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Guarantee of Securities of Subsidiaries Cash Flows (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Guarantor Obligations [Line Items] |  |  |
Net cash (used in) provided by operating activities | $ 5,043 | $ 4,601 | $ 4,758
Proceeds from the TMPL Sale, net of cash disposed | 2,998 | 0 | 0
Acquisitions of investments | (39) | (4) | (333)
Capital expenditures | (2,904) | (3,188) | (2,882)
Proceeds from sales of equity investments | 124 | 0 | 0
Proceeds from sale of equity interests in subsidiaries, net | 0 | 0 | 1,401
Sales of property, plant and equipment, investments and other net assets, net of removal costs | (20) | 118 | 330
Contributions to investments | (433) | (684) | (408)
Distributions from equity investments in excess of cumulative earnings | 237 | 374 | 231
Loans to related party | (31) | (23) |
Loans repayments from related parties |  |  | 35
Other, net | 0 | 4 | 1
Net Cash Used in Investing Activities | (68) | (3,403) | (1,625)
Issuances of debt | 14,751 | 8,868 | 8,629
Payments of debt | (14,591) | (11,064) | (10,060)
Debt issue costs | (42) | (70) | (19)
Cash dividends - common shares | (1,618) | (1,120) | (1,118)
Cash dividends - preferred shares | (156) | (156) | (154)
Repurchases of common shares | (273) | (250) | 0
Contributions from investment partner | 181 | 485 | 0
Contributions from noncontrolling interests - net proceeds from KML IPO | 0 | 1,245 | 0
Contributions from noncontrolling interests - net proceeds from KML preferred share issuances | 0 | 420 | 0
Contributions from noncontrolling interests - other | 19 | 12 | 117
Distributions to noncontrolling interests | (78) | (42) | (24)
Other, net | (17) | (9) | (8)
Net Cash Used in Financing Activities | (1,824) | (1,681) | (2,637)
Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Deposits | (146) | 22 | 2
Net increase (decrease) in Cash, Cash Equivalents and Restricted Deposits | 3,005 | (461) | 498
Cash, Cash Equivalents, and Restricted Deposits, beginning of period | 326 | 787 | 289
Cash, Cash Equivalents, and Restricted Deposits, end of period | 3,331 | 326 | 787
Parent Issuer and Guarantor |  |  |
Guarantor Obligations [Line Items] |  |  |
Net cash (used in) provided by operating activities | (2,758) | (3,184) | (3,981)
Proceeds from the TMPL Sale, net of cash disposed | 0 |  |
Acquisitions of investments | 0 | 0 | (2)
Capital expenditures | (24) | (23) | (27)
Proceeds from sales of equity investments | 0 |  |
Proceeds from sale of equity interests in subsidiaries, net |  |  | 0
Sales of property, plant and equipment, investments and other net assets, net of removal costs | 9 | 16 | 6
Contributions to investments | (12) | (237) | (343)
Distributions from equity investments in excess of cumulative earnings | 2,342 | 2,297 | 2,417
Funding to affiliates | (6,521) | (4,419) | (2,820)
Loans to related party | 0 | (23) |
Loans repayments from related parties |  |  | 0
Other, net |  | 0 | 0
Net Cash Used in Investing Activities | (4,206) | (2,389) | (769)
Issuances of debt | 14,143 | 8,609 | 8,255
Payments of debt | (12,640) | (9,288) | (7,322)
Debt issue costs | (35) | (12) | (16)
Cash dividends - common shares | (1,618) | (1,120) | (1,118)
Cash dividends - preferred shares | (156) | (156) | (154)
Repurchases of common shares | (273) | (250) |
Funding from affiliates | 7,560 | 7,327 | 5,461
Contributions from investment partner | 0 | 0 |
Contributions from parents, including net proceeds from KML IPO and preferred share issuance | 0 | 0 | 0
Contributions from noncontrolling interests - net proceeds from KML IPO |  | 4 |
Contributions from noncontrolling interests - net proceeds from KML preferred share issuances |  | 0 |
Contributions from noncontrolling interests - other | 0 | 0 | 0
Distributions to parents | 0 | 0 | 0
Distributions to noncontrolling interests | 0 | 0 | 0
Other, net | (12) | (9) | (8)
Net Cash Used in Financing Activities | 6,969 | 5,105 | 5,098
Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Deposits | 0 | 0 | 0
Net increase (decrease) in Cash, Cash Equivalents and Restricted Deposits | 5 | (468) | 348
Cash, Cash Equivalents, and Restricted Deposits, beginning of period | 3 | 471 | 123
Cash, Cash Equivalents, and Restricted Deposits, end of period | 8 | 3 | 471
Subsidiary Issuer and Guarantor - KMP |  |  |
Guarantor Obligations [Line Items] |  |  |
Net cash (used in) provided by operating activities | 3,879 | 3,911 | 4,943
Proceeds from the TMPL Sale, net of cash disposed | 0 |  |
Acquisitions of investments | 0 | 0 | 0
Capital expenditures | 0 | 0 | 0
Proceeds from sales of equity investments | 0 |  |
Proceeds from sale of equity interests in subsidiaries, net |  |  | 0
Sales of property, plant and equipment, investments and other net assets, net of removal costs | 0 | 0 | 0
Contributions to investments | 0 | 0 | 0
Distributions from equity investments in excess of cumulative earnings | 0 | 0 | 298
Funding to affiliates | (26) | 779 | (535)
Loans to related party | 0 | 0 |
Loans repayments from related parties |  |  | 0
Other, net |  | 1 | 0
Net Cash Used in Investing Activities | (26) | 780 | (237)
Issuances of debt | 0 | 0 | 0
Payments of debt | (975) | (600) | (500)
Debt issue costs | 0 | 0 | 0
Cash dividends - common shares | 0 | 0 | 0
Cash dividends - preferred shares | 0 | 0 | 0
Repurchases of common shares | 0 | 0 |
Funding from affiliates | 2,028 | 776 | 1,116
Contributions from investment partner | 0 | 0 |
Contributions from parents, including net proceeds from KML IPO and preferred share issuance | 0 | 0 | 0
Contributions from noncontrolling interests - net proceeds from KML IPO |  | 0 |
Contributions from noncontrolling interests - net proceeds from KML preferred share issuances |  | 0 |
Contributions from noncontrolling interests - other | 0 | 0 | 0
Distributions to parents | (4,907) | (4,902) | (5,286)
Distributions to noncontrolling interests | 0 | 0 | 0
Other, net | 0 | 0 | 0
Net Cash Used in Financing Activities | (3,854) | (4,726) | (4,670)
Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Deposits | 0 | 0 | 0
Net increase (decrease) in Cash, Cash Equivalents and Restricted Deposits | (1) | (35) | 36
Cash, Cash Equivalents, and Restricted Deposits, beginning of period | 1 | 36 | 0
Cash, Cash Equivalents, and Restricted Deposits, end of period | 0 | 1 | 36
Subsidiary Guarantors |  |  |
Guarantor Obligations [Line Items] |  |  |
Net cash (used in) provided by operating activities | 11,129 | 11,523 | 11,641
Proceeds from the TMPL Sale, net of cash disposed | 0 |  |
Acquisitions of investments | (39) | (4) | (331)
Capital expenditures | (1,995) | (2,390) | (2,258)
Proceeds from sales of equity investments | 124 |  |
Proceeds from sale of equity interests in subsidiaries, net |  |  | 1,401
Sales of property, plant and equipment, investments and other net assets, net of removal costs | (34) | 94 | 326
Contributions to investments | (413) | (435) | (54)
Distributions from equity investments in excess of cumulative earnings | 234 | 326 | 190
Funding to affiliates | (7,419) | (7,040) | (5,062)
Loans to related party | (31) | 0 |
Loans repayments from related parties |  |  | 35
Other, net |  | 4 | 3
Net Cash Used in Investing Activities | (9,573) | (9,445) | (5,750)
Issuances of debt | 0 | 0 | 374
Payments of debt | (784) | (897) | (2,227)
Debt issue costs | 0 | 0 | (2)
Cash dividends - common shares | 0 | 0 | 0
Cash dividends - preferred shares | 0 | 0 | 0
Repurchases of common shares | 0 | 0 |
Funding from affiliates | 4,542 | 3,797 | 1,959
Contributions from investment partner | 181 | 485 |
Contributions from parents, including net proceeds from KML IPO and preferred share issuance | 19 | 0 | 117
Contributions from noncontrolling interests - net proceeds from KML IPO |  | 0 |
Contributions from noncontrolling interests - net proceeds from KML preferred share issuances |  | 0 |
Contributions from noncontrolling interests - other | 0 | 0 | 0
Distributions to parents | (5,514) | (5,472) | (6,116)
Distributions to noncontrolling interests | 0 | 0 | 0
Other, net | 0 | 0 | 0
Net Cash Used in Financing Activities | (1,556) | (2,087) | (5,895)
Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Deposits | 0 | 0 | 0
Net increase (decrease) in Cash, Cash Equivalents and Restricted Deposits | 0 | (9) | (4)
Cash, Cash Equivalents, and Restricted Deposits, beginning of period | 0 | 9 | 13
Cash, Cash Equivalents, and Restricted Deposits, end of period | 0 | 0 | 9
Subsidiary Non-Guarantors |  |  |
Guarantor Obligations [Line Items] |  |  |
Net cash (used in) provided by operating activities | 1,117 | 1,121 | 885
Proceeds from the TMPL Sale, net of cash disposed | 2,998 |  |
Acquisitions of investments | 0 | 0 | 0
Capital expenditures | (885) | (775) | (597)
Proceeds from sales of equity investments | 0 |  |
Proceeds from sale of equity interests in subsidiaries, net |  |  | 0
Sales of property, plant and equipment, investments and other net assets, net of removal costs | 5 | 8 | (2)
Contributions to investments | (8) | (12) | (11)
Distributions from equity investments in excess of cumulative earnings | 1 | 0 | 0
Funding to affiliates | (1,003) | (1,028) | (727)
Loans to related party | 0 | 0 |
Loans repayments from related parties |  |  | 0
Other, net |  | (1) | (2)
Net Cash Used in Investing Activities | 1,108 | (1,808) | (1,339)
Issuances of debt | 608 | 259 | 0
Payments of debt | (192) | (279) | (11)
Debt issue costs | (7) | (58) | (1)
Cash dividends - common shares | 0 | 0 | 0
Cash dividends - preferred shares | 0 | 0 | 0
Repurchases of common shares | 0 | 0 |
Funding from affiliates | 839 | (192) | 608
Contributions from investment partner | 0 | 0 |
Contributions from parents, including net proceeds from KML IPO and preferred share issuance | 0 | 1,673 | 0
Contributions from noncontrolling interests - net proceeds from KML IPO |  | 0 |
Contributions from noncontrolling interests - net proceeds from KML preferred share issuances |  | 0 |
Contributions from noncontrolling interests - other | 0 | 0 | 0
Distributions to parents | (317) | (687) | (73)
Distributions to noncontrolling interests | 0 | 0 | 0
Other, net | (5) | 0 | 0
Net Cash Used in Financing Activities | 926 | 716 | 523
Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Deposits | (146) | 22 | 2
Net increase (decrease) in Cash, Cash Equivalents and Restricted Deposits | 3,005 | 51 | 71
Cash, Cash Equivalents, and Restricted Deposits, beginning of period | 323 | 272 | 201
Cash, Cash Equivalents, and Restricted Deposits, end of period | 3,328 | 323 | 272
Consolidated KMI |  |  |
Guarantor Obligations [Line Items] |  |  |
Net cash (used in) provided by operating activities | 5,043 | 4,601 | 4,758
Proceeds from the TMPL Sale, net of cash disposed | 2,998 |  |
Acquisitions of investments | (39) | (4) | (333)
Capital expenditures | (2,904) | (3,188) | (2,882)
Proceeds from sales of equity investments | 124 |  |
Proceeds from sale of equity interests in subsidiaries, net |  |  | 1,401
Sales of property, plant and equipment, investments and other net assets, net of removal costs | (20) | 118 | 330
Contributions to investments | (433) | (684) | (408)
Distributions from equity investments in excess of cumulative earnings | 237 | 374 | 231
Funding to affiliates | 0 | 0 | 0
Loans to related party | (31) | (23) |
Loans repayments from related parties |  |  | 35
Other, net |  | 4 | 1
Net Cash Used in Investing Activities | (68) | (3,403) | (1,625)
Issuances of debt | 14,751 | 8,868 | 8,629
Payments of debt | (14,591) | (11,064) | (10,060)
Debt issue costs | (42) | (70) | (19)
Cash dividends - common shares | (1,618) | (1,120) | (1,118)
Cash dividends - preferred shares | (156) | (156) | (154)
Repurchases of common shares | (273) | (250) |
Funding from affiliates | 0 | 0 | 0
Contributions from investment partner | 181 | 485 |
Contributions from parents, including net proceeds from KML IPO and preferred share issuance | 0 | 0 | 0
Contributions from noncontrolling interests - net proceeds from KML IPO |  | 1,245 |
Contributions from noncontrolling interests - net proceeds from KML preferred share issuances |  | 420 |
Contributions from noncontrolling interests - other | 19 | 12 | 117
Distributions to parents | 0 | 0 | 0
Distributions to noncontrolling interests | (78) | (42) | (24)
Other, net | (17) | (9) | (8)
Net Cash Used in Financing Activities | (1,824) | (1,681) | (2,637)
Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Deposits | (146) | 22 | 2
Net increase (decrease) in Cash, Cash Equivalents and Restricted Deposits | 3,005 | (461) | 498
Cash, Cash Equivalents, and Restricted Deposits, beginning of period | 326 | 787 | 289
Cash, Cash Equivalents, and Restricted Deposits, end of period | 3,331 | 326 | 787
Consolidating Adjustments |  |  |
Guarantor Obligations [Line Items] |  |  |
Net cash (used in) provided by operating activities | (8,324) | (8,770) | (8,730)
Proceeds from the TMPL Sale, net of cash disposed | 0 |  |
Acquisitions of investments | 0 | 0 | 0
Capital expenditures | 0 | 0 | 0
Proceeds from sales of equity investments | 0 |  |
Proceeds from sale of equity interests in subsidiaries, net |  |  | 0
Sales of property, plant and equipment, investments and other net assets, net of removal costs | 0 | 0 | 0
Contributions to investments | 0 | 0 | 0
Distributions from equity investments in excess of cumulative earnings | (2,340) | (2,249) | (2,674)
Funding to affiliates | 14,969 | 11,708 | 9,144
Loans to related party | 0 | 0 |
Loans repayments from related parties |  |  | 0
Other, net |  | 0 | 0
Net Cash Used in Investing Activities | 12,629 | 9,459 | 6,470
Issuances of debt | 0 | 0 | 0
Payments of debt | 0 | 0 | 0
Debt issue costs | 0 | 0 | 0
Cash dividends - common shares | 0 | 0 | 0
Cash dividends - preferred shares | 0 | 0 | 0
Repurchases of common shares | 0 | 0 |
Funding from affiliates | (14,969) | (11,708) | (9,144)
Contributions from investment partner | 0 | 0 |
Contributions from parents, including net proceeds from KML IPO and preferred share issuance | (19) | (1,673) | (117)
Contributions from noncontrolling interests - net proceeds from KML IPO |  | 1,241 |
Contributions from noncontrolling interests - net proceeds from KML preferred share issuances |  | 420 |
Contributions from noncontrolling interests - other | 19 | 12 | 117
Distributions to parents | 10,738 | 11,061 | 11,475
Distributions to noncontrolling interests | (78) | (42) | (24)
Other, net | 0 | 0 | 0
Net Cash Used in Financing Activities | (4,309) | (689) | 2,307
Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Deposits | 0 | 0 | 0
Net increase (decrease) in Cash, Cash Equivalents and Restricted Deposits | (4) | 0 | 47
Cash, Cash Equivalents, and Restricted Deposits, beginning of period | (1) | (1) | (48)
Cash, Cash Equivalents, and Restricted Deposits, end of period | $ (5) | $ (1) | $ (1)

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- Definition Amount of cash outflow in the form of ordinary dividends to preferred shareholders of the parent entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585 + Details
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- Definition Cash outflow in the form of ordinary dividends to common shareholders, preferred shareholders and noncontrolling interests, generally out of earnings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585 + Details
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- Definition The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585 + Details
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- Definition The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585 + Details
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- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585 + Details
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- Definition The cash outflow associated with extending a long-term loan to a related party. Alternate caption: Payments for Advances to Affiliates. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585 + Details
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- Definition The cash inflow from parent as a source of financing that is recorded as additional paid in capital. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3255-108585 + Details
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- Definition This element represents the cash inflow during the period from the sale of a component of the entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585 + Details
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- Definition The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3255-108585 + Details
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