Stockholders' Equity - Class C Redeemable Preferred Units (Details) - Class C Redeemable Preferred Units shares in Millions, $ in Millions	Dec. 31, 2016 USD ($) shares
Limited Partners' Capital Account [Line Items]
Temporary equity, coupon rate	12.50%
Conversion rate	1.0
Various Third Parties and Related Parties
Limited Partners' Capital Account [Line Items]
Temporary equity, stock issued during period (in shares) | shares	43.1
Temporary equity, value stock issued during period | $	$ 226.9