James Hardie Industries plc Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Accumulated Other Comprehensive Loss (Details)

Accumulated Other Comprehensive Loss (Details) $ in Millions	12 Months Ended
	Mar. 31, 2021 USD ($)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 1,035.3
Other comprehensive (loss) gain	55.5
Ending balance	1,060.8
Accumulated Other Comprehensive Loss
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(62.1)
Ending balance	(6.6)
Cash Flow Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	0.2
Other comprehensive (loss) gain	0.0
Ending balance	0.2
Pension Actuarial Gain
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	0.8
Other comprehensive (loss) gain	(0.4)
Ending balance	0.4
Foreign Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(63.1)
Other comprehensive (loss) gain	55.9
Ending balance	$ (7.2)

- Definition

Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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