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Benefit Plans (Movements in Other Comprehensive Earnings/Losses) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Amortization: |  |  |
Net loss | $ 214 | $ 296 | $ 187
Prior service cost/credit | (34) | (32) | (33)
Other expense (income): |  |  |
Net loss, other expense (income) | 9 | 8 |
Prior service cost/credit | (11) |  |
Deferred income taxes | (65) | (105) | (60)
Amounts reclassified to net earnings as components of net periodic benefit cost | 113 | 167 | 94
Other movements during the year: |  |  |
Net loss, Other movements during the year | (259) | (223) | (1,411)
Prior service cost/credit, Other movements during the year | 12 | 0 |
Deferred income taxes, Other movements during the year | 96 | 86 | 550
Other movements | (151) | (137) | (861)
Total movements in other comprehensive earnings/losses | (38) | 30 | (767)
Pension [Member] |  |  |
Amortization: |  |  |
Net loss | 171 | 234 | 147
Prior service cost/credit | 5 | 7 | 10
Other expense (income): |  |  |
Net loss, other expense (income) | 9 | 8 |
Prior service cost/credit | 2 |  |
Deferred income taxes | (69) | (96) | (61)
Amounts reclassified to net earnings as components of net periodic benefit cost | 118 | 153 | 96
Other movements during the year: |  |  |
Net loss, Other movements during the year | (232) | (410) | (1,093)
Prior service cost/credit, Other movements during the year | (4) | (6) |
Deferred income taxes, Other movements during the year | 92 | 160 | 425
Other movements | (144) | (256) | (668)
Total movements in other comprehensive earnings/losses | (26) | (103) | (572)
Postretirement Benefit Plan [Member] |  |  |
Amortization: |  |  |
Net loss | 25 | 43 | 22
Prior service cost/credit | (39) | (39) | (43)
Other expense (income): |  |  |
Net loss, other expense (income) | 0 | 0 |
Prior service cost/credit | (13) |  |
Deferred income taxes | 11 | (2) | 8
Amounts reclassified to net earnings as components of net periodic benefit cost | (16) | 2 | (13)
Other movements during the year: |  |  |
Net loss, Other movements during the year | (18) | 192 | (306)
Prior service cost/credit, Other movements during the year | 16 | 6 |
Deferred income taxes, Other movements during the year | 1 | (75) | 120
Other movements | (1) | 123 | (186)
Total movements in other comprehensive earnings/losses | (17) | 125 | (199)
Postemployment Benefit Plans [Member] |  |  |
Amortization: |  |  |
Net loss | 18 | 19 | 18
Prior service cost/credit | 0 | 0 | 0
Other expense (income): |  |  |
Net loss, other expense (income) | 0 | 0 |
Prior service cost/credit | 0 |  |
Deferred income taxes | (7) | (7) | (7)
Amounts reclassified to net earnings as components of net periodic benefit cost | 11 | 12 | 11
Other movements during the year: |  |  |
Net loss, Other movements during the year | (9) | (5) | (12)
Prior service cost/credit, Other movements during the year | 0 | 0 |
Deferred income taxes, Other movements during the year | 3 | 1 | 5
Other movements | (6) | (4) | (7)
Total movements in other comprehensive earnings/losses | $ 5 | $ 8 | $ 4

X
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- Definition Amount before tax of cost (credit) of benefit changes attributable to plan participants' prior service resulting from a plan amendment or plan initiation that has not been recognized in net periodic benefit cost (credit). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669646-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Prior Service Cost -URI http://asc.fasb.org/extlink&oid=49177896 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e637-108580 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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- Definition Amount before tax of reclassification adjustment from accumulated other comprehensive (income) loss for prior service cost (credit) related to pension and other postretirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669646-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e637-108580 + Details
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- Definition Amount after tax, before reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (i-k) -URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669646-108580 + Details
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- Definition Amount before tax of (increase) decrease in the value of the projected benefit obligation related to a change in an actuarial assumption and increase (decrease) in the value of the plan assets resulting from experience different from that assumed, that has not been recognized in net periodic benefit (cost) credit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e637-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669646-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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