Preferred Stock and Warrants Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions		1 Months Ended	11 Months Ended	12 Months Ended
	Jun. 07, 2013	Jun. 28, 2015	Dec. 29, 2013	Jan. 03, 2016	Dec. 28, 2014
Preferred Units [Line Items]
Preferred Stock, Shares Authorized				1,000,000
Warrants	$ 367			$ 0	$ 367
Berkshire Hathaway
Preferred Units [Line Items]
Noncash or Part Noncash Acquisition, Noncash Financial or Equity Instrument Consideration, Warrants Issued	46,000,000			20,000,000
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 0.01
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned	$ 8,000
Common Shares Purchased When Warrant Was Exercised		46,000,000
Nine point zero zero percent Series A cumulative redeemable preferred stock
Preferred Units [Line Items]
Preferred Stock, Shares Authorized				80,000	80,000
9.00% Series A cumulative redeemable preferred stock, 80,000 shares issued				80,000	80,000
9.00% Series A cumulative redeemable preferred stock, dividend percentage				9.00%	9.00%
Preferred Stock, Value, Outstanding	$ 7,600
Nine point zero zero percent Series A cumulative redeemable preferred stock | Berkshire Hathaway
Preferred Units [Line Items]
9.00% Series A cumulative redeemable preferred stock, 80,000 shares issued	80,000
9.00% Series A cumulative redeemable preferred stock, dividend percentage	9.00%			9.00%
Preferred Stock, Liquidation Preference Per Share				$ 100,000
Nine point zero zero percent Series A cumulative redeemable preferred stock | Berkshire Hathaway | June 7, 2016 through June 6, 2017
Preferred Units [Line Items]
Preferred Stock, Redemption Price Per Share				104,000
Nine point zero zero percent Series A cumulative redeemable preferred stock | Berkshire Hathaway | June 7, 2017 through June 6, 2018
Preferred Units [Line Items]
Preferred Stock, Redemption Price Per Share				105,000
Nine point zero zero percent Series A cumulative redeemable preferred stock | Berkshire Hathaway | June 7, 2018 through June 6, 2019
Preferred Units [Line Items]
Preferred Stock, Redemption Price Per Share				106,000
Nine point zero zero percent Series A cumulative redeemable preferred stock | Berkshire Hathaway | June 7, 2019 through June 6, 2020
Preferred Units [Line Items]
Preferred Stock, Redemption Price Per Share				107,000
Nine point zero zero percent Series A cumulative redeemable preferred stock | Berkshire Hathaway | After June 7, 2020
Preferred Units [Line Items]
Preferred Stock, Redemption Price Per Share				108,000
Nine point zero zero percent Series A cumulative redeemable preferred stock | Berkshire Hathaway | After June 7, 2021
Preferred Units [Line Items]
Preferred Stock, Redemption Price Per Share				$ 108,000
Successor
Preferred Units [Line Items]
Accretion of Series A Preferred Stock to redemption value			$ 687	$ 0	$ 0
Successor | Nine point zero zero percent Series A cumulative redeemable preferred stock | Berkshire Hathaway | June 7, 2016 through June 6, 2017
Preferred Units [Line Items]
Accretion of Series A Preferred Stock to redemption value			$ 687