Proceedings Under Chapter 11 - Leveraged ESOP Transactions (Details) - USD ($)					12 Months Ended
	Dec. 20, 2007	Jun. 04, 2007	Apr. 25, 2007	Apr. 01, 2007	Dec. 31, 2016	Dec. 31, 2015	Dec. 28, 2014	Dec. 31, 2008	Dec. 31, 2012	Dec. 30, 2012
Reorganization [Line Items]
Interest					$ 160,200,000	$ 130,311,000	$ 140,338,000
Long term debt					$ 3,458,298,000
Predecessor
Reorganization [Line Items]
Stock issued during period (ESOP), shares				8,928,571
Price per share (usd per share)				$ 28
Common stock outstanding, shares	56,521,739
Employee Stock Ownership Plan (ESOP), shares committed for release or allocation to employees										8,294,000
Number of shares authorized to be repurchased (shares)			126,000,000
Tender price per share (usd per share)			$ 34
Stock repurchased and retired during the period, shares	119,000,000	126,000,000
Stock repurchased and retired during the period, value	$ 4,032,000,000	$ 4,289,000,000
Common stock par value (usd per share)	$ 0.01								$ 0.01
Conversion of Stock, Right to Receive Cash	$ 34
Payments for merger related costs	$ 5,000,000		$ 3,000,000
Proceeds from issuance of warrants and debt	$ 315,000,000
Predecessor | Warrant Issued to Zell Entity
Reorganization [Line Items]
Predecessor Warrants term (years)	15 years
Warrants that entitle the purchase of common stock, shares	43,478,261
Securities called by warrants or rights as percent of economic equity interest	40.00%
Aggregate exercise price of warrants	$ 500,000,000
Aggregate exercise price of warrants, amount increased per year	$ 10,000,000
Duration of increasing warrant price (years)	10 years
Maximum aggregate exercise price of warrants	$ 600,000,000
Predecessor | Warrant Issued to Zell Entity | Zell Entity | Noncontrolling Interest
Reorganization [Line Items]
Warrants that entitle the purchase of common stock, shares	12,611,610
Predecessor | Employee Stock Ownership Plan (ESOP) Promissory Note | Notes Payable, Other Payables
Reorganization [Line Items]
ESOP debt structure, direct loan				$ 250,000,000
Debt term				30 years
Predecessor | Subordinate Promissory Note | Subordinated Debt
Reorganization [Line Items]
Interest	$ 6,000,000
Face amount of debt	$ 255,000,000								$ 225,000,000
Debt instrument interest rate, percent	4.64%
Paid-in-Kind Interest								$ 10,000,000
Predecessor | Subordinate Promissory Note | Subordinated Debt | Zell Entity | Noncontrolling Interest
Reorganization [Line Items]
Long term debt	$ 65,000,000