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Segment Information Narrative (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 USD ($) segment | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($)
Segment Reporting Information |  |  |
Home sale revenues | $ 8,323,984 | $ 7,451,315 | $ 5,792,675
Number of reportable segments | segment | 6 |  |
Detached single-family homes [Member] |  |  |
Segment Reporting Information |  |  |
Home sale revenues | $ 7,300,000 | 6,500,000 | 5,000,000
Attached homes [Member] |  |  |
Segment Reporting Information |  |  |
Home sale revenues | $ 1,068,000 | $ 996,400 | $ 841,500

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- Definition Revenue related to the sale of homes and home building activities including design, development, general contracting, and renovation services for residential buildings, including single-family houses, multifamily housing, townhouses, apartments, and modular housing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(e)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
Name: | us-gaap_HomeBuildingRevenue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
Name: | us-gaap_ProductOrServiceAxis=phm_DetachedSingleFamilyHomesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_ProductOrServiceAxis=phm_AttachedHomesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |