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PARTNERSHIP CAPITAL - Additional Information (Details) |  |  |  |  | 1 Months Ended | 2 Months Ended | 12 Months Ended |  |  |  |  |  |
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Feb. 25, 2022 shares | Jan. 21, 2022 USD ($) | Jan. 21, 2021 USD ($) $ / shares shares | Sep. 21, 2020 USD ($) $ / shares shares | Nov. 30, 2021 USD ($) shares | Oct. 31, 2021 USD ($) | Jul. 31, 2019 USD ($) $ / shares shares | Sep. 30, 2021 USD ($) | Dec. 31, 2021 USD ($) day $ / shares shares | Dec. 31, 2020 USD ($) $ / shares shares | Dec. 31, 2019 USD ($) $ / shares shares | Mar. 31, 2022 $ / shares | Nov. 01, 2021 $ / shares shares | Oct. 01, 2021 shares | Aug. 01, 2021 shares | Apr. 21, 2021 | Mar. 31, 2020 shares
Schedule of Partnership Units [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares issued, price per share (usd per share) | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 62.70 |  |  |  |
Partnership units issued, net of costs and repurchases |  |  |  |  |  |  |  |  |  | $ 1,073,000,000 |  | $ 9,000,000 |  | $ 781,000,000 |  |  |  |  |  |
Share issue related cost |  |  |  |  |  | $ 6,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repurchased and cancelled |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 29,000,000 |  |  |  |  |  |
Volume weighted average of trading price, number of trading days | day |  |  |  |  |  |  |  |  |  | 5 |  |  |  |  |  |  |  |  |  |
Basic earnings (loss) per share (in dollars per unit) | $ / shares | [1] |  |  |  |  |  |  |  |  | $ 1.74 |  | $ 0.35 |  | $ 0.06 |  |  |  |  |  |
Diluted earnings (loss) per share (in dollars per unit) | $ / shares | [1] |  |  |  |  |  |  |  |  | $ 1.74 |  | $ 0.35 |  | $ 0.06 |  |  |  |  |  |
Exchangeable shares issued as a result of special distribution | shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,100,000 | 8,100,000 | 17,900,000 |  | 46,300,000
Exchange ratio |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 | 1
Issuance of BIPC exchangeable shares |  |  |  |  |  | $ 134,000,000 | $ 502,000,000 |  | $ 1,140,000,000 |  |  | $ 0 | [2],[3] |  |  |  |  |  |  |
Unit issuance |  |  |  |  |  |  |  |  |  | $ 2,974,000,000 | [4] | $ 9,000,000 | [3] | $ 809,000,000 |  |  |  |  |  |
BIP Bermuda Holdings I Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Partnership Units [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from issue of subordinated liabilities |  |  | $ 300,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Annual rate |  |  | 5.125% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Unitholders Capital |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Partnership Units [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issued for cash (in shares) | shares |  |  |  |  |  |  |  |  |  | 8,000,000.0 |  | 8,000,000.0 |  | 0 |  |  |  |  |  |
Repurchased and cancelled |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,000,000 |  |  |  |  |  |
Unit issuance |  |  |  |  |  |  |  |  |  | $ 194,000,000 |  | $ 195,000,000 |  | $ 0 |  |  |  |  |  |
Repurchased and cancelled (in shares) | shares |  |  |  |  |  |  |  |  |  | 10,000,000.0 |  | 0 |  | 0 |  |  |  |  |  |
Repurchased and cancelled |  |  |  |  |  |  |  |  |  | $ (186,000,000) |  | $ 0 |  | $ (1,000,000) |  |  |  |  |  |
Preferred Unitholders Capital | Series 7 Preferred Units |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Partnership Units [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issued for cash (in shares) | shares |  | 12,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares issued, price per share (usd per share) | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 25 |  |  |  |  |
Preferred Unitholders Capital | Series 5 Preferred Units |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Partnership Units [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Losses on redemption |  |  |  |  |  |  |  |  |  | 20,000,000 |  |  |  |  |  |  |  |  |  |
Repurchased and cancelled (in shares) | shares |  |  |  |  |  |  |  |  |  |  |  | 0 |  | 100,000 |  |  |  |  |  |
Repurchased and cancelled |  |  |  |  |  |  |  |  |  | (206,000,000) |  |  |  | $ (1,000,000) |  |  |  |  |  |
Preferred Unitholders Capital | Series 14 Preferred Units |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Partnership Units [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issued for cash (in shares) | shares |  |  |  | 8,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares issued, price per share (usd per share) | $ / shares |  |  |  | $ 25 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Partnership units issued, net of costs and repurchases |  |  |  | $ 200,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Quarterly fixed distribution rate |  |  |  | 5.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Underwriting related cost |  |  |  | $ 6,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Unitholders Capital | Series 13 Preferred Units |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Partnership Units [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issued for cash (in shares) | shares |  |  |  |  | 8,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares issued, price per share (usd per share) | $ / shares |  |  |  |  | $ 25 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Partnership units issued, net of costs and repurchases |  |  |  |  | $ 200,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Quarterly fixed distribution rate |  |  |  |  | 5.125% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Underwriting related cost |  |  |  |  | $ 5,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Special General Partner |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Partnership Units [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Partnership distributions |  |  |  |  |  |  |  |  |  | $ 206,000,000 |  | $ 183,000,000 |  | $ 158,000,000 |  |  |  |  |  |
Special General Partner | Partners' capital |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Partnership Units [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issued for cash (in shares) | shares |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  |  |  |  |  |
Repurchased and cancelled (in shares) | shares |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  |  |  |  |  |
Repurchased and cancelled |  |  |  |  |  |  |  |  |  | $ 0 |  | $ 0 |  | $ 0 |  |  |  |  |  |
Weighted average number of shares outstanding | shares |  |  |  |  |  |  |  |  |  | 1,600,000 |  | 1,600,000 |  | 1,600,000 |  |  |  |  |  |
Unit issuance |  |  |  |  |  |  |  |  |  | $ 0 |  | $ 0 |  | $ 0 |  |  |  |  |  |
Non-controlling Interest - Redeemable Partnership Units |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Partnership Units [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase in equity |  |  |  |  |  |  |  | $ 8,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Issuance of BIPC exchangeable shares | [2],[3] |  |  |  |  |  |  |  |  |  |  | $ (183,000,000) |  |  |  |  |  |  |  |
Unit issuance |  |  |  |  |  |  |  |  |  | $ 400,000,000 | [4] |  |  | $ 250,000,000 |  |  |  |  |  |
Non-controlling Interest - Redeemable Partnership Units | Partners' capital |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Partnership Units [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issued for cash (in shares) | shares |  |  |  |  |  | 7,100,000 |  | 6,100,000 |  |  |  | 0 |  | 6,100,000 |  |  |  |  |  |
Partnership units issued, net of costs and repurchases |  |  |  |  |  |  |  | $ 250,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Weighted average number of shares outstanding | shares |  |  |  |  |  |  |  |  |  | 122,800,000 |  | 121,900,000 |  | 118,600,000 |  |  |  |  |  |
Unit issuance |  |  |  |  |  | $ 400,000,000 |  |  |  | $ 400,000,000 | [4] | $ 0 |  | $ 250,000,000 |  |  |  |  |  |
Non-controlling Interest - Redeemable Partnership Units | Partners' capital | Holding LP |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Partnership Units [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares issued (in shares) | shares |  |  |  |  |  |  |  |  |  | 129,000,000 |  |  |  |  |  |  |  |  |  |
Limited Partners |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Partnership Units [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repurchased and cancelled |  |  |  |  |  |  |  |  |  |  |  |  |  | 28,000,000 |  |  |  |  |  |
Issuance of BIPC exchangeable shares | [2],[3] |  |  |  |  |  |  |  |  |  |  | (441,000,000) |  |  |  |  |  |  |  |
Unit issuance |  |  |  |  |  |  |  |  |  | $ 545,000,000 | [4] | $ 9,000,000 | [3] | $ 559,000,000 |  |  |  |  |  |
Limited Partners | Partners' capital |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Partnership Units [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issued for cash (in shares) | shares |  |  |  |  |  | 9,500,000 |  | 13,500,000 |  | 9,700,000 |  | 200,000 |  | 13,800,000 |  |  |  |  |  |
Shares issued, price per share (usd per share) | $ / shares |  |  |  |  |  |  |  | $ 42.50 |  |  |  |  |  |  |  | $ 58.65 |  |  |  |
Partnership units issued, net of costs and repurchases |  |  |  |  |  | $ 556,000,000 |  | $ 575,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Share issue related cost |  |  |  |  |  | $ 23,000,000 |  | $ 24,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Repurchased and cancelled (in shares) | shares |  |  |  |  |  |  |  |  |  | 0 |  | 100,000 |  | 800,000 |  |  |  |  |  |
Repurchased and cancelled |  |  |  |  |  |  |  |  |  | $ 0 |  | $ 100,000 |  | $ 28,000,000 |  |  |  |  |  |
Share repurchase related cost |  |  |  |  |  |  |  |  |  | $ 0 |  | $ 1,000,000 |  | $ 1,000,000 |  |  |  |  |  |
Dividend reinvestment plan, unit issued (in shares) | shares |  |  |  |  |  |  |  |  |  | 200,000 |  | 1,000,000 |  | 1,000,000 |  |  |  |  |  |
Dividend reinvestment plan, proceeds |  |  |  |  |  |  |  |  |  | $ 12,000,000 |  | $ 9,000,000 |  | $ 8,000,000 |  |  |  |  |  |
Weighted average number of shares outstanding | shares |  |  |  |  |  |  |  |  |  | 296,700,000 |  | 294,700,000 |  | 285,600,000 |  |  |  |  |  |
Unit issuance |  |  |  |  |  |  |  |  |  | $ 545,000,000 | [4] | $ 9,000,000 | [3] | $ 559,000,000 |  |  |  |  |  |
Non-controlling Interest - Exchange LP Units, equity | Partners' capital |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Partnership Units [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
BIPC exchangeable LP converted to BIPC exchangeable (in shares) | $ / shares |  |  |  |  |  |  |  |  |  | $ 400,000 |  | $ 0 |  | $ 0 |  |  |  |  |  |
Issued for cash (in shares) | shares |  |  |  |  |  |  |  |  |  | 0 |  | 100,000 |  | 0 |  |  |  |  |  |
Unit issuance |  |  |  |  |  |  |  |  |  | $ 259,000,000 |  | $ 0 |  | $ 0 |  |  |  |  |  |
Exchange LP conversion (in shares) | shares |  |  |  |  |  |  |  |  |  | 100,000 |  | 300,000 |  | 3,200,000 |  |  |  |  |  |
Exchange LP unit conversion, value |  |  |  |  |  |  |  |  |  | $ 2,000,000 |  | $ 3,000,000 |  | $ 53,000,000 |  |  |  |  |  |
Non-controlling interest— BIPC exchangeable shares | Partners' capital |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Partnership Units [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issued for cash (in shares) | shares |  |  |  |  |  |  |  |  |  | 2,100,000 |  | 0 |  | 0 |  |  |  |  |  |
Units converted to Class A shares of BIPC (in shares) | shares |  |  |  |  |  |  |  |  |  | 100,000 |  | 1,400,000 |  | 0 |  |  |  |  |  |
Units converted to exchangeable shares, value |  |  |  |  |  |  |  |  |  | $ (1,000,000) |  | $ (19,000,000) |  | $ 0 |  |  |  |  |  |
Unit issuance |  |  |  |  |  |  |  |  |  | $ 1,770,000,000 |  | $ 0 |  | $ 0 |  |  |  |  |  |
Incentive Distribution, $0.1827 Threshold | Special General Partner | Holding LP | Holding LP’s units (other than Holding LP Class A Preferred Units) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Partnership Units [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distributions threshold, per quarter, per share | $ / shares |  |  |  |  |  |  |  |  |  | $ 0.1827 |  |  |  |  |  |  |  |  |  |
Distribution rights entitle as percent, threshold |  |  |  |  |  |  |  |  |  | 15.00% |  |  |  |  |  |  |  |  |  |
Incentive Distribution, $0.198 Threshold | Special General Partner | Holding LP | Holding LP’s units (other than Holding LP Class A Preferred Units) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Partnership Units [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distributions threshold, per quarter, per share | $ / shares |  |  |  |  |  |  |  |  |  | $ 0.198 |  |  |  |  |  |  |  |  |  |
Distribution rights entitle as percent, threshold |  |  |  |  |  |  |  |  |  | 25.00% |  |  |  |  |  |  |  |  |  |
Incentive Distribution, $0.203 Threshold | Special General Partner | Holding LP | Holding LP’s units (other than Holding LP Class A Preferred Units) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Partnership Units [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distributions threshold, per quarter, per share | $ / shares |  |  |  |  |  |  |  |  |  |  |  | $ 0.203 |  |  |  |  |  |  |  |
Incentive Distribution, $0.22 Threshold | Special General Partner | Holding LP | Holding LP’s units (other than Holding LP Class A Preferred Units) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Partnership Units [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distributions threshold, per quarter, per share | $ / shares |  |  |  |  |  |  |  |  |  |  |  | $ 0.22 |  |  |  |  |  |  |  |
[1] | Basic and diluted income per limited partner unit for the years ended December 31, 2020, and 2019 have been restated to reflect the impact of the special distribution on March 31, 2020. Refer to Note 1, Organization and Description of the Business, for further details.
[2] | Refer to Note 1, Organization and Description of the Business.
[3] | Refer to Note 27, Partnership Capital.
[4] | Refer to Note 27, Partnership Capital.

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- Definition Share Repurchase Related Cost + References No definition available. + Details
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- Definition Shares Issued During Period, Price Per Share + References No definition available. + Details
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- Definition Share underwriting related cost + References No definition available. + Details
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- Definition Stock Issued During Period, Shares, Dividend Reinvestment Plan1 + References No definition available. + Details
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- Definition Units Converted To Exchangeable Shares + References No definition available. + Details
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- Definition Units Converted to Exchangeable Shares, Value + References No definition available. + Details
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- Definition Volume Weighted Average Of Trading Price, Number Of Trading Days + References No definition available. + Details
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- Definition The amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator) divided by the weighted average number of ordinary shares outstanding during the period (the denominator). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2021-01-01 -Paragraph 66 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=33&code=ifrs-tx-2021-en-r&anchor=para_66&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2021-01-01 -Paragraph 67 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=33&code=ifrs-tx-2021-en-r&anchor=para_67&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The interest rate on borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph 7 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_7&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The increase (decrease) in equity. [Refer: Equity] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 106 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_106_d&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator), divided by the weighted average number of ordinary shares outstanding during the period (the denominator), both adjusted for the effects of all dilutive potential ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2021-01-01 -Paragraph 66 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=33&code=ifrs-tx-2021-en-r&anchor=para_66&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2021-01-01 -Paragraph 67 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=33&code=ifrs-tx-2021-en-r&anchor=para_67&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The increase in equity through the issue of equity instruments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 106 -Subparagraph d -Clause iii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_106_d_iii&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The number of shares issued by the entity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 106 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_106_d&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The cash inflow from the issuing of subordinated liabilities. [Refer: Subordinated liabilities] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 7 -IssueDate 2021-01-01 -Paragraph 17 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2021-en-r&anchor=para_17&doctype=Standard -URIDate 2021-03-24 + Details
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