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Equity and Accumulated Other Comprehensive Loss, Net (Schedule of Dividends) (Details) $ / shares in Units, $ in Thousands | 9 Months Ended
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Sep. 30, 2018 USD ($) $ / shares
Series C Preferred Stock |
Dividends Payable [Line Items] |
Dividends, preferred stock | $ 9,999
Preferred stock dividend per share amount (in dollars per share) | $ / shares | $ 1.65625
Series C Preferred Stock | March 1, 2018 Installment |
Dividends Payable [Line Items] |
Dividends, preferred stock | $ 3,333
Series C Preferred Stock | May 8, 2018 Installment |
Dividends Payable [Line Items] |
Dividends, preferred stock | 3,333
Series C Preferred Stock | August 11, 2018 Installment |
Dividends Payable [Line Items] |
Dividends, preferred stock | 3,333
Series G Preferred Stock |
Dividends Payable [Line Items] |
Dividends, preferred stock | $ 11,016
Preferred stock dividend per share amount (in dollars per share) | $ / shares | $ 1.46875
Series G Preferred Stock | March 1, 2018 Installment |
Dividends Payable [Line Items] |
Dividends, preferred stock | $ 3,672
Series G Preferred Stock | May 8, 2018 Installment |
Dividends Payable [Line Items] |
Dividends, preferred stock | 3,672
Series G Preferred Stock | August 11, 2018 Installment |
Dividends Payable [Line Items] |
Dividends, preferred stock | 3,672
Series H Preferred Stock |
Dividends Payable [Line Items] |
Dividends, preferred stock | $ 20,190
Preferred stock dividend per share amount (in dollars per share) | $ / shares | $ 1.84375
Series H Preferred Stock | March 1, 2018 Installment |
Dividends Payable [Line Items] |
Dividends, preferred stock | $ 6,730
Series H Preferred Stock | May 8, 2018 Installment |
Dividends Payable [Line Items] |
Dividends, preferred stock | 6,730
Series H Preferred Stock | August 11, 2018 Installment |
Dividends Payable [Line Items] |
Dividends, preferred stock | 6,730
Series I Preferred Stock |
Dividends Payable [Line Items] |
Dividends, preferred stock | $ 11,907
Preferred stock dividend per share amount (in dollars per share) | $ / shares | $ 1.5875
Series I Preferred Stock | March 1, 2018 Installment |
Dividends Payable [Line Items] |
Dividends, preferred stock | $ 3,969
Series I Preferred Stock | May 8, 2018 Installment |
Dividends Payable [Line Items] |
Dividends, preferred stock | 3,969
Series I Preferred Stock | August 11, 2018 Installment |
Dividends Payable [Line Items] |
Dividends, preferred stock | 3,969
Series J Preferred Stock |
Dividends Payable [Line Items] |
Dividends, preferred stock | $ 7,875
Preferred stock dividend per share amount (in dollars per share) | $ / shares | $ 1.3125
Series J Preferred Stock | March 1, 2018 Installment |
Dividends Payable [Line Items] |
Dividends, preferred stock | $ 2,625
Series J Preferred Stock | May 8, 2018 Installment |
Dividends Payable [Line Items] |
Dividends, preferred stock | 2,625
Series J Preferred Stock | August 11, 2018 Installment |
Dividends Payable [Line Items] |
Dividends, preferred stock | 2,625
Common Stock |
Dividends Payable [Line Items] |
Dividends, common stock | $ 624,252
Common stock dividend per share amount (in dollars per share) | $ / shares | $ 4.04
Common Stock | March 1, 2018 Installment |
Dividends Payable [Line Items] |
Dividends, common stock | $ 208,015
Common Stock | May 8, 2018 Installment |
Dividends Payable [Line Items] |
Dividends, common stock | 208,071
Common Stock | August 11, 2018 Installment |
Dividends Payable [Line Items] |
Dividends, common stock | $ 208,166

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