Related-Party Transactions and Arrangements (Details) (USD $)	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012
Related Party Transaction [Line Items]
Due to affiliates	$ 7,512,000	$ 2,156,000
Advisors
Related Party Transaction [Line Items]
Cumulative noncompounded annual return	8.00%
Advisors \| Listing commission
Related Party Transaction [Line Items]
Commissions performance and other fees percent	15.00%
Advisors \| Minimum
Related Party Transaction [Line Items]
Operating expense reimbursement percent	2.00%
Operating expense reimbursement percent of net income	25.00%
Series c, llc
Related Party Transaction [Line Items]
Ownership interest acquired	100.00%
Number of businesses acquired (in properties)	2
Aggregate purchase price	4,300,000
Series c, llc \| Line of credit \| Revolving credit facility
Related Party Transaction [Line Items]
Interest expense		39,000
Offering Costs [Member] \| Advisors
Related Party Transaction [Line Items]
Payments to related parties	189,000,000	30,300,000
Due to affiliates	4,900,000	1,700,000
Selling commissions \| Dealer manager commission \| Maximum
Related Party Transaction [Line Items]
Commissions percentage on stock sales and related dealer manager fees	7.00%
Selling commissions \| Advisors
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	122,082,000	20,107,000
Selling commissions reallowed by CCC \| Dealer manager commission reallowed
Related Party Transaction [Line Items]
Commissions percentage on stock sales and related dealer manager fees	100.00%
Selling commissions reallowed by CCC \| Advisors
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	122,082,000	20,107,000
Dealer manager fees \| Dealer manager
Related Party Transaction [Line Items]
Commissions percentage on stock sales and related dealer manager fees	2.00%
Dealer manager fees \| Advisors
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	35,685,000	5,944,000
Dealer manager fees reallowed by CCC \| Advisors
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	20,183,000	3,104,000
Other organization and offering expenses \| Advisors
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	36,179,000	5,983,000
Other organization and offering expenses \| Advisors \| Maximum
Related Party Transaction [Line Items]
Organization and offering expense	2.00%
Acquisitions and Operations Costs [Member] \| Advisors
Related Party Transaction [Line Items]
Payments to related parties	46,000,000	11,000,000
Due to affiliates	2,600,000	300,000
Acquisition fees and expenses \| Advisors
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	35,109,000	10,342,000
Acquisition fees and expenses \| Advisors \| Maximum
Related Party Transaction [Line Items]
Acquisition and advisory fee	6.00%
Acquisition fees and expenses \| Advisors \| Maximum \| Contract purchase price of each asset
Related Party Transaction [Line Items]
Acquisition and advisory fee	2.00%
Advisory fees and expenses \| Advisors
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	10,549,000	812,000
Operating expenses \| Advisors
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	2,905,000	138,000
Property sales commission \| Advisors \| Contract sale price of each property
Related Party Transaction [Line Items]
Commissions performance and other fees percent	1.00%
Property portfolio \| Advisors \| Maximum
Related Party Transaction [Line Items]
Commissions performance and other fees percent	6.00%
Performance fee \| Advisors
Related Party Transaction [Line Items]
Commissions performance and other fees percent	15.00%
Average invested assets between $0 to $2 billion \| Advisors
Related Party Transaction [Line Items]
Asset management or advisory fees percent	0.75%
Average invested assets between $0 to $2 billion \| Advisors \| Maximum
Related Party Transaction [Line Items]
Average invested assets	2,000,000,000.0
Average invested assets between $0 to $2 billion \| Advisors \| Minimum
Related Party Transaction [Line Items]
Average invested assets	0
Average invested assets between $2 billion to $4 billion \| Advisors
Related Party Transaction [Line Items]
Asset management or advisory fees percent	0.70%
Average invested assets between $2 billion to $4 billion \| Advisors \| Maximum
Related Party Transaction [Line Items]
Average invested assets	4,000,000,000
Average invested assets between $2 billion to $4 billion \| Advisors \| Minimum
Related Party Transaction [Line Items]
Average invested assets	2,000,000,000
Average invested assets over $4 billion \| Advisors
Related Party Transaction [Line Items]
Asset management or advisory fees percent	0.65%
Average invested assets over $4 billion \| Advisors \| Minimum
Related Party Transaction [Line Items]
Average invested assets	$ 4,000,000,000.0

Acquisition and advisory fees as a percentage of the contract purchase price of real estate assets acquired.

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The asset management or adviorsy fee as a percentage of average invested assets.

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The entity's average invested assets.

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The commissions as a percentage of gross proceeds paid to affiliates in connection with the entity's offering of shares.

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No definition available.

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Commissions, performance fees and other fees as a percent of certain transactions and/or events payable to advisors in accordance with the advisory agreements.

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The cumulative noncompounded annual return to investors.

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The limit of operating expense reimburement as a percentage of average invested assets.

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The limit of operating expense reimburement as a percentage of net income.

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The percentage of aggregate offering proceeds for which all organization and offering expenses are reimbursed by the entity.

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Payments made to related parties during the period.

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of payable due to an entity that is affiliated with the reporting entity by means of direct or indirect ownership.

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Amount of the cost of borrowed funds accounted for as interest expense.

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The number of businesses acquired by the entity during the period.

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Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

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