Contractual interest rate for funds borrowed, under the debt agreement.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585

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The cash outflow for a borrowing having initial term of repayment within one year or the normal operating cycle, if longer.

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Financing arrangements (Debt Repayments) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Repayments of short-term debt	$ 605,000,000
Repayments of debt	4,405,000,000	$ 3,725,000,000	$ 2,400,000,000
2.125% notes due 2017 (2.125% 2017 Notes) [Member]
Debt Instrument [Line Items]
Repayments of debt	$ 1,250,000,000
Stated contractual interest rate on note	2.125%
Floating rate notes due 2017 [Member]
Debt Instrument [Line Items]
Repayments of debt	$ 600,000,000
1.25% notes due 2017 (1.25% 2017 Notes) [Member]
Debt Instrument [Line Items]
Repayments of debt	$ 850,000,000
Stated contractual interest rate on note	1.25%
5.85% notes due 2017 (5.85% 2017 Notes) [Member]
Debt Instrument [Line Items]
Repayments of debt	$ 1,100,000,000
Stated contractual interest rate on note	5.85%
Term loan due 2018 [Member]
Debt Instrument [Line Items]
Repayments of debt		1,975,000,000	$ 2,400,000,000
2.30% notes due 2016 (2.30% 2016 Notes) [Member]
Debt Instrument [Line Items]
Repayments of debt		$ 750,000,000
Stated contractual interest rate on note		2.30%
2.50% notes due 2016 (2.50% 2016 Notes) [Member]
Debt Instrument [Line Items]
Repayments of debt		$ 1,000,000,000.0
Stated contractual interest rate on note		2.50%