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Restructuring and Other Costs (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2017 | Dec. 31, 2016
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Charges | $ 52 |
Cost of Sales [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Charges | 21 |
Selling, General and Administrative Expenses [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Charges | 31 |
Current Year Actions [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Charges | 24 |
Restructuring Reserve | 16 |
Net pre-tax restructuring costs (reversals) | 24 |
Utilization and foreign exchange | 8 |
Expected Costs | 42 |
Remaining Costs | 18 |
Current Year Actions [Member] | Cost of Sales [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Charges | 10 |
Current Year Actions [Member] | Selling, General and Administrative Expenses [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Charges | 14 |
Current Year Actions [Member] | Severance [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Reserve | 16 |
Net pre-tax restructuring costs (reversals) | 21 |
Utilization and foreign exchange | 5 |
Current Year Actions [Member] | Facility Exit, Lease Termination and Other Costs |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Reserve | 0 |
Net pre-tax restructuring costs (reversals) | 3 |
Utilization and foreign exchange | 3 |
Prior Year Actions [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Charges | 22 |
Restructuring Reserve | 103 | $ 109
Net pre-tax restructuring costs (reversals) | 22 | 242
Utilization and foreign exchange | 28 |
Expected Costs | 346 |
Remaining Costs | 82 |
Prior Year Actions [Member] | Cost of Sales [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Charges | 5 |
Prior Year Actions [Member] | Selling, General and Administrative Expenses [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Charges | 17 |
Prior Year Actions [Member] | Severance [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Reserve | 56 | 63
Net pre-tax restructuring costs (reversals) | 15 |
Utilization and foreign exchange | 22 |
Prior Year Actions [Member] | Facility Exit, Lease Termination and Other Costs |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Reserve | 47 | 46
Net pre-tax restructuring costs (reversals) | 7 |
Utilization and foreign exchange | 6 |
Two Years Prior Actions [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Reserve | 57 |
Otis [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Charges | 5 |
Otis [Member] | Current Year Actions [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Net pre-tax restructuring costs (reversals) | 2 |
Expected Costs | 5 |
Remaining Costs | 3 |
Otis [Member] | Prior Year Actions [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Net pre-tax restructuring costs (reversals) | 3 | 48
Expected Costs | 58 |
Remaining Costs | 7 |
UTC Climate, Controls & Security [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Charges | 23 |
UTC Climate, Controls & Security [Member] | Current Year Actions [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Net pre-tax restructuring costs (reversals) | 12 |
Expected Costs | 21 |
Remaining Costs | 9 |
UTC Climate, Controls & Security [Member] | Prior Year Actions [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Net pre-tax restructuring costs (reversals) | 6 | 45
Expected Costs | 85 |
Remaining Costs | 34 |
Pratt & Whitney [Member] | Prior Year Actions [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Net pre-tax restructuring costs (reversals) | 0 | 118
Expected Costs | 118 |
Remaining Costs | 0 |
UTC Aerospace Systems [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Charges | 23 |
UTC Aerospace Systems [Member] | Current Year Actions [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Net pre-tax restructuring costs (reversals) | 9 |
Expected Costs | 15 |
Remaining Costs | 6 |
UTC Aerospace Systems [Member] | Prior Year Actions [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Net pre-tax restructuring costs (reversals) | 13 | $ 31
Expected Costs | 85 |
Remaining Costs | 41 |
Eliminations and other [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Charges | 1 |
Eliminations and other [Member] | Current Year Actions [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Net pre-tax restructuring costs (reversals) | (1) |
Expected Costs | 1 |
Remaining Costs | $ 0 |

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- Definition Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 + Details
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