Equity - Shares and Units (Details)	6 Months Ended
	Jun. 30, 2018 shares
Equity [Abstract]
OP Unit, redemption term for cash	1 year
Dividends on common stock received until performance criteria met for LTIP units (as a percent)	10.00%
Dividends on common stock received after performance criteria met for LTIP units (as a percent)	90.00%
Dividends on common stock received in periods after performance criteria met for LTIP units (as a percent)	100.00%
OP units outstanding (in shares)	303,333,599
OP units owned by the Company (in shares)	167,704,632
OP units owned by the Company (as a percent)	55.30%
OP units not owned by the Company (in shares)	135,628,967
OP units not owned by the Company (as a percent)	44.70%