Condensed Financial Information (Parent Company) (Investment in Subsidiaries - Narrative) (Details) $ in Billions	Aug. 03, 2017 USD ($)
Condensed Financial Statements, Captions [Line Items]
Dividends Paid To Registrant's Parent Company By Affiliates	$ 1.8

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.

No definition available.

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