Stockholders' Equity and Earnings per Share - Senior Preferred Stock (Details) - USD ($) $ / shares in Units, shares in Thousands													3 Months Ended
	Mar. 30, 2018	Jun. 29, 2012	Mar. 30, 2012	Dec. 30, 2011	Sep. 30, 2011	Mar. 31, 2011	Dec. 30, 2010	Sep. 30, 2010	Jun. 30, 2010	Jun. 30, 2009	Mar. 31, 2009	Nov. 24, 2008	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2017	Sep. 08, 2008
Class of Stock [Line Items]
Non draw adjustment													$ 10,122,000,000
Aggregate liquidation preference on senior preferred stock													$ 81,770,000,000	$ 79,322,000,000
Senior Preferred Stock
Class of Stock [Line Items]
Shares Authorized													1,000
Shares Outstanding													1,000
Total Par Value													$ 1,000,000.00
Initial Liquidation Preference Of Senior Preferred Stock																	$ 1,000,000,000
Initial Liquidation Preference Price Per Share													$ 1,000
Increase in Senior Preferred Stock																$ 3,000,000,000
Increase in liquidation preference due to net worth increase													$ 2,448,000,000	$ 1,848,000,000	$ 1,826,000,000
Increase in liquidation preference	$ 312,000,000	$ 19,000,000	$ 146,000,000	$ 5,992,000,000	$ 1,479,000,000	$ 500,000,000	$ 100,000,000	$ 1,800,000,000	$ 10,600,000,000	$ 6,100,000,000	$ 30,800,000,000	$ 13,800,000,000	71,648,000,000
Aggregate liquidation preference on senior preferred stock													$ 81,770,000,000