Pension And Other Postretirement Benefits (Tables)

12 Months Ended

Dec. 31, 2015

Pension And Other Postretirement Benefits [Abstract]

Change In Benefit Obligation Of Pension And Other Postretirement Benefits

		Pension Benefits				Other Postretirement
		U.S.		Non-U.S.		Benefits
		2015	2014	2015	2014	2015	2014
		(percent)
Weighted-average assumptions used to determine
	benefit obligations at December 31
	Discount rate	4.25	4.00	3.60	3.10	4.25	4.00
	Long-term rate of compensation increase	5.75	5.75	4.80	5.30	5.75	5.75

		(millions of dollars)
Change in benefit obligation
	Benefit obligation at January 1	20,529	17,304	30,047	27,357	9,436	7,868
	Service cost	864	677	689	590	170	140
	Interest cost	785	807	850	1,138	346	383
	Actuarial loss/(gain)	(545)	3,192	(1,517)	4,929	(617)	1,522
	Benefits paid (1) (2)	(2,050)	(1,427)	(1,287)	(1,366)	(482)	(525)
	Foreign exchange rate changes	-	-	(3,242)	(2,540)	(106)	(48)
	Amendments, divestments and other	-	(24)	(423)	(61)	(465)	96
Benefit obligation at December 31		19,583	20,529	25,117	30,047	8,282	9,436
Accumulated benefit obligation at December 31		15,666	16,385	22,362	26,318	-	-

(1) Benefit payments for funded and unfunded plans.

(2) For 2015 and 2014, other postretirement benefits paid are net of $15 million and $21 million of Medicare subsidy receipts, respectively.

Change In Plan Assets Of Pension And Other Postretirement Benefits

		Pension Benefits				Other Postretirement
		U.S.		Non-U.S.		Benefits
		2015	2014	2015	2014	2015	2014
		(millions of dollars)
Change in plan assets
	Fair value at January 1	12,915	11,190	20,095	19,283	468	620
	Actual return on plan assets	(307)	1,497	918	3,153	-	41
	Foreign exchange rate changes	-	-	(2,109)	(1,738)	-	-
	Company contribution	-	1,476	515	554	42	31
	Benefits paid (1)	(1,623)	(1,248)	(890)	(912)	(96)	(224)
	Other	-	-	(112)	(245)	-	-
Fair value at December 31		10,985	12,915	18,417	20,095	414	468

(1) Benefit payments for funded plans.

Summary Of Assets In Excess Of/(Less Than) Benefit Obligation

		Pension Benefits
		U.S.		Non-U.S.
		2015	2014	2015	2014
		(millions of dollars)
Assets in excess of/(less than) benefit obligation
	Balance at December 31
	Funded plans	(5,782)	(4,590)	(588)	(2,113)
	Unfunded plans	(2,816)	(3,024)	(6,112)	(7,839)
Total		(8,598)	(7,614)	(6,700)	(9,952)

Amounts Recorded In Balance Sheet And Other Comprehensive Income

		Pension Benefits				Other Postretirement
		U.S.		Non-U.S.		Benefits
		2015	2014	2015	2014	2015	2014
		(millions of dollars)
Assets in excess of/(less than) benefit obligation
	Balance at December 31 (1)	(8,598)	(7,614)	(6,700)	(9,952)	(7,868)	(8,968)

Amounts recorded in the consolidated balance
	sheet consist of:
	Other assets	-	-	454	302	-	-
	Current liabilities	(311)	(340)	(299)	(325)	(363)	(369)
	Postretirement benefits reserves	(8,287)	(7,274)	(6,855)	(9,929)	(7,505)	(8,599)
Total recorded		(8,598)	(7,614)	(6,700)	(9,952)	(7,868)	(8,968)

Amounts recorded in accumulated other
	comprehensive income consist of:
	Net actuarial loss/(gain)	6,138	6,589	6,413	9,642	2,171	2,997
	Prior service cost	21	27	(83)	429	(460)	51
Total recorded in accumulated other
	comprehensive income	6,159	6,616	6,330	10,071	1,711	3,048

(1) Fair value of assets less benefit obligation shown on the preceding page.

Schedule Of Assumptions, Components Of Benefit Cost And Amounts Recorded In Accumulated Other Comprehensive Income For Pension And Other Postretirement Benefits

									Other
			Pension Benefits						Postretirement
			U.S.			Non-U.S.			Benefits
			2015	2014	2013	2015	2014	2013	2015	2014	2013
Weighted-average assumptions used to
	determine net periodic benefit cost for
	years ended December 31	(percent)
	Discount rate		4.00	5.00	4.00	3.10	4.30	3.80	4.00	5.00	4.00
	Long-term rate of return on funded assets		7.00	7.25	7.25	5.90	6.30	6.40	7.00	7.25	7.25
	Long-term rate of compensation increase		5.75	5.75	5.75	5.30	5.40	5.50	5.75	5.75	5.75

Components of net periodic benefit cost			(millions of dollars)
	Service cost		864	677	801	689	590	697	170	140	176
	Interest cost		785	807	749	850	1,138	1,076	346	383	352
	Expected return on plan assets		(830)	(799)	(835)	(1,094)	(1,193)	(1,128)	(28)	(37)	(41)
	Amortization of actuarial loss/(gain)		544	409	646	730	628	852	206	116	228
	Amortization of prior service cost		6	8	7	87	120	117	(24)	14	21
	Net pension enhancement and
	curtailment/settlement cost		499	276	723	22	-	22	-	-	-
Net periodic benefit cost			1,868	1,378	2,091	1,284	1,283	1,636	670	616	736



Changes in amounts recorded in accumulated
	other comprehensive income:
	Net actuarial loss/(gain)		592	2,494	(1,302)	(1,375)	2,969	(1,938)	(589)	1,518	(1,290)
	Amortization of actuarial (loss)/gain		(1,043)	(685)	(1,369)	(752)	(628)	(874)	(206)	(116)	(228)
	Prior service cost/(credit)		-	(25)	-	(401)	(70)	30	(535)	-	-
	Amortization of prior service (cost)/credit		(6)	(8)	(7)	(87)	(120)	(117)	24	(14)	(21)
	Foreign exchange rate changes		-	-	-	(1,126)	(688)	(155)	(31)	(8)	(10)
Total recorded in other comprehensive income			(457)	1,776	(2,678)	(3,741)	1,463	(3,054)	(1,337)	1,380	(1,549)
Total recorded in net periodic benefit cost and
	other comprehensive income, before tax		1,411	3,154	(587)	(2,457)	2,746	(1,418)	(667)	1,996	(813)

Summary Of Change In Accumulated Other Comprehensive Income

		Total Pension and
		Other Postretirement Benefits
		2015	2014	2013
		(millions of dollars)
(Charge)/credit to other comprehensive income, before tax
	U.S. pension	457	(1,776)	2,678
	Non-U.S. pension	3,741	(1,463)	3,054
	Other postretirement benefits	1,337	(1,380)	1,549
Total (charge)/credit to other comprehensive income, before tax		5,535	(4,619)	7,281
(Charge)/credit to income tax (see Note 4)		(1,810)	1,549	(2,336)
(Charge)/credit to investment in equity companies		81	(81)	49
(Charge)/credit to other comprehensive income including noncontrolling
	interests, after tax	3,806	(3,151)	4,994
Charge/(credit) to equity of noncontrolling interests		(202)	85	(279)
(Charge)/credit to other comprehensive income attributable to ExxonMobil		3,604	(3,066)	4,715

Fair Value Of The Benefit Plan Assets (Pension)

			U.S. Pension							Non-U.S. Pension
			Fair Value Measurement							Fair Value Measurement
			at December 31, 2015, Using:							at December 31, 2015, Using:
				Level 1	Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
				(millions of dollars)
Asset category:
	Equity securities
		U.S.		-	1,992	(1)	-		1,992		-		3,179	(1)	-		3,179
		Non-U.S.		-	1,775	(1)	-		1,775		179	(2)	3,429	(1)	-		3,608
	Private equity			-	-		595	(3)	595		-		-		581	(3)	581
	Debt securities
		Corporate		-	4,161	(4)	-		4,161		-		2,561	(4)	-		2,561
		Government		-	2,394	(4)	-		2,394		243	(5)	8,125	(4)	-		8,368
		Asset-backed		-	3	(4)	-		3		-		71	(4)	-		71
	Real estate funds			-	-		-		-		-		-		-		-
	Cash			-	50	(6)	-		50		11		12	(7)	-		23
Total at fair value				-	10,375		595		10,970		433		17,377		581		18,391
	Insurance contracts
		at contract value							15								26
Total plan assets									10,985								18,417

(1) For U.S. and non-U.S. equity securities held in the form of fund units that are redeemable at the measurement date, the unit value is treated as a Level 2 input. The fair value of the securities owned by the funds is based on observable quoted prices on active exchanges, which are Level 1 inputs.

(2) For non-U.S. equity securities held in separate accounts, fair value is based on observable quoted prices on active exchanges.

(3) For private equity, fair value is generally established by using revenue or earnings multiples or other relevant market data including Initial Public Offerings.

(4) For corporate, government and asset-backed debt securities, fair value is based on observable inputs of comparable market transactions.

(5) For corporate and government debt securities that are traded on active exchanges, fair value is based on observable quoted prices.

(6) For cash balances held in the form of short-term fund units that are redeemable at the measurement date, the fair value is treated as a Level 2 input.

(7) For cash balances that are subject to withdrawal penalties or other adjustments, the fair value is treated as a Level 2 input.

			U.S. Pension							Non-U.S. Pension
			Fair Value Measurement							Fair Value Measurement
			at December 31, 2014, Using:							at December 31, 2014, Using:
				Level 1	Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
			(millions of dollars)
Asset category:
	Equity securities
		U.S.		-	2,331	(1)	-		2,331		-		3,284	(1)	-		3,284
		Non-U.S.		-	2,144	(1)	-		2,144		229	(2)	3,776	(1)	-		4,005
	Private equity			-	-		562	(3)	562		-		-		535	(3)	535
	Debt securities
		Corporate		-	4,841	(4)	-		4,841		-		2,686	(4)	-		2,686
		Government		-	2,890	(4)	-		2,890		249	(5)	9,050	(4)	-		9,299
		Asset-backed		-	5	(4)	-		5		-		146	(4)	-		146
	Real estate funds			-	-		-		-		-		-		57	(6)	57
	Cash			-	131	(7)	-		131		25		31	(8)	-		56
Total at fair value				-	12,342		562		12,904		503		18,973		592		20,068
	Insurance contracts
		at contract value							11								27
Total plan assets									12,915								20,095

(2) For non-U.S. equity securities held in separate accounts, fair value is based on observable quoted prices on active exchanges.

(3) For private equity, fair value is generally established by using revenue or earnings multiples or other relevant market data including Initial Public Offerings.

(4) For corporate, government and asset-backed debt securities, fair value is based on observable inputs of comparable market transactions.

(5) For corporate and government debt securities that are traded on active exchanges, fair value is based on observable quoted prices.

(6) For real estate funds, fair value is based on appraised values developed using comparable market transactions.

(7) For cash balances held in the form of short-term fund units that are redeemable at the measurement date, the fair value is treated as a Level 2 input.

(8) For cash balances that are subject to withdrawal penalties or other adjustments, the fair value is treated as a Level 2 input.

Fair Value Of The Benefit Plan Assets (Other Postretirement)

			Other Postretirement
				Fair Value Measurement
			at December 31, 2015, Using:
				Level 1	Level 2		Level 3	Total
				(millions of dollars)
Asset category:
	Equity securities
		U.S.		-	96	(1)	-	96
		Non-U.S.		-	67	(1)	-	67
	Private equity			-	-		-	-
	Debt securities
		Corporate		-	79	(2)	-	79
		Government		-	170	(2)	-	170
		Asset-backed		-	1	(2)	-	1
	Cash			-	1		-	1
Total at fair value				-	414		-	414

(2) For corporate, government and asset-backed debt securities, fair value is based on observable inputs of comparable market transactions.

			Other Postretirement
			Fair Value Measurement
			at December 31, 2014, Using:
				Level 1	Level 2		Level 3		Total
			(millions of dollars)
Asset category:
	Equity securities
		U.S.		-	106	(1)	-		106
		Non-U.S.		-	75	(1)	-		75
	Private equity			-	-		2	(2)	2
	Debt securities
		Corporate		-	103	(3)	-		103
		Government		-	171	(3)	-		171
		Asset-backed		-	9	(3)	-		9
	Cash			-	2		-		2
Total at fair value				-	466		2		468

(2) For private equity, fair value is generally established by using revenue or earnings multiples or other relevant market data including Initial Public Offerings.

(3) For corporate, government and asset-backed debt securities, fair value is based on observable inputs of comparable market transactions.

Change In Fair Value Of Level 3 Assets

	2015
	Pension			Other
	U.S.	Non-U.S.		Postretirement

	Private	Private	Real	Private
	Equity	Equity	Estate	Equity
	(millions of dollars)

Fair value at January 1	562	535	57	2
Net realized gains/(losses)	1	26	(5)	-
Net unrealized gains/(losses)	106	64	-	-
Net purchases/(sales)	(74)	(44)	(52)	(2)
Fair value at December 31	595	581	-	-

	2014
	Pension			Other
	U.S.	Non-U.S.		Postretirement
	Private	Private	Real	Private
	Equity	Equity	Estate	Equity
	(millions of dollars)

Fair value at January 1	523	502	136	9
Net realized gains/(losses)	2	23	(17)	-
Net unrealized gains/(losses)	89	31	8	-
Net purchases/(sales)	(52)	(21)	(70)	(7)
Fair value at December 31	562	535	57	2

Pension Plans With Accumulated Benefit Obligation In Excess Of Plan Assets

		Pension Benefits
		U.S.			Non-U.S.
			2015	2014		2015	2014
		(millions of dollars)
For funded pension plans with an accumulated benefit obligation
	in excess of plan assets:
	Projected benefit obligation		16,767	17,505		1,827	5,031
	Accumulated benefit obligation		13,913	14,493		1,373	4,590
	Fair value of plan assets		10,985	12,915		1,299	3,890

For unfunded pension plans:
	Projected benefit obligation		2,816	3,024		6,112	7,839
	Accumulated benefit obligation		1,753	1,892		5,290	6,573

Estimated Next Year Amortization

					Other
			Pension Benefits		Postretirement
			U.S.	Non-U.S.	Benefits
		(millions of dollars)
Estimated 2016 amortization from accumulated other comprehensive income:
	Net actuarial loss/(gain) (1)		930	543		152
	Prior service cost (2)		6	55		(30)

(1) The Corporation amortizes the net balance of actuarial losses/(gains) as a component of net periodic benefit cost over the average remaining service period of active plan participants.

(2) The Corporation amortizes prior service cost on a straight-line basis as permitted under authoritative guidance for defined benefit pension and other postretirement benefit plans.

Expected Contributions and Benefit Payments for Pension Benefits And Other Postretirement Benefits

		Pension Benefits		Other Postretirement Benefits
					Medicare
		U.S.	Non-U.S.	Gross	Subsidy Receipt
		(millions of dollars)

Contributions expected in 2016		2,000	525	-		-
Benefit payments expected in:
	2016	1,548	1,145	457		24
	2017	1,491	1,128	470		25
	2018	1,411	1,178	481		26
	2019	1,382	1,193	490		28
	2020	1,342	1,227	497		29
	2021 - 2025	6,594	6,359	2,518		170