Summary of Significant Accounting Policies (Details) (USD $) In Billions, unless otherwise specified	Mar. 31, 2014 state sqft property
Business Overview:
Gross investment amount, total	$ 3.2
Number of real estate properties	201
Total number of company owned real estate properties	198
Number of states that the Company owns real estate in, whole units	28
Square footage of owned real estate properties	14,000,000
Approximate square feet for which Nationwide property management services provided by company	10,300,000