XML 17 R69.htm IDEA: XBRL DOCUMENT
v3.20.1

Transfers Of Financial Assets (Schedule Of Gross And Net Receivables Transferred As Well As Short-Term Borrowings Related To The Securitization Transactions) (Details) - USD ($) $ in Millions | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Gross Receivables | $ 593.2 | $ 569.1
Less: Receivables not transferred | 133.8 | 215.9
Net receivables transferred | 459.4 | 353.2
Accounts receivable securitization facility borrowings | $ 459.4 | $ 353.2

X
- Definition Trade receivables available for transfer + References No definition available. + Details
Name: | nix_TradeReceivablesAvailableForTransfer
Namespace Prefix: | nix_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Trade receivables not transferred + References No definition available. + Details
Name: | nix_TradeReceivablesNotTransferred
Namespace Prefix: | nix_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Trade receivables transferred, net + References No definition available. + Details
Name: | nix_TradeReceivablesTransferredNet
Namespace Prefix: | nix_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Carrying amount of liabilities associated with financial assets accounted for as secured borrowings recognized in the transferor's statement of financial position at the end of each period presented. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 50 -Paragraph 1A -Subparagraph (b)(1)(ii) -URI http://asc.fasb.org/extlink&oid=109249958&loc=SL6224234-111729 + Details
Name: | us-gaap_TransfersAccountedForAsSecuredBorrowingsAssociatedLiabilitiesCarryingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant