Subsequent Events	9 Months Ended
Dec. 31, 2016
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events New Secured Term Loan and Revolving Credit Facility On February 3, 2017, we entered into a new credit agreement for $6.0 billion, consisting of a $4.0 billion, seven-year secured term loan that matures in February 2024 and a $2.0 billion secured revolving bank credit facility that expires in February 2021. The term loan has an interest rate equal to LIBOR plus 250 basis points and the bank facility has an interest rate equal to LIBOR plus a spread that varies depending on the Company's leverage ratio. The new credit facility replaced the $3.3 billion unsecured revolving bank credit facility that was due to expire in February 2018. Insurance Program Master Services Agreement Effective January 1, 2017, we entered into a new Master Services Agreement with a vendor to provide post-sale device support services (including device insurance) to subscribers. Under the new agreement, the vendor will be the primary obligor and bear the risk of loss with regards to claims and related costs. As a result, revenue will be accounted for and presented on a net basis, whereas historically the amounts were presented on a gross basis. Sprint will remit premiums to the vendor who will pay Sprint a monthly recurring commission per subscriber for the duration of the agreement. Accounts Receivable Facility On February 3, 2017, the Company executed certain amendments to the Receivables Facility. The maturity date was extended to November 2018 and Sprint obtained the right to repurchase, under certain conditions, the financial assets transferred to the conduits. As a result of adding the repurchase feature, Sprint gained effective control over the financial assets. Accordingly, all sales of wireless service and installment receivables to the conduits will be reflected as financings. All cash inflows and outflows under the Receivables Facility will be reported as financing activities in the consolidated statements of cash flows prospectively.

Subsequent Events

New Secured Term Loan and Revolving Credit Facility

On February 3, 2017, we entered into a new credit agreement for $6.0 billion, consisting of a $4.0 billion, seven-year secured term loan that matures in February 2024 and a $2.0 billion secured revolving bank credit facility that expires in February 2021. The term loan has an interest rate equal to LIBOR plus 250 basis points and the bank facility has an interest rate equal to LIBOR plus a spread that varies depending on the Company's leverage ratio. The new credit facility replaced the $3.3 billion unsecured revolving bank credit facility that was due to expire in February 2018.

Insurance Program Master Services Agreement

Effective January 1, 2017, we entered into a new Master Services Agreement with a vendor to provide post-sale device support services (including device insurance) to subscribers. Under the new agreement, the vendor will be the primary obligor and bear the risk of loss with regards to claims and related costs. As a result, revenue will be accounted for and presented on a net basis, whereas historically the amounts were presented on a gross basis. Sprint will remit premiums to the vendor who will pay Sprint a monthly recurring commission per subscriber for the duration of the agreement.

Accounts Receivable Facility

On February 3, 2017, the Company executed certain amendments to the Receivables Facility. The maturity date was extended to November 2018 and Sprint obtained the right to repurchase, under certain conditions, the financial assets transferred to the conduits. As a result of adding the repurchase feature, Sprint gained effective control over the financial assets. Accordingly, all sales of wireless service and installment receivables to the conduits will be reflected as financings. All cash inflows and outflows under the Receivables Facility will be reported as financing activities in the consolidated statements of cash flows prospectively.