Stockholders' Equity, Reclassification out of accumulated other comprehensive income (loss) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Reclassification adjustments out of accumulated other comprehensive income (loss) [Line Items]
Amortization of prior service cost (benefit)	$ 1	$ 1	$ 2	$ 3
Amortization of actuarial (gain) loss	6	1	19	6
Other income (expense), net	10	3	35	20
Income (loss) from continuing operations before income taxes	1,676	1,694	5,150	4,618
Provision for (benefit from) income taxes	487	434	1,468	1,242
Net income attributable to the Company shareholders	1,185	1,258	3,681	3,381
Amounts reclassified out of accumulated other comprehensive income (loss) [Member]
Reclassification adjustments out of accumulated other comprehensive income (loss) [Line Items]
Income (loss) from continuing operations before income taxes	12	2	(127)	9
Provision for (benefit from) income taxes	2	1	6	2
Net income attributable to the Company shareholders	10	1	(133)	7
Defined pension and other postretirement benefit plans [Member] | Amounts reclassified out of accumulated other comprehensive income (loss) [Member]
Reclassification adjustments out of accumulated other comprehensive income (loss) [Line Items]
Amortization of prior service cost (benefit)	1	1	2	3
Amortization of actuarial (gain) loss	6	1	19	6
Financial derivatives [Member] | Cross-currency swaps [Member] | Amounts reclassified out of accumulated other comprehensive income (loss) [Member]
Reclassification adjustments out of accumulated other comprehensive income (loss) [Line Items]
Other income (expense), net	$ 5	$ 0	$ (148)	$ 0