Borrowings and Lines of Credit (Tables)

12 Months Ended

Dec. 31, 2017

Debt Disclosure [Abstract]

Short-term Debt [Table Text Block]

(dollars in millions)	2017		2016
Short-term borrowings:
Commercial paper	$	300	$	522
Other borrowings	92		79
Total short-term borrowings	$	392	$	601

Schedule of Weighted average interest rates [Table Text Block]

The weighted-average interest rates applicable to short-term borrowings and total debt were as follows:

	2017		2016
Average interest expense rate - average outstanding borrowings during the year:
Short-term borrowings	1.1	%	1.3	%
Total debt	3.5	%	4.1	%
Average interest expense rate - outstanding borrowings as of December 31:
Short-term borrowings	2.3	%	0.6	%
Total debt	3.5	%	3.7	%

Long-term Debt [Table Text Block]

(dollars in millions)	2017			2016
1.800% notes due 2017 1	—			1,500
6.800% notes due 2018	99			99
EURIBOR plus 0.80% floating rate notes due 2018 (€750 million principal value) 2	890			783
1.778% junior subordinated notes due 2018	1,100			1,100
LIBOR plus 0.350% floating rate notes due 2019 3	350			350
1.500% notes due 2019 1	650			650
EURIBOR plus 0.15% floating rate notes due 2019 (€750 million principal value) 2	890			—
8.875% notes due 2019	271			271
4.875% notes due 2020 1	171			171
4.500% notes due 2020 1	1,250			1,250
1.900% notes due 2020 1	1,000			—
8.750% notes due 2021	250			250
1.950% notes due 2021 1	750			750
1.125% notes due 2021 (€950 million principal value) 1	1,127			992
2.300% notes due 2022 1	500			—
3.100% notes due 2022 1	2,300			2,300
1.250% notes due 2023 (€750 million principal value) 1	890			783
2.800% notes due 2024 1	800			—
1.875% notes due 2026 (€500 million principal value) 1	593			522
2.650% notes due 2026 1	1,150			1,150
3.125% notes due 2027 1	1,100			—
7.100% notes due 2027	141			141
6.700% notes due 2028	400			400
7.500% notes due 2029 1	550			550
5.400% notes due 2035 1	600			600
6.050% notes due 2036 1	600			600
6.800% notes due 2036 1	134			134
7.000% notes due 2038	159			159
6.125% notes due 2038 1	1,000			1,000
5.700% notes due 2040 1	1,000			1,000
4.500% notes due 2042 1	3,500			3,500
4.150% notes due 2045 1	850			850
3.750% notes due 2046 1	1,100			1,100
4.050% notes due 2047 1	600			—
Project financing obligations	158			155
Other (including capitalized leases)	195			189
Total principal long-term debt	27,118			23,299
Other (fair market value adjustments, discounts and debt issuance costs)	(25		)	1
Total long-term debt	27,093			23,300
Less: current portion	2,104			1,603
Long-term debt, net of current portion	$	24,989		$	21,697

1 We may redeem these notes at our option pursuant to their terms.

2 The three-month EURIBOR rate as of December 29, 2017 was approximately -0.329%. The notes may be redeemed at our option in whole, but not in part, at any time in the event of certain developments affecting U.S. taxation.

3 The three-month LIBOR rate as of December 29, 2017 was approximately 1.694%.

Schedule of Principal Payments on Long-term Debt [Table Text Block]

(dollars in millions)
2018	$	2,104
2019	2,271
2020	2,479
2021	2,175
2022	2,804
Thereafter	15,285
Total	$	27,118