Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Numerator:
Net income	$ 36,005	$ 16,406
Net income available to common stockholders	$ 35,341	$ 16,043
Denominator:
Weighted average common shares - basic (in shares)	420,510	420,154
Earnings per common share - basic (in usd per share)	$ 0.08	$ 0.04
Numerator:
Net income	$ 36,005	$ 16,406
Net income available for common stockholders before net income attributable to noncontrolling interests in CPLP	$ 35,929	$ 16,330
Denominator:
Weighted average shares — basic (in shares)	420,510	420,154
Add:
Potential dilutive common shares - stock options (in shares)	123	567
Weighted average units of CPLP convertible into common shares (in shares)	6,974	6,974
Weighted average common shares - diluted (in shares)	427,607	427,695
Earnings per common share - diluted (in usd per share)	$ 0.08	$ 0.04
Stock Option
Add:
Anti-dilutive stock options outstanding (in shares)	0	24
CPLP
Numerator:
Net income attributable to other noncontrolling interests	$ (588)	$ (287)
Numerator:
Net income attributable to other noncontrolling interests	(588)	(287)
Other Noncontrolling Interests
Numerator:
Net income attributable to other noncontrolling interests	(76)	(76)
Numerator:
Net income attributable to other noncontrolling interests	$ (76)	$ (76)