A sheet handling apparatus comprising: a transport unit (30, 50) which is provided with a transport path (30a, 50a) including a first transport path and a second transport path connected to the first transport path, wherein the transport unit (30, 50) is configured to transport a sheet in a transport direction of the transport path (30a, 50a) from the first transport path to the second transport path; a pair of first guiding members (36, 38) provided at both edges of the first transport path, wherein the first guiding members (36, 38) are configured to move away from each other and approach each other along a width direction of the first transport path, wherein the sheet handling apparatus further comprising: a pair of second guiding members (56, 58) provided at both edges of the second transport path, wherein the second guiding members (56, 58) are configured to move away from each other and approach each other along a width direction of the second transport path, a first driving unit (36m, 38m) configured to move the first guiding members (36, 38) along the width direction of the first transport path and a second driving unit (56m, 58m) configured to move the second guiding members (56, 58) along the width direction of the second transport path, a first sheet detection unit provided near an inlet of the first transport path, and a second sheet detection unit provided near an inlet of the second transport path, wherein when the first sheet detection unit detects a sheet, the driving unit (36m, 38m, 56m, 58m) moves the first guiding members (36, 38) away from each other along the width direction of the first transport path and the second guiding members (56, 58) away from each other along the width direction of the second transport path such that the width of the second transport path is greater than the width of the first transport path, wherein the first driving unit (36m, 38m) is configured to move the first guiding members (36, 38) by the same movement amount and the second driving unit (56m, 58m) is configured to move the second guiding members (56, 58) by the same movement amount. a transport unit (30, 50) which is provided with a transport path (30a, 50a) including a first transport path and a second transport path connected to the first transport path, wherein the transport unit (30, 50) is configured to transport a sheet in a transport direction of the transport path (30a, 50a) from the first transport path to the second transport path; a pair of first guiding members (36, 38) provided at both edges of the first transport path, wherein the first guiding members (36, 38) are configured to move away from each other and approach each other along a width direction of the first transport path, wherein the sheet handling apparatus further comprising: a pair of second guiding members (56, 58) provided at both edges of the second transport path, wherein the second guiding members (56, 58) are configured to move away from each other and approach each other along a width direction of the second transport path, a first driving unit (36m, 38m) configured to move the first guiding members (36, 38) along the width direction of the first transport path and a second driving unit (56m, 58m) configured to move the second guiding members (56, 58) along the width direction of the second transport path, a first sheet detection unit provided near an inlet of the first transport path, and a second sheet detection unit provided near an inlet of the second transport path, wherein when the first sheet detection unit detects a sheet, the driving unit (36m, 38m, 56m, 58m) moves the first guiding members (36, 38) away from each other along the width direction of the first transport path and the second guiding members (56, 58) away from each other along the width direction of the second transport path such that the width of the second transport path is greater than the width of the first transport path, wherein the first driving unit (36m, 38m) is configured to move the first guiding members (36, 38) by the same movement amount and the second driving unit (56m, 58m) is configured to move the second guiding members (56, 58) by the same movement amount. a pair of second guiding members (56, 58) provided at both edges of the second transport path, wherein the second guiding members (56, 58) are configured to move away from each other and approach each other along a width direction of the second transport path, a first driving unit (36m, 38m) configured to move the first guiding members (36, 38) along the width direction of the first transport path and a second driving unit (56m, 58m) configured to move the second guiding members (56, 58) along the width direction of the second transport path, a first sheet detection unit provided near an inlet of the first transport path, and a second sheet detection unit provided near an inlet of the second transport path, wherein when the first sheet detection unit detects a sheet, the driving unit (36m, 38m, 56m, 58m) moves the first guiding members (36, 38) away from each other along the width direction of the first transport path and the second guiding members (56, 58) away from each other along the width direction of the second transport path such that the width of the second transport path is greater than the width of the first transport path, wherein the first driving unit (36m, 38m) is configured to move the first guiding members (36, 38) by the same movement amount and the second driving unit (56m, 58m) is configured to move the second guiding members (56, 58) by the same movement amount.