Implement PIVOT Table in Oracle 11g

Hi! My below script working I got result.

Now I want get result like below example. I am using oracle 11g.

SQL

WITH cte_month AS
(SELECT row_number() OVER(PARTITION BY to_char(r.balance_date, 'Month'), to_char(r.balance_date, 'Year') ORDER BY balance_date DESC) row_num,
arrears_in_days,
balance_date
FROM history r
where r.acct_id in ('1100', '1101')
and (to_char(r.balance_date, 'D')) not in (6, 7))
SELECT arrears_in_days, balance_date
FROM cte_month
WHERE row_num = 1
order by balance_date;

Now I want get result like below example. I using oracle 11g.