Short-Term and Long-Term Borrowings (Details) $ in Millions	3 Months Ended	36 Months Ended
	Mar. 31, 2017 USD ($)	Mar. 22, 2019	Jan. 31, 2017 USD ($)	Mar. 22, 2016 USD ($) borrowings
Repurchase Agreements [Member]
Schedule of Debt [Line Items]
Line of Credit Facility, maximum borrowing capacity			$ 1,300
Portion of outstanding borrowing amounts required as collateral			105.00%
Repurchase Agreements [Member] | Accounts and Notes Receivable [Member]
Schedule of Debt [Line Items]
Line of Credit Facility, amount pledged as collateral	$ 315
Repurchase Agreements [Member] | Short-term Borrowings [Member]
Schedule of Debt [Line Items]
Line of Credit Facility, outstanding borrowings, current	300
Term Loan Facility due 2019 [Member]
Schedule of Debt [Line Items]
Line of Credit Facility, maximum borrowing capacity				$ 4,500
Number of borrowings permitted | borrowings				7
Line of Credit Facility, expiration period		3 years
Line of Credit Facility, outstanding borrowings, noncurrent	500
Line of Credit Facility, remaining borrowing capacity	$ 4,000
London Interbank Offered Rate (LIBOR) [Member] | Repurchase Agreements [Member]
Schedule of Debt [Line Items]
Debt Instrument, basis spread on variable rate	0.75%