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Commitments and Contingencies Increase (Decrease) in Liability for Claims and Claims Adjustment Expense Reserve (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Increase (Decrease) in Liability for Claims and Claims Adjustment Expense Reserve [Abstract]
Adjustments to previously recorded reserves	$ 1,300	$ (3,875)

X

- Definition

Increase (Decrease) in Liability for Claims and Claims Adjustment Expense Reserve [Abstract]

+ References

No definition available.

+ Details

Name:	phm_IncreaseDecreaseinLiabilityforClaimsandClaimsAdjustmentExpenseReserveAbstract
Namespace Prefix:	phm_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of increase (decrease) in liability to reflect the estimated ultimate cost of settling claims relating to insured events that have occurred on or before the balance sheet date, whether or not reported to the insurer at that date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585

+ Details

Name:	us-gaap_IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration