Noncontrolling Interests (Redeemable Preferred Units) (Narrative) (Details) - Series Four Preferred Units [Member] - Noncontrolling Interests [Member] $ / shares in Units, $ in Millions	Jun. 25, 2015 USD ($) $ / shares shares
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Preferred Units Liquidation Preference | $ / shares	$ 50.00
Series Four Preferred Units Redeemed (in shares) | shares	12,667
Redemption of Series Four Preferred Units | $	$ 0.6
Series Four Preferred Units Annual Dividend Payable Rate	2.00%