XML 159 R120.htm IDEA: XBRL DOCUMENT  v2.3.0.11
Composition of Short Term Debt and Weighted Average Contract Interest Rate on Short Term Debt (Detail)
In Millions, unless otherwise specified
Mar. 31, 2011
USD ($)
Mar. 31, 2011
JPY (¥)
Mar. 31, 2010
JPY (¥)
Mar. 31, 2011
Japan
Bank Borrowings
USD ($)
Mar. 31, 2011
Japan
Bank Borrowings
JPY (¥)
Mar. 31, 2010
Japan
Bank Borrowings
JPY (¥)
Mar. 31, 2011
Japan
Commercial Paper
USD ($)
Mar. 31, 2011
Japan
Commercial Paper
JPY (¥)
Mar. 31, 2010
Japan
Commercial Paper
JPY (¥)
Mar. 31, 2010
Japan
Medium-term Notes
JPY (¥)
Mar. 31, 2011
Overseas
Bank Borrowings
USD ($)
Mar. 31, 2011
Overseas
Bank Borrowings
JPY (¥)
Mar. 31, 2010
Overseas
Bank Borrowings
JPY (¥)
Short-term Debt [Line Items]                          
Short-Term Debt $ 5,756 ¥ 478,633 ¥ 573,565 $ 2,342 ¥ 194,728 ¥ 158,469 $ 2,174 ¥ 180,798 ¥ 282,781 ¥ 19,550 $ 1,240 ¥ 103,107 ¥ 112,765
Weighted average rate 1.30% 1.30% 1.20% 1.30% 1.30% 1.60% 0.20% 0.20% 0.30% 1.70% 3.10% 3.10% 2.60%