v3.3.1.900

Retirement Benefits Plans - Fair Value of Pension Plan Assets (Details 11) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	$ 4,406	$ 4,621
United States pension plans percentage of worldwide pension assets	67.00%
United Kingdom pension plans percentage of worldwide pension assets	27.00%
United States pension plans' target allocation of United States equities	33.00%
United States pension plans' target allocation of non-United States equities	32.00%
United States pension plans' target allocation of real estate	8.00%
United State pension plans' target allocation of debt securities	22.00%
United States pension plans' target allocation of other, including hedge funds and cash equivalents	5.00%
United Kingdom pension plans' target allocation of equities	65.00%
Quoted prices in active markets for identical assets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	$ 513	513
Other observable inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	3,708	3,988
Unobservable inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	185	120
Non-United States Equity and Global Equities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	1,347	1,458
Non-United States Equity and Global Equities [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0	0
Non-United States Equity and Global Equities [Member] | Other observable inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	1,347	1,458
Non-United States Equity and Global Equities [Member] | Unobservable inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0	0
United States Equity [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	953	1,005
United States Equity [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0	0
United States Equity [Member] | Other observable inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	953	1,005
United States Equity [Member] | Unobservable inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0	0
Fixed Income [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	514	646
Fixed Income [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0	0
Fixed Income [Member] | Other observable inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	514	646
Fixed Income [Member] | Unobservable inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0	0
Exchange Traded Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	158	138
Exchange Traded Funds [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0	0
Exchange Traded Funds [Member] | Other observable inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	158	138
Exchange Traded Funds [Member] | Unobservable inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0	0
Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	357	398
Fixed Income Securities [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0	0
Fixed Income Securities [Member] | Other observable inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	357	398
Fixed Income Securities [Member] | Unobservable inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0	0
United States treasuries [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	105	106
United States treasuries [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	105	106
United States treasuries [Member] | Other observable inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0	0
United States treasuries [Member] | Unobservable inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0	0
Bank Loans [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	136	128
Bank Loans [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0	0
Bank Loans [Member] | Other observable inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	136	128
Bank Loans [Member] | Unobservable inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0	0
Real Estate Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	251	263
Real Estate Securities [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	244	257
Real Estate Securities [Member] | Other observable inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0	0
Real Estate Securities [Member] | Unobservable inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	7	6
Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	98	92
Equity Securities [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	98	92
Equity Securities [Member] | Other observable inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0	0
Equity Securities [Member] | Unobservable inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0	0
Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	246	218
Cash Equivalents [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	17	8
Cash Equivalents [Member] | Other observable inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	229	210
Cash Equivalents [Member] | Unobservable inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0	0
Hedge Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	92	54
Hedge Funds [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0	0
Hedge Funds [Member] | Other observable inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0	0
Hedge Funds [Member] | Unobservable inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	92	54
Exchange Traded Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	49	50
Exchange Traded Funds [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	49	50
Exchange Traded Funds [Member] | Other observable inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0	0
Exchange Traded Funds [Member] | Unobservable inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0	0
Other Pension Plan Asset [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	100	65
Other Pension Plan Asset [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	0	0
Other Pension Plan Asset [Member] | Other observable inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	14	5
Other Pension Plan Asset [Member] | Unobservable inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Total pension plan assets	$ 86	$ 60

X

- Definition

Defined Benefit Plan, Target Allocation of Debt Securities: Target allocation percentage of investments in debt securities to total plan assets presented on a weighted-average basis as of the measurement date of the latest statement of financial position.

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Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 30
-Section 35
-Paragraph 50
-URI http://asc.fasb.org/extlink&oid=49178875&loc=d3e12355-114930

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
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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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (c)(i)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e2446-114920

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-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

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