Segment Information (Segmented Information By Business Unit) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Segment Reporting Information [Line Items]
Segment revenues	$ 569,728	$ 471,820
Direct operating expenses	306,445	245,818
Distribution and marketing	171,460	178,709
Segment contribution before general and administration expenses	91,823	47,293
General and administration	19,432	19,548
Segment profit	72,391	27,745
Acquisition of investment in films and television programs	160,933	161,005
Motion Pictures [Member]
Segment Reporting Information [Line Items]
Segment revenues	438,646	406,534
Direct operating expenses	203,450	193,682
Distribution and marketing	165,100	172,900
Segment contribution before general and administration expenses	70,096	39,952
General and administration	16,425	16,835
Segment profit	53,671	23,117
Acquisition of investment in films and television programs	122,239	81,051
Television Production [Member]
Segment Reporting Information [Line Items]
Segment revenues	131,082	65,286
Direct operating expenses	102,995	52,136
Distribution and marketing	6,360	5,809
Segment contribution before general and administration expenses	21,727	7,341
General and administration	3,007	2,713
Segment profit	18,720	4,628
Acquisition of investment in films and television programs	$ 38,694	$ 79,954