Cash paid for interest during the years ended December 31, 2018, 2017 and 2016, was $49 million, $42 million and $37 million, respectively. Cash paid for income taxes during the year ended December 31, 2018 and 2017 was $153 million and $57 million, respectively. Prior to 2017, we were part of Hilton’s consolidated income tax return.

The following non-cash activities were excluded from the consolidated statements of cash flows:

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In 2018, we recorded a cumulative non-cash adjustment of $38 million related to the adoption of ASC 606. See Note 3: Revenue from Contracts with Customers for more information.

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In 2018, we recorded a $3 million non-cash operating activity transfer from Property and Equipment, net to Inventory.

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In 2018, we recorded a $3 million non-cash financing activity adjustment to equity related to the write-off of expenses due to Hilton prior to the spin-off

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In 2017, we recorded a $40 million non-cash operating activity transfer from Property and Equipment, net to Inventory.

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In 2016, Hilton transferred to us $72 million of net inventory and $138 million of net Property and Equipment, net for conversion into timeshare units.

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In 2016, we had $300 million of a non-cash financing activity related to the issuance of our Senior Unsecured Notes and $8 million of related non-cash deferred financing costs.