pre_text: (6) INTANGIBLE ASSETS Identifiable intangible assets as of June 30, 2019 and 2018 were as follows: The weighted average remaining amortization period for the Company’s customer relationships asset is 14.3 years. The Company has determined that certain underlying rights (including easements) and the certifications have indefinite lives. The amortization period for underlying rights (including easements) is 13.0 years. The amortization of intangible assets for the years ended June 30, 2019, 2018 and 2017 was $95.1 million, $97.2 million, and $80.0 million, respectively.
table: Gross Carrying Amount Accumulated Amortization Net
table: (in millions)
table: June 30, 2019
table: Finite-Lived Intangible Assets
table: Customer relationships $1,597.6 $(498.7) $1,098.9
table: Underlying rights and other 3.4 (1.5) 1.9
table: Total 1,601.0 (500.2) 1,100.8
table: Indefinite-Lived Intangible Assets
table: Certifications 3.5 — 3.5
table: Underlying rights and other 14.5 — 14.5
table: Total 1,619.0 (500.2) 1,118.8
table: June 30, 2018
table: Finite-Lived Intangible Assets
table: Customer relationships $1,597.0 $(405.6) $1,191.4
table: Underlying rights and other 2.7 (0.6) 2.1
table: Total 1,599.7 (406.2) 1,193.5
table: Indefinite-Lived Intangible Assets
table: Certifications 3.5 — 3.5
table: Underlying rights and other 15.1 — 15.1
table: Total $1,618.3 $(406.2) $1,212.1
question: Analyse this data from a financial earnings document. What is the net total underlying rights and other for both finite-lived and indefinite-lived intangible assets as of June 30, 2019?