118		$	2,148
Income from operations	$	222		$	234		$	209		$	244
Net income (loss)	$	(42	)	$	(96	)	$	(70	)	$	39
Loss per common share:
Basic	$	(0.42	)	$	(0.96	)	$	(0.68	)	$	0.38
Diluted	(0.42		)	(0.96		)	(0.68		)	0.35
Weighted average common shares outstanding:
Basic	100,327,418			100,600,678			102,924,443			103,836,535
Diluted	100,327,418			100,600,678			102,924,443			111,415,982