XML 83 R42.htm IDEA: XBRL DOCUMENT
v3.21.1

Stock-Based Compensation (Tables) | 12 Months Ended
--- | ---
Mar. 31, 2021
Share-based Payment Arrangement [Abstract] |
Schedule of Stock-Based Compensation Expense | Total stock-based compensation expense consists of the following:
| Years Ended 31 March
(Millions of US dollars) | 2021 |  | 2020 |  | 2019
Liability Awards | $ | 21.7 |  |  | $ | 2.8 |  |  | $ | (0.6) |
Equity Awards | 18.0 |  |  | 10.3 |  |  | 12.5 |
Total stock-based compensation expense | $ | 39.7 |  |  | $ | 13.1 |  |  | $ | 11.9 |
Summary of Stock Options Available for Grant | The following table summarizes the Company’s shares available for grant as options, RSUs or other equity instruments under the LTIP and 2001 Plan:
| Shares Available for Grant
Balance at 31 March 2019 | 23,744,816 |
Granted | (800,437) |
Balance at 31 March 2020 | 22,944,379 |
Granted | (856,756) |
Balance at 31 March 2021 | 22,087,623 |
Restricted Stock Unit Activity | The following table summarizes the Company’s RSU activity:
(Units) | Service Vesting (2001 Plan) |  | Performance Vesting (LTIP) |  | Market Conditions (LTIP) |  | Total |  | Weighted Average Fair Value at Grant Date (A$)
Outstanding at 31 March 2019 | 910,386 |  |  | 1,148,022 |  |  | 2,203,100 |  |  | 4,261,508 |  |  | 14.47 |
Granted | 24,006 |  |  | 273,258 |  |  | 503,173 |  |  | 800,437 |  |  | 18.08 |
Vested | (304,591) |  |  | (207,271) |  |  | (362,973) |  |  | (874,835) |  |  | 16.21 |
Forfeited | (109,169) |  |  | (349,844) |  |  | (565,660) |  |  | (1,024,673) |  |  | 15.21 |
Outstanding at 31 March 2020 | 520,632 |  |  | 864,165 |  |  | 1,777,640 |  |  | 3,162,437 |  |  | 14.64 |
Granted | 371,806 |  |  | 190,376 |  |  | 294,574 |  |  | 856,756 |  |  | 26.56 |
Vested | (245,385) |  |  | (174,356) |  |  | (722,156) |  |  | (1,141,897) |  |  | 13.03 |
Forfeited | (53,567) |  |  | (153,897) |  |  | (63,136) |  |  | (270,600) |  |  | 17.05 |
Outstanding at 31 March 2021 | 593,486 |  |  | 726,288 |  |  | 1,286,922 |  |  | 2,606,696 |  |  | 19.01 |
Assumptions Used for Restricted Stock Grants | The following table includes the assumptions used for RSU grants (market condition) valued:
Vesting Condition: | Market |  | Market |  | Market |  | Market |  | Market
| FY21 |  | FY21 |  | FY20 |  | FY20 |  | FY20
Date of grant 1 | 15 Sep 2020 |  | 5 Nov 2020 |  | 25 Feb 2020 |  | 20 Sep 2019 |  | 9 Aug 2019
Dividend yield (per annum) | — | % |  | 1.3 | % |  | 2.9 | % |  | 3.1 | % |  | 3.1 | %
Expected volatility | 39.2 | % |  | 40.1 | % |  | 26.6 | % |  | 26.6 | % |  | 27.8 | %
Risk free interest rate | 0.2 | % |  | 0.2 | % |  | 1.2 | % |  | 1.6 | % |  | 1.6 | %
Expected life in years | 2.9 |  | 2.8 |  | 2.5 |  | 2.9 |  | 2.0
JHX stock price at grant date (A$) | 30.33 |  | 37.24 |  | 29.54 |  | 24.69 |  | 21.68
Number of restricted stock units | 167,491 |  | 127,083 |  | 6,676 |  | 477,979 |  | 18,518
Cash Settled Units Activity | The following represents the activity related to the CSUs:
|  | FY21 |  | FY20
Granted |  | 571,132 |  |  | 791,217 |
Vested |  | 377,506 |  |  | 129,549 |
Cancelled |  | 607,253 |  |  | 328,935 |

X
- Definition Tabular disclosure of the assumptions used to determine the fair value of restricted stock grants, including but not limited to expected volatility, dividend yield, risk free interest rate and the expected life. + References No definition available. + Details
Name: | jhx_ScheduleOfAssumptionsUsedToCalculateFairValueOfRestrictedStockUnitTableTableTextBlock
Namespace Prefix: | jhx_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_DisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901 + Details
Name: | us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of activity for award under share-based payment arrangement. Includes, but is not limited to, outstanding award at beginning and end of year, granted, exercised, forfeited, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
Name: | us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration