Debt and Credit Facilities - Other information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Debt
Minimum fixed charge coverage required to be maintained by TFC (as a percent)	125.00%
Minimum shareholder's equity required to be maintained by TFC	$ 125
Cash paid to TFC to maintain compliance with covenants	0	$ 0	$ 0
6% Fixed-to-Floating Rate Junior Subordinated Notes | Finance group
Debt
Face value of the notes	$ 299
Interest rate (as a percent)	6.00%	6.00%
Debt Instrument, Maturity Date	Feb. 15, 2067
Debt Instrument call date earliest	Feb. 15, 2017
Debt Instrument call date latest	Feb. 15, 2042
Fixed interest rate on notes (as a percent)	6.00%
Debt instrument initial fixed rate duration description	February 15, 2017
Floating variable rate of debt instrument (as a percent)	1.735%
Debt instrument description of variable rate basis after specified term at fixed rate	three-month London Interbank Offered Rate