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Right-of-use assets and Lease liabilities | 12 Months Ended
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Dec. 31, 2020
Leases [Abstract] |
Right-of-use assets and Lease liabilities | Right-of-use assets and Lease liabilities Right-of-use assets Right-of-use assets as of December 31, 2020 and 2019 were comprised of the following:
($ millions) | 2020 | 2019
Land | 20 |  | 20 |
Buildings | 310 |  | 277 |
Machinery & equipment and other assets | 28 |  | 27 |
Total right-of-use assets | 358 |  | 324 |
Depreciation charges of $79 million and $66 million for the years ended December 31, 2020 and 2019, respectively, are shown in the table below by underlying class of asset:
($ millions) | 2020 | 2019
Land | 1 |  | 1 |
Buildings | 59 |  | 47 |
Machinery & equipment and other assets | 19 |  | 18 |
Total | 79 |  | 66 |
Additions to right-of-use assets amounted to $107 million and $116 million for the years ended December 31, 2020 and 2019, respectively. Lease liabilities Lease liabilities totaled $385 million as of December 31, 2020, including $70 million in current lease liabilities and $315 million in non-current lease liabilities. The contractual maturities of the undiscounted lease liabilities as of December 31, 2020 and December 31, 2019, are as follows:
| Lease liabilities undiscounted
($ millions) | 2020 | 2019
Not later than one year | 82 | 73
Between one and five years | 203 |  | 176 |
Later than five years | 203 |  | 200 |
Total lease liabilities undiscounted | 488 |  | 449 |
| Lease liabilities
($ millions) | 2020 | 2019
Not later than one year | 70 | 61
Between one and five years | 168 |  | 140 |
Later than five years | 147 |  | 140 |
Total lease liabilities | 385 |  | 341 |
Additional disclosures The following table provides additional disclosures related to right-of-use assets and lease liabilities:
($ millions) | 2020 | 2019
Interest expense on lease liabilities | 13 |  | 11 |
Expense on short-term, low value and variable leases | 4 |  | 3 |
Total cash outflows for leases | 85 |  | 59 |
Thereof: |  |
Lease liability payments(1) | 69 |  | 52 |
Interest payments(2) | 12 |  | 5 |
Short-term and low value lease payments(2) | 4 |  | 2 |
(1) Reported as cash outflows from financing activities net of lease incentives received (2) Included within total net cash flows from operating activities

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- Definition Leases [Abstract] + References No definition available. + Details
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- Definition The entire disclosure for leases. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2020-01-01 -Section Presentation -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2020-en-r&doctype=Standard&dita_xref=IFRS16_g47-50_TI -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2020-01-01 -Section Disclosure -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2020-en-r&doctype=Standard&dita_xref=IFRS16_g51-60_TI -URIDate 2020-01-01 + Details
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