sentences:  An $858 million capital campaign funded the 2002–04 expansion, with David Rockefeller donating $77 million in cash.In 2005, Rockefeller pledged an additional $100 million toward the museum's endowment.In 2011, Moody's Investors Service, a bond rating agency, rated $57 million worth of new debt in 2010 with a positive outlook and echoed their Aa2 bond credit rating for the underlying institution.