For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Amount of contributions made by the employer to defined benefit plans.

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The total amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments.

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Target allocation of investments of this type to total plan assets presented on a weighted average basis.

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Amount of employer's best estimate of contributions expected to be paid to the plan in the current remaining fiscal period.

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Retirement Benefits (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Mar. 31, 2015	Jun. 30, 2016	Jun. 30, 2015
Defined Benefit Plan Disclosure [Line Items]
Contributions to U.S. non qualified and non-U.S. Pension Plan				$ 103
Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit credit	$ (2)	$ (3)	$ 125	(4)	$ 122
Non-U.S. Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit credit	37	15		70	29
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit credit	$ 21	$ (31)		39	$ (62)
Expected contribution during remainder of 2016				$ 114
Unites States \| Equity Funds
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation U.S. Plan				64.00%
Actual asset allocation percentage of equity	62.00%			62.00%
Unites States \| Fixed Income Funds
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation U.S. Plan				36.00%
Actual asset allocation percentage of equity	38.00%			38.00%
United Kingdom \| Equity Funds
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation U.S. Plan				48.00%
Actual asset allocation percentage of equity	46.00%			46.00%
United Kingdom \| Fixed Income Funds
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation U.S. Plan				52.00%
Actual asset allocation percentage of equity	54.00%			54.00%
United Kingdom \| Geographic Concentration Risk \| Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Concentration risk percentage				83.00%