Commitments and Contingencies (Commitments) (Details) $ in Millions	Jan. 01, 2016 USD ($)
Guarantor Obligations [Line Items]
Total outstanding	$ 145
Fiscal 2016	37
Fiscal 2017	72
Fiscal 2018 and thereafter	36
Total	145
Surety Bonds
Guarantor Obligations [Line Items]
Total outstanding	29
Fiscal 2016	8
Fiscal 2017	21
Fiscal 2018 and thereafter	0
Total	29
Letters of credit
Guarantor Obligations [Line Items]
Total outstanding	82
Fiscal 2016	10
Fiscal 2017	39
Fiscal 2018 and thereafter	33
Total	82
Standby letters of credit
Guarantor Obligations [Line Items]
Total outstanding	34
Guarantee obligations maximum exposure	34
Fiscal 2016	19
Fiscal 2017	12
Fiscal 2018 and thereafter	3
Total	$ 34