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Accounts Receivable and Finance Receivables - Summary of impaired finance receivables, excluding leveraged leases, and the average recorded investment (Details) - USD ($)
$ in Millions
9 Months Ended 12 Months Ended
Sep. 29, 2018
Dec. 30, 2017
Summary of impaired finance receivables, excluding leveraged leases, and the average recorded investment    
Recorded investment, impaired loans with related allowance for losses $ 14 $ 24
Recorded investment, impaired loans with no related allowance for losses 30 70
Recorded investment, Total 44 94
Unpaid principal balance 54 106
Allowance for losses on impaired loans 4 6
Average recorded investment $ 62 $ 92